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iscsi direct plugin: support volume export

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Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Tested-by: Filip Schauer <f.schauer@proxmox.com>
This commit is contained in:
Fiona Ebner 2024-12-19 11:43:11 +01:00 committed by Fabian Grünbichler
parent d8a67cb6bf
commit cc0efbd250
1 changed files with 63 additions and 0 deletions
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63
src/PVE/Storage/ISCSIDirectPlugin.pm
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@ -2,9 +2,12 @@ package PVE::Storage::ISCSIDirectPlugin;
use strict;
use warnings;
use IO::File;
use JSON qw(decode_json);
use HTTP::Request;
use LWP::UserAgent;
use PVE::Tools qw(run_command file_read_firstline trim dir_glob_regex dir_glob_foreach);
use PVE::Storage::Plugin;
use PVE::JSONSchema qw(get_standard_option);
@ -252,4 +255,64 @@ sub volume_has_feature {
return undef;
}
sub volume_export_formats {
my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_;
return () if defined($snapshot); # not supported
return () if defined($base_snapshot); # not supported
return () if $with_snapshots; # not supported
return ('raw+size');
}
sub volume_export {
my (
$class,
$scfg,
$storeid,
$fh,
$volname,
$format,
$snapshot,
$base_snapshot,
$with_snapshots,
) = @_;
die "volume export format $format not available for $class\n" if $format ne 'raw+size';
die "cannot export volumes together with their snapshots in $class\n" if $with_snapshots;
die "cannot export an incremental stream in $class\n" if defined($base_snapshot);
die "cannot export a snapshot in $class\n" if defined($snapshot);
my ($file) = $class->path($scfg, $volname, $storeid, $snapshot);
my $json = '';
run_command(
['/usr/bin/qemu-img', 'info', '-f', 'raw', '--output=json', $file],
outfunc => sub { $json .= shift },
);
die "failed to query size information for '$file' with qemu-img\n" if !$json;
my $info = eval { decode_json($json) };
die "could not parse qemu-img info command output for '$file' - $@\n" if $@;
my ($size) = ($info->{'virtual-size'} =~ /^(\d+)$/); # untaint
die "size '$size' not an integer\n" if !defined($size);
$size = int($size); # coerce back from string
PVE::Storage::Plugin::write_common_header($fh, $size);
run_command(
['qemu-img', 'dd', 'bs=64k', "if=$file", '-f', 'raw', '-O', 'raw'],
output => '>&'.fileno($fh),
);
return;
}
sub volume_import_formats {
my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_;
return ();
}
sub volume_import {
die "volume import is not possible on iscsi storage\n";
}
1;