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Code Releases Activity

pvscan: add --activate ay option (autoactivate)

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Define auto_activation_handler that activates VGs/LVs automatically
based on the activation/auto_activation_volume_list (activating all
volumes by default if the list is not defined).

The autoactivation is done within the pvscan call in 69-dm-lvmetad.rules
that watches for udev events (device appearance/removal).

For now, this works for non-clustered and complete VGs only.
This commit is contained in:
Peter Rajnoha 2012-06-27 09:35:11 -04:00
parent 215a314f19
commit d2df8dddc8
4 changed files with 32 additions and 2 deletions
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1
WHATS_NEW
View File

@ -1,5 +1,6 @@
Version 2.02.97 -
===============================
Add --activate ay to pvscan.
Add --activate ay to vgchange.
Add support for volume autoactivation using lvmetad.
Add --activate synonym for --available arg and prefer --activate.

4
tools/commands.h
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@ -671,6 +671,7 @@ xx(pvscan,
"List all physical volumes",
PERMITTED_READ_ONLY,
"pvscan " "\n"
"\t[-a|--activate ay]\n"
"\t[--cache [ DevicePath | --major major --minor minor]...]\n"
"\t[-d|--debug] " "\n"
"\t{-e|--exported | -n|--novolumegroup} " "\n"
@ -682,7 +683,8 @@ xx(pvscan,
"\t[-v|--verbose] " "\n"
"\t[--version]\n",
cache_ARG, exported_ARG, ignorelockingfailure_ARG, major_ARG, minor_ARG,
activate_ARG, available_ARG, cache_ARG, exported_ARG,
ignorelockingfailure_ARG, major_ARG, minor_ARG,
novolumegroup_ARG, partial_ARG, short_ARG, uuid_ARG)
xx(segtypes,

27
tools/pvscan.c
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@ -97,6 +97,20 @@ static void _pvscan_display_single(struct cmd_context *cmd,
pv_pe_size(pv)));
}
static int _auto_activation_handler(struct volume_group *vg, int partial, int activate)
{
/* TODO: add support for partial and clustered VGs */
if (partial || vg_is_clustered(vg))
return 1;
if (!vgchange_activate(vg->cmd, vg, activate)) {
log_error("%s: autoactivation failed.", vg->name);
return 0;
}
return 1;
}
static int _pvscan_lvmetad_all_devs(struct cmd_context *cmd, activation_handler handler)
{
struct dev_iter *iter;
@ -136,6 +150,14 @@ static int _pvscan_lvmetad(struct cmd_context *cmd, int argc, char **argv)
char *buf;
activation_handler handler = NULL;
if (arg_count(cmd, activate_ARG)) {
if (arg_uint_value(cmd, activate_ARG, CHANGE_AAY) != CHANGE_AAY) {
log_error("Only --activate ay allowed with pvscan.");
return 0;
}
handler = _auto_activation_handler;
}
if (arg_count(cmd, major_ARG) + arg_count(cmd, minor_ARG))
devno_args = 1;
@ -241,6 +263,11 @@ int pvscan(struct cmd_context *cmd, int argc, char **argv)
if (arg_count(cmd, cache_ARG))
return _pvscan_lvmetad(cmd, argc, argv);
if (arg_count(cmd, activate_ARG)) {
log_error("--activate is only valid with --cache.");
return EINVALID_CMD_LINE;
}
if (arg_count(cmd, major_ARG) + arg_count(cmd, minor_ARG)) {
log_error("--major and --minor are only valid with --cache.");
return EINVALID_CMD_LINE;

2
udev/69-dm-lvm-metad.rules.in
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@ -21,6 +21,6 @@ SUBSYSTEM!="block", GOTO="lvm_end"
KERNEL=="dm-[0-9]*", ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="lvm_end"
# Only process devices already marked as a PV - this requires blkid to be called before.
ENV{ID_FS_TYPE}=="LVM2_member|LVM1_member", RUN+="(LVM_EXEC)/lvm pvscan --cache --major $major --minor $minor"
ENV{ID_FS_TYPE}=="LVM2_member|LVM1_member", RUN+="(LVM_EXEC)/lvm pvscan --cache --activate ay --major $major --minor $minor"
LABEL="lvm_end"