mirror of
git://git.proxmox.com/git/pve-storage.git
synced 2024-12-23 17:34:34 +03:00
934 lines
23 KiB
Perl
934 lines
23 KiB
Perl
package PVE::Diskmanage;
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use strict;
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use warnings;
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use PVE::ProcFSTools;
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use Data::Dumper;
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use Cwd qw(abs_path);
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use Fcntl ':mode';
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use File::Basename;
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use File::stat;
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use JSON;
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use PVE::Tools qw(extract_param run_command file_get_contents file_read_firstline dir_glob_regex dir_glob_foreach trim);
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my $SMARTCTL = "/usr/sbin/smartctl";
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my $ZPOOL = "/sbin/zpool";
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my $SGDISK = "/sbin/sgdisk";
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my $PVS = "/sbin/pvs";
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my $LVS = "/sbin/lvs";
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my $LSBLK = "/bin/lsblk";
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sub check_bin {
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my ($path) = @_;
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return -x $path;
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}
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sub verify_blockdev_path {
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my ($rel_path) = @_;
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die "missing path" if !$rel_path;
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my $path = abs_path($rel_path);
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die "failed to get absolute path to $rel_path\n" if !$path;
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die "got unusual device path '$path'\n" if $path !~ m|^/dev/(.*)$|;
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$path = "/dev/$1"; # untaint
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assert_blockdev($path);
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return $path;
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}
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sub assert_blockdev {
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my ($dev, $noerr) = @_;
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if ($dev !~ m|^/dev/| || !(-b $dev)) {
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return undef if $noerr;
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die "not a valid block device\n";
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}
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return 1;
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}
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sub init_disk {
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my ($disk, $uuid) = @_;
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assert_blockdev($disk);
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# we should already have checked if it is in use in the api call
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# but we check again for safety
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die "disk $disk is already in use\n" if disk_is_used($disk);
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my $id = $uuid || 'R';
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run_command([$SGDISK, $disk, '-U', $id]);
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return 1;
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}
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sub disk_is_used {
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my ($disk) = @_;
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my $dev = $disk;
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$dev =~ s|^/dev/||;
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my $disklist = get_disks($dev, 1);
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die "'$disk' is not a valid local disk\n" if !defined($disklist->{$dev});
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return 1 if $disklist->{$dev}->{used};
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return 0;
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}
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sub get_smart_data {
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my ($disk, $healthonly) = @_;
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assert_blockdev($disk);
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my $smartdata = {};
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my $type;
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my $returncode = 0;
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if ($disk =~ m!^/dev/(nvme\d+n\d+)$!) {
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my $info = get_sysdir_info("/sys/block/$1");
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$disk = "/dev/".($info->{device}
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or die "failed to get nvme controller device for $disk\n");
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}
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my $cmd = [$SMARTCTL, '-H'];
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push @$cmd, '-A', '-f', 'brief' if !$healthonly;
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push @$cmd, $disk;
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eval {
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$returncode = run_command($cmd, noerr => 1, outfunc => sub{
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my ($line) = @_;
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# ATA SMART attributes, e.g.:
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# ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE
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# 1 Raw_Read_Error_Rate POSR-K 100 100 000 - 0
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#
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# SAS and NVME disks, e.g.:
