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Thin pool resize support for data LV

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Support for extension of pool data LV.

TODO: figure out thin volume for suspend/resume in cluster.
This commit is contained in:
Zdenek Kabelac 2011-10-28 20:31:01 +00:00
parent 22e6256d00
commit 23177b8aad
2 changed files with 31 additions and 4 deletions
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10
lib/metadata/lv_manip.c
View File

@ -2557,19 +2557,23 @@ int lv_extend(struct logical_volume *lv,
if (segtype_is_virtual(segtype))
return lv_add_virtual_segment(lv, 0u, extents, segtype, thin_pool_name);
if (segtype_is_thin_pool(segtype))
if (!lv->le_count && segtype_is_thin_pool(segtype))
/* Thin pool allocation treats its metadata device like a mirror log. */
log_count = 1;
else if (segtype_is_raid(segtype) && !lv->le_count)
log_count = mirrors * stripes;
/* Thin pool allocation treats its metadata device like a mirror log. */
if (!(ah = allocate_extents(lv->vg, lv, segtype, stripes, mirrors,
log_count, region_size, extents,
allocatable_pvs, alloc, NULL)))
return_0;
if (segtype_is_thin_pool(segtype)) {
if (!(r = extend_pool(lv, segtype, ah)))
if (!lv->le_count) {
if (!(r = extend_pool(lv, segtype, ah)))
stack;
} else if (!(r = _lv_extend_layered_lv(ah, lv, extents, 0,
stripes, stripe_size)))
stack;
} else if (!segtype_is_mirrored(segtype) && !segtype_is_raid(segtype)) {
if (!(r = lv_add_segment(ah, 0, ah->area_count, lv, segtype,

25
tools/lvresize.c
View File

@ -1,6 +1,6 @@
/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
* Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
@ -669,6 +669,25 @@ static int _lvresize(struct cmd_context *cmd, struct volume_group *vg,
}
}
if (lv_is_thin_pool(lv)) {
if (lp->resize == LV_REDUCE) {
log_error("Thin pool volumes cannot be reduced in size yet.");
return ECMD_FAILED;
}
if (lp->resizefs) {
log_warn("Thin pool volumes do not have filesystem.");
lp->resizefs = 0;
}
if (!lp->stripes) {
/* Try to use the same strip settings for underlying pool data LV */
lp->stripes = last_seg(seg_lv(first_seg(lv), 0))->area_count;
if (!lp->stripe_size)
lp->stripe_size = last_seg(seg_lv(first_seg(lv), 0))->stripe_size;
}
}
if ((lp->resize == LV_REDUCE) && lp->argc)
log_warn("Ignoring PVs on command line when reducing");
@ -730,6 +749,10 @@ static int _lvresize(struct cmd_context *cmd