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RAID: Do not allow RAID LVs in a cluster volume group.

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It would be possible to activate a RAID LV exclusively in a cluster
volume group, but for now we do not allow RAID LVs to exist in a
clustered volume group at all.  This has two components:
	1) Do not allow RAID LVs to be created in a clustered VG
	2) Do not allow changing a VG from single-machine to clustered
	   if there are RAID LVs present.
This commit is contained in:
Jonathan Brassow 2012-10-03 15:52:54 -05:00
parent a27650cc98
commit 9efd3fb604
3 changed files with 30 additions and 3 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.98 -
=================================
Do not allow RAID LVs in a clustered volume group.
Update lvconvert to support stacking of devs for thin meta/data devs.
Support changes of permissions for thin snapshot volumes.
Enhance insert_layer_for_lv() with recursive rename for _tdata LVs.

19
lib/metadata/lv_manip.c
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@ -4438,10 +4438,25 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, struct l
if (!(lvl = find_lv_in_vg(vg, lp->pool))) {
log_error("Unable to find existing pool LV %s in VG %s.",
lp->pool, vg->name);
return 0;
return NULL;
}
if (!update_pool_lv(lvl->lv, 1))
return_0;
return_NULL;
}
if (vg_is_clustered(vg) && segtype_is_raid(lp->segtype)) {
/*
* FIXME:
* We could allow a RAID LV to be created as long as it
* is activated exclusively. Any subsequent activations
* would have to be enforced as exclusive also.
*
* For now, we disallow the existence of RAID LVs in a
* cluster VG
*/
log_error("Unable to create a %s logical volume in a cluster.",
lp->segtype->name);
return NULL;
}
if (segtype_is_mirrored(lp->segtype) || segtype_is_raid(lp->segtype)) {

13
lib/metadata/vg.c
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@ -514,9 +514,20 @@ int vg_set_clustered(struct volume_group *vg, int clustered)
/*
* We do not currently support switching the cluster attribute
* on active mirrors or snapshots.
* on active mirrors, snapshots or RAID logical volumes.
*/
dm_list_iterate_items(lvl, &vg->lvs) {
/*
* FIXME:
* We could allow exclusive activation of RAID LVs, but
* for now we disallow them in a cluster VG at all.
*/
if (lv_is_raid_type(lvl->lv)) {
log_error("RAID logical volumes are not allowed "
"in a cluster volume group.");
return 0;
}
if (lv_is_active(lvl->lv) &&
(lv_is_mirrored(lvl->lv) || lv_is_raid_type(lvl->lv))) {
log_error("%s logical volumes must be inactive "