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# Data Units Written: 5,584,952 [2.85 TB]
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# Accumulated start-stop cycles: 34
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if (defined($type) && $type eq 'ata' && $line =~ m/^([ \d]{2}\d)\s+(\S+)\s+(\S{6})\s+(\d+)\s+(\d+)\s+(\S+)\s+(\S+)\s+(.*)$/) {
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my $entry = {};
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$entry->{name} = $2 if defined $2;
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$entry->{flags} = $3 if defined $3;
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# the +0 makes a number out of the strings
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$entry->{value} = $4+0 if defined $4;
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$entry->{worst} = $5+0 if defined $5;
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# some disks report the default threshold as --- instead of 000
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if (defined($6) && $6 eq '---') {
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$entry->{threshold} = 0;
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} else {
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$entry->{threshold} = $6+0 if defined $6;
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}
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$entry->{fail} = $7 if defined $7;
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$entry->{raw} = $8 if defined $8;
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$entry->{id} = $1 if defined $1;
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push @{$smartdata->{attributes}}, $entry;
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} elsif ($line =~ m/(?:Health Status|self\-assessment test result): (.*)$/ ) {
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$smartdata->{health} = $1;
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} elsif ($line =~ m/Vendor Specific SMART Attributes with Thresholds:/) {
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$type = 'ata';
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delete $smartdata->{text};
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} elsif ($line =~ m/=== START OF (READ )?SMART DATA SECTION ===/) {
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$type = 'text';
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} elsif (defined($type) && $type eq 'text') {
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$smartdata->{text} = '' if !defined $smartdata->{text};
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$smartdata->{text} .= "$line\n";
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# extract wearout from nvme/sas text, allow for decimal values
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if ($line =~ m/Percentage Used(?: endurance indicator)?:\s*(\d+(?:\.\d+)?)\%/i) {
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$smartdata->{wearout} = 100 - $1;
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}
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} elsif ($line =~ m/SMART Disabled/) {
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$smartdata->{health} = "SMART Disabled";
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}
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});
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};
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my $err = $@;
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# bit 0 and 1 mark an severe smartctl error
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# all others are for disk status, so ignore them
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# see smartctl(8)
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if ((defined($returncode) && ($returncode & 0b00000011)) || $err) {
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die "Error getting S.M.A.R.T. data: Exit code: $returncode\n";
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}
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$smartdata->{type} = $type;
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return $smartdata;
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}
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sub get_lsblk_info() {
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my $cmd = [$LSBLK, '--json', '-o', 'path,parttype,fstype'];
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my $output = "";
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my $res = {};
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eval {
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run_command($cmd, outfunc => sub {
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my ($line) = @_;
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$output .= "$line\n";
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});
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};
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warn "$@\n" if $@;
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return $res if $output eq '';
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my $parsed = eval { decode_json($output) };
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warn "$@\n" if $@;
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my $list = $parsed->{blockdevices} // [];
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$res = { map {
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$_->{path} => {
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parttype => $_->{parttype},
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fstype => $_->{fstype}
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}
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} @{$list} };
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return $res;
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}
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my $get_devices_by_partuuid = sub {
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my ($lsblk_info, $uuids, $res) = @_;
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$res = {} if !defined($res);
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foreach my $dev (sort keys %{$lsblk_info}) {
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my $uuid = $lsblk_info->{$dev}->{parttype};
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next if !defined($uuid) || !defined($uuids->{$uuid});
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$res->{$dev} = $uuids->{$uuid};
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}
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return $res;
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};
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sub get_zfs_devices {
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my ($lsblk_info) = @_;
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my $res = {};
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return {} if !check_bin($ZPOOL);
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# use zpool and parttype uuid,
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# because log and cache do not have
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# zfs type uuid
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eval {
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run_command([$ZPOOL, 'list', '-HPLv'], outfunc => sub {
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my ($line) = @_;
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if ($line =~ m|^\t([^\t]+)\t|) {
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$res->{$1} = 1;
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}
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});
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};
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# only warn here,
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# because maybe zfs tools are not installed
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warn "$@\n" if $@;
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my $uuids = {
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"6a898cc3-1dd2-11b2-99a6-080020736631" => 1, # apple
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"516e7cba-6ecf-11d6-8ff8-00022d09712b" => 1, # bsd
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};
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$res = $get_devices_by_partuuid->($lsblk_info, $uuids, $res);
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return $res;
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}
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sub get_lvm_devices {
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my ($lsblk_info) = @_;
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my $res = {};
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eval {
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run_command([$PVS, '--noheadings', '--readonly', '-o', 'pv_name'], outfunc => sub{
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my ($line) = @_;
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$line = trim($line);
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if ($line =~ m|^/dev/|) {
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$res->{$line} = 1;
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}
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});
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};
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# if something goes wrong, we do not want
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# to give up, but indicate an error has occurred
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warn "$@\n" if $@;
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my $uuids = {
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"e6d6d379-f507-44c2-a23c-238f2a3df928" => 1,
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};
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$res = $get_devices_by_partuuid->($lsblk_info, $uuids, $res);
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return $res;
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}
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sub get_ceph_journals {
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my ($lsblk_info) = @_;
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my $res = {};
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my $uuids = {
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'45b0969e-9b03-4f30-b4c6-b4b80ceff106' => 1, # journal
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'30cd0809-c2b2-499c-8879-2d6b78529876' => 2, # db
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'5ce17fce-4087-4169-b7ff-056cc58473f9' => 3, # wal
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'cafecafe-9b03-4f30-b4c6-b4b80ceff106' => 4, # block
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};
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$res = $get_devices_by_partuuid->($lsblk_info, $uuids, $res);
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return $res;
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}
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# reads the lv_tags and matches them with the devices
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sub get_ceph_volume_infos {
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my $result = {};
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my $cmd = [ $LVS, '-S', 'lv_name=~^osd-', '-o', 'devices,lv_name,lv_tags',
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'--noheadings', '--readonly', '--separator', ';' ];
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run_command($cmd, outfunc => sub {
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my $line = shift;
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$line =~ s/(?:^\s+)|(?:\s+$)//g; # trim whitespaces
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my $fields = [ split(';', $line) ];
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# lvs syntax is /dev/sdX(Y) where Y is the start (which we do not need)
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my ($dev) = $fields->[0] =~ m|^(/dev/[a-z]+[^(]*)|;
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if ($fields->[1] =~ m|^osd-([^-]+)-|) {
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my $type = $1;
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# $result autovivification is wanted, to not creating empty hashes
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if (($type eq 'block' || $type eq 'data') && $fields->[2] =~ m/ceph.osd_id=([^,]+)/) {
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$result->{$dev}->{osdid} = $1;
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$result->{$dev}->{bluestore} = ($type eq 'block');
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if ($fields->[2] =~ m/ceph\.encrypted=1/) {
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$result->{$dev}->{encrypted} = 1;
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}
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} else {
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# undef++ becomes '1' (see `perldoc perlop`: Auto-increment)
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$result->{$dev}->{$type}++;
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}
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}
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});
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return $result;
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}
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sub get_udev_info {
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my ($dev) = @_;
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my $info = "";
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my $data = {};
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eval {
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run_command(['udevadm', 'info', '-p', $dev, '--query', 'all'], outfunc => sub {
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my ($line) = @_;
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$info .= "$line\n";
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});
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};
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warn $@ if $@;
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return undef if !$info;
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return undef if $info !~ m/^E: DEVTYPE=disk$/m;
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return undef if $info =~ m/^E: ID_CDROM/m;
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# we use this, because some disks are not simply in /dev
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# e.g. /dev/cciss/c0d0
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if ($info =~ m/^E: DEVNAME=(\S+)$/m) {
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$data->{devpath} = $1;
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}
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return if !defined($data->{devpath});
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$data->{serial} = 'unknown';
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if ($info =~ m/^E: ID_SERIAL_SHORT=(\S+)$/m) {
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$data->{serial} = $1;
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}
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$data->{gpt} = 0;
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if ($info =~ m/^E: ID_PART_TABLE_TYPE=gpt$/m) {
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$data->{gpt} = 1;
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}
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# detect SSD
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$data->{rpm} = -1;
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if ($info =~ m/^E: ID_ATA_ROTATION_RATE_RPM=(\d+)$/m) {
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$data->{rpm} = $1;
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}
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if ($info =~ m/^E: ID_BUS=usb$/m) {
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$data->{usb} = 1;
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}
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if ($info =~ m/^E: ID_MODEL=(.+)$/m) {
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$data->{model} = $1;
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}
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$data->{wwn} = 'unknown';
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if ($info =~ m/^E: ID_WWN=(.*)$/m) {
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$data->{wwn} = $1;
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}
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if ($info =~ m/^E: DEVLINKS=(.+)$/m) {
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my @devlinks = grep(m#^/dev/disk/by-id/(ata|scsi|nvme(?!-eui))#, split (/ /, $1));
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$data->{by_id_link} = $devlinks[0] if defined($devlinks[0]);
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}
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return $data;
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}
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sub get_sysdir_size {
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my ($sysdir) = @_;
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my $size = file_read_firstline("$sysdir/size");
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return if !$size;
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# linux always considers sectors to be 512 bytes,
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# independently of real block size
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return $size * 512;
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}
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sub get_sysdir_info {
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my ($sysdir) = @_;
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return undef if ! -d "$sysdir/device";
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my $data = {};
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$data->{size} = get_sysdir_size($sysdir) or return;
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# dir/queue/rotational should be 1 for hdd, 0 for ssd
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$data->{rotational} = file_read_firstline("$sysdir/queue/rotational") // -1;
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$data->{vendor} = file_read_firstline("$sysdir/device/vendor") || 'unknown';
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$data->{model} = file_read_firstline("$sysdir/device/model") || 'unknown';
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if (defined(my $device = readlink("$sysdir/device"))) {
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# strip directory and untaint:
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($data->{device}) = $device =~ m!([^/]+)$!;
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}
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return $data;
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}
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sub get_wear_leveling_info {
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my ($smartdata) = @_;
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my $attributes = $smartdata->{attributes};
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if (defined($smartdata->{wearout})) {
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return $smartdata->{wearout};
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}
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my $wearout;
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# Common register names that represent percentage values of potential
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# failure indicators used in drivedb.h of smartmontool's. Order matters,
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# as some drives may have multiple definitions
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my @wearoutregisters = (
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"Media_Wearout_Indicator",
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"SSD_Life_Left",
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"Wear_Leveling_Count",
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"Perc_Write\/Erase_Ct_BC",
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"Perc_Rated_Life_Remain",
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"Remaining_Lifetime_Perc",
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"Percent_Lifetime_Remain",
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"Lifetime_Left",
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"PCT_Life_Remaining",
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"Lifetime_Remaining",
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"Percent_Life_Remaining",
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"Percent_Lifetime_Used",
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"Perc_Rated_Life_Used"
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);
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# Search for S.M.A.R.T. attributes for known register
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foreach my $register (@wearoutregisters) {
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last if defined $wearout;
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foreach my $attr (@$attributes) {
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next if $attr->{name} !~ m/$register/;
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$wearout = $attr->{value};
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last;
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}
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}
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return $wearout;
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}
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sub dir_is_empty {
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my ($dir) = @_;
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my $dh = IO::Dir->new ($dir);
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return 1 if !$dh;
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while (defined(my $tmp = $dh->read)) {
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next if $tmp eq '.' || $tmp eq '..';
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$dh->close;
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return 0;
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}
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$dh->close;
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return 1;
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}
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sub is_iscsi {
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my ($sysdir) = @_;
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if (-l $sysdir && readlink($sysdir) =~ m|host[^/]*/session[^/]*|) {
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return 1;
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}
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return 0;
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}
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my sub is_ssdlike {
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my ($type) = @_;
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return $type eq 'ssd' || $type eq 'nvme';
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}
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sub mounted_blockdevs {
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my $mounted = {};
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my $mounts = PVE::ProcFSTools::parse_proc_mounts();
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foreach my $mount (@$mounts) {
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next if $mount->[0] !~ m|^/dev/|;
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$mounted->{abs_path($mount->[0])} = $mount->[1];
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};
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return $mounted;
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}
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sub get_disks {
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my ($disks, $nosmart, $include_partitions) = @_;
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my $disklist = {};
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my $mounted = mounted_blockdevs();
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my $lsblk_info = get_lsblk_info();
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my $journalhash = get_ceph_journals($lsblk_info);
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my $ceph_volume_infos = get_ceph_volume_infos();
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my $zfshash = get_zfs_devices($lsblk_info);
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my $lvmhash = get_lvm_devices($lsblk_info);
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my $disk_regex = ".*";
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if (defined($disks)) {
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if (!ref($disks)) {
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$disks = [ $disks ];
|
|
} elsif (ref($disks) ne 'ARRAY') {
|
|
die "disks is not a string or array reference\n";
|
|
}
|
|
# we get cciss/c0d0 but need cciss!c0d0
|
|
$_ =~ s|cciss/|cciss!| for @$disks;
|
|
|
|
$disk_regex = "(?:" . join('|', @$disks) . ")";
|
|
}
|
|
|
|
dir_glob_foreach('/sys/block', $disk_regex, sub {
|
|
my ($dev) = @_;
|
|
# whitelisting following devices
|
|
# hdX: ide block device
|
|
# sdX: sd block device
|
|
# vdX: virtual block device
|
|
# xvdX: xen virtual block device
|
|
# nvmeXnY: nvme devices
|
|
# cciss!cXnY: cciss devices
|
|
return if $dev !~ m/^(h|s|x?v)d[a-z]+$/ &&
|
|
$dev !~ m/^nvme\d+n\d+$/ &&
|
|
$dev !~ m/^cciss\!c\d+d\d+$/;
|
|
|
|
my $data = get_udev_info("/sys/block/$dev");
|
|
return if !defined($data);
|
|
my $devpath = $data->{devpath};
|
|
|
|
my $sysdir = "/sys/block/$dev";
|
|
|
|
# we do not want iscsi devices
|
|
return if is_iscsi($sysdir);
|
|
|
|
my $sysdata = get_sysdir_info($sysdir);
|
|
return if !defined($sysdata);
|
|
|
|
my $type = 'unknown';
|
|
|
|
if ($sysdata->{rotational} == 0) {
|
|
$type = 'ssd';
|
|
$type = 'nvme' if $dev =~ m/^nvme\d+n\d+$/;
|
|
$data->{rpm} = 0;
|
|
} elsif ($sysdata->{rotational} == 1) {
|
|
if ($data->{rpm} != -1) {
|
|
$type = 'hdd';
|
|
} elsif ($data->{usb}) {
|
|
$type = 'usb';
|
|
$data->{rpm} = 0;
|
|
}
|
|
}
|
|
|
|
my $health = 'UNKNOWN';
|
|
my $wearout = 'N/A';
|
|
|
|
if (!$nosmart) {
|
|
eval {
|
|
my $smartdata = get_smart_data($devpath, !is_ssdlike($type));
|
|
$health = $smartdata->{health} if $smartdata->{health};
|
|
|
|
if (is_ssdlike($type)) {
|
|
# if we have an ssd we try to get the wearout indicator
|
|
my $wearval = get_wear_leveling_info($smartdata);
|
|
$wearout = $wearval if defined($wearval);
|
|
}
|
|
};
|
|
}
|
|
|
|
# we replaced cciss/ with cciss! above
|
|
# but in the result we need cciss/ again
|
|
# because the caller might want to check the
|
|
# result again with the original parameter
|
|
if ($dev =~ m|^cciss!|) {
|
|
$dev =~ s|^cciss!|cciss/|;
|
|
}
|
|
|
|
$disklist->{$dev} = {
|
|
vendor => $sysdata->{vendor},
|
|
model => $data->{model} || $sysdata->{model},
|
|
size => $sysdata->{size},
|
|
serial => $data->{serial},
|
|
gpt => $data->{gpt},
|
|
rpm => $data->{rpm},
|
|
type => $type,
|
|
wwn => $data->{wwn},
|
|
health => $health,
|
|
devpath => $devpath,
|
|
wearout => $wearout,
|
|
};
|
|
|
|
my $by_id_link = $data->{by_id_link};
|
|
$disklist->{$dev}->{by_id_link} = $by_id_link if defined($by_id_link);
|
|
|
|
my $osdid = -1;
|
|
my $bluestore = 0;
|
|
my $osdencrypted = 0;
|
|
|
|
my $journal_count = 0;
|
|
my $db_count = 0;
|
|
my $wal_count = 0;
|
|
|
|
my $partpath = $devpath;
|
|
|
|
# remove part after last / to
|
|
# get the base path for the partitions
|
|
# e.g. from /dev/cciss/c0d0 get /dev/cciss
|
|
$partpath =~ s/\/[^\/]+$//;
|
|
|
|
my $determine_usage = sub {
|
|
my ($devpath, $sysdir, $is_partition) = @_;
|
|
|
|
return 'LVM' if $lvmhash->{$devpath};
|
|
return 'ZFS' if $zfshash->{$devpath};
|
|
|
|
my $info = $lsblk_info->{$devpath} // {};
|
|
|
|
my $parttype = $info->{parttype};
|
|
if (defined($parttype)) {
|
|
return 'BIOS boot'
|
|
if $parttype eq '21686148-6449-6e6f-744e-656564454649';
|
|
return 'EFI'
|
|
if $parttype eq 'c12a7328-f81f-11d2-ba4b-00a0c93ec93b';
|
|
return 'ZFS reserved'
|
|
if $parttype eq '6a945a3b-1dd2-11b2-99a6-080020736631';
|
|
}
|
|
|
|
my $fstype = $info->{fstype};
|
|
if (defined($fstype)) {
|
|
return "${fstype} (mounted)" if $mounted->{$devpath};
|
|
return "${fstype}";
|
|
}
|
|
return 'mounted' if $mounted->{$devpath};
|
|
|
|
return if !$is_partition;
|
|
|
|
# for devices, this check is done explicitly later
|
|
return 'Device Mapper' if !dir_is_empty("$sysdir/holders");
|
|
|
|
return 'partition';
|
|
};
|
|
|
|
my $collect_ceph_info = sub {
|
|
my ($devpath) = @_;
|
|
|
|
my $ceph_volume = $ceph_volume_infos->{$devpath} or return;
|
|
$journal_count += $ceph_volume->{journal} // 0;
|
|
$db_count += $ceph_volume->{db} // 0;
|
|
$wal_count += $ceph_volume->{wal} // 0;
|
|
if (defined($ceph_volume->{osdid})) {
|
|
$osdid = $ceph_volume->{osdid};
|
|
$bluestore = 1 if $ceph_volume->{bluestore};
|
|
$osdencrypted = 1 if $ceph_volume->{encrypted};
|
|
}
|
|
|
|
my $result = { %{$ceph_volume} };
|
|
$result->{journals} = delete $result->{journal}
|
|
if $result->{journal};
|
|
return $result;
|
|
};
|
|
|
|
my $partitions = {};
|
|
|
|
dir_glob_foreach("$sysdir", "$dev.+", sub {
|
|
my ($part) = @_;
|
|
|
|
$partitions->{$part} = $collect_ceph_info->("$partpath/$part");
|
|
my $lvm_based_osd = defined($partitions->{$part});
|
|
|
|
$partitions->{$part}->{devpath} = "$partpath/$part";
|
|
$partitions->{$part}->{parent} = "$devpath";
|
|
$partitions->{$part}->{gpt} = $data->{gpt};
|
|
$partitions->{$part}->{type} = 'partition';
|
|
$partitions->{$part}->{size} =
|
|
get_sysdir_size("$sysdir/$part") // 0;
|
|
$partitions->{$part}->{used} =
|
|
$determine_usage->("$partpath/$part", "$sysdir/$part", 1);
|
|
$partitions->{$part}->{osdid} //= -1;
|
|
|
|
# Avoid counting twice (e.g. partition on which the LVM for the
|
|
# DB OSD resides is present in the $journalhash)
|
|
return if $lvm_based_osd;
|
|
|
|
# Legacy handling for non-LVM based OSDs
|
|
|
|
if (my $mp = $mounted->{"$partpath/$part"}) {
|
|
if ($mp =~ m|^/var/lib/ceph/osd/ceph-(\d+)$|) {
|
|
$osdid = $1;
|
|
$partitions->{$part}->{osdid} = $osdid;
|
|
}
|
|
}
|
|
|
|
if (my $journal_part = $journalhash->{"$partpath/$part"}) {
|
|
$journal_count++ if $journal_part == 1;
|
|
$db_count++ if $journal_part == 2;
|
|
$wal_count++ if $journal_part == 3;
|
|
$bluestore = 1 if $journal_part == 4;
|
|
|
|
$partitions->{$part}->{journals} = 1 if $journal_part == 1;
|
|
$partitions->{$part}->{db} = 1 if $journal_part == 2;
|
|
$partitions->{$part}->{wal} = 1 if $journal_part == 3;
|
|
$partitions->{$part}->{bluestore} = 1 if $journal_part == 4;
|
|
}
|
|
});
|
|
|
|
my $used = $determine_usage->($devpath, $sysdir, 0);
|
|
if (!$include_partitions) {
|
|
foreach my $part (sort keys %{$partitions}) {
|
|
next if $partitions->{$part}->{used} eq 'partition';
|
|
$used //= $partitions->{$part}->{used};
|
|
}
|
|
} else {
|
|
# fstype might be set even if there are partitions, but showing that is confusing
|
|
$used = 'partitions' if scalar(keys %{$partitions});
|
|
}
|
|
$used //= 'partitions' if scalar(keys %{$partitions});
|
|
# multipath, software raid, etc.
|
|
# this check comes in last, to show more specific info
|
|
# if we have it
|
|
$used //= 'Device Mapper' if !dir_is_empty("$sysdir/holders");
|
|
|
|
$disklist->{$dev}->{used} = $used if $used;
|
|
|
|
$collect_ceph_info->($devpath);
|
|
|
|
$disklist->{$dev}->{osdid} = $osdid;
|
|
$disklist->{$dev}->{journals} = $journal_count if $journal_count;
|
|
$disklist->{$dev}->{bluestore} = $bluestore if $osdid != -1;
|
|
$disklist->{$dev}->{osdencrypted} = $osdencrypted if $osdid != -1;
|
|
$disklist->{$dev}->{db} = $db_count if $db_count;
|
|
$disklist->{$dev}->{wal} = $wal_count if $wal_count;
|
|
|
|
if ($include_partitions) {
|
|
foreach my $part (keys %{$partitions}) {
|
|
$disklist->{$part} = $partitions->{$part};
|
|
}
|
|
}
|
|
});
|
|
|
|
return $disklist;
|
|
|
|
}
|
|
|
|
sub get_partnum {
|
|
my ($part_path) = @_;
|
|
|
|
my $st = stat($part_path);
|
|
|
|
die "error detecting block device '$part_path'\n"
|
|
if !$st || !$st->mode || !S_ISBLK($st->mode) || !$st->rdev;
|
|
|
|
my $major = PVE::Tools::dev_t_major($st->rdev);
|
|
my $minor = PVE::Tools::dev_t_minor($st->rdev);
|
|
my $partnum_path = "/sys/dev/block/$major:$minor/";
|
|
|
|
my $partnum;
|
|
|
|
$partnum = file_read_firstline("${partnum_path}partition");
|
|
|
|
die "Partition does not exist\n" if !defined($partnum);
|
|
|
|
#untaint and ensure it is a int
|
|
if ($partnum =~ m/(\d+)/) {
|
|
$partnum = $1;
|
|
die "Partition number $partnum is invalid\n" if $partnum > 128;
|
|
} else {
|
|
die "Failed to get partition number\n";
|
|
}
|
|
|
|
return $partnum;
|
|
}
|
|
|
|
sub get_blockdev {
|
|
my ($part_path) = @_;
|
|
|
|
my ($dev, $block_dev);
|
|
if ($part_path =~ m|^/dev/(.*)$|) {
|
|
$dev = $1;
|
|
my $link = readlink "/sys/class/block/$dev";
|
|
$block_dev = $1 if $link =~ m|([^/]*)/$dev$|;
|
|
}
|
|
|
|
die "Can't parse parent device\n" if !defined($block_dev);
|
|
die "No valid block device\n" if index($dev, $block_dev) == -1;
|
|
|
|
$block_dev = "/dev/$block_dev";
|
|
die "Block device does not exists\n" if !(-b $block_dev);
|
|
|
|
return $block_dev;
|
|
}
|
|
|
|
sub locked_disk_action {
|
|
my ($sub) = @_;
|
|
my $res = PVE::Tools::lock_file('/run/lock/pve-diskmanage.lck', undef, $sub);
|
|
die $@ if $@;
|
|
return $res;
|
|
}
|
|
|
|
sub assert_disk_unused {
|
|
my ($dev) = @_;
|
|
|
|
die "device '$dev' is already in use\n" if disk_is_used($dev);
|
|
|
|
return undef;
|
|
}
|
|
|
|
sub append_partition {
|
|
my ($dev, $size) = @_;
|
|
|
|
my $devname = $dev;
|
|
$devname =~ s|^/dev/||;
|
|
|
|
my $newpartid = 1;
|
|
dir_glob_foreach("/sys/block/$devname", qr/\Q$devname\E.*?(\d+)/, sub {
|
|
my ($part, $partid) = @_;
|
|
|
|
if ($partid >= $newpartid) {
|
|
$newpartid = $partid + 1;
|
|
}
|
|
});
|
|
|
|
$size = PVE::Tools::convert_size($size, 'b' => 'mb');
|
|
|
|
run_command([ $SGDISK, '-n', "$newpartid:0:+${size}M", $dev ],
|
|
errmsg => "error creating partition '$newpartid' on '$dev'");
|
|
|
|
my $partition;
|
|
|
|
# loop again to detect the real partition device which does not always follow
|
|
# a strict $devname$partition scheme like /dev/nvme0n1 -> /dev/nvme0n1p1
|
|
dir_glob_foreach("/sys/block/$devname", qr/\Q$devname\E.*$newpartid/, sub {
|
|
my ($part) = @_;
|
|
|
|
$partition = "/dev/$part";
|
|
});
|
|
|
|
return $partition;
|
|
}
|
|
|
|
my sub strip_dev :prototype($) {
|
|
my ($devpath) = @_;
|
|
$devpath =~ s|^/dev/||;
|
|
return $devpath;
|
|
}
|
|
|
|
# Check if a disk or any of its partitions has a holder.
|
|
# Can also be called with a partition.
|
|
# Expected to be called with a result of verify_blockdev_path().
|
|
sub has_holder {
|
|
my ($devpath) = @_;
|
|
|
|
my $dev = strip_dev($devpath);
|
|
|
|
return $devpath if !dir_is_empty("/sys/class/block/${dev}/holders");
|
|
|
|
my $found;
|
|
dir_glob_foreach("/sys/block/${dev}", "${dev}.+", sub {
|
|
my ($part) = @_;
|
|
$found = "/dev/${part}" if !dir_is_empty("/sys/class/block/${part}/holders");
|
|
});
|
|
|
|
return $found;
|
|
}
|
|
|
|
# Basic check if a disk or any of its partitions is mounted.
|
|
# Can also be called with a partition.
|
|
# Expected to be called with a result of verify_blockdev_path().
|
|
sub is_mounted {
|
|
my ($devpath) = @_;
|
|
|
|
my $mounted = mounted_blockdevs();
|
|
|
|
return $devpath if $mounted->{$devpath};
|
|
|
|
my $dev = strip_dev($devpath);
|
|
|
|
my $found;
|
|
dir_glob_foreach("/sys/block/${dev}", "${dev}.+", sub {
|
|
my ($part) = @_;
|
|
my $partpath = "/dev/${part}";
|
|
|
|
$found = $partpath if $mounted->{$partpath};
|
|
});
|
|
|
|
return $found;
|
|
}
|
|
|
|
# Wipes all labels and the first 200 MiB of a disk/partition (or the whole if it is smaller).
|
|
# Expected to be called with a result of verify_blockdev_path().
|
|
sub wipe_blockdev {
|
|
my ($devpath) = @_;
|
|
|
|
my $devname = basename($devpath);
|
|
my $dev_size = PVE::Tools::file_get_contents("/sys/class/block/$devname/size");
|
|
|
|
($dev_size) = $dev_size =~ m|(\d+)|; # untaint $dev_size
|
|
die "Couldn't get the size of the device $devname\n" if !defined($dev_size);
|
|
|
|
my $size = ($dev_size * 512 / 1024 / 1024);
|
|
my $count = ($size < 200) ? $size : 200;
|
|
|
|
my $to_wipe = [];
|
|
dir_glob_foreach("/sys/class/block/${devname}", "${devname}.+", sub {
|
|
my ($part) = @_;
|
|
push $to_wipe->@*, "/dev/${part}" if -b "/dev/${part}";
|
|
});
|
|
|
|
if (scalar($to_wipe->@*) > 0) {
|
|
print "found child partitions to wipe: ". join(', ', $to_wipe->@*) ."\n";
|
|
}
|
|
push $to_wipe->@*, $devpath; # put actual device last
|
|
|
|
print "wiping block device ${devpath}\n";
|
|
|
|
run_command(['wipefs', '--all', $to_wipe->@*], errmsg => "error wiping '${devpath}'");
|
|
|
|
run_command(
|
|
['dd', 'if=/dev/zero', "of=${devpath}", 'bs=1M', 'conv=fdatasync', "count=${count}"],
|
|
errmsg => "error wiping '${devpath}'",
|
|
);
|
|
}
|
|
|
|
1;
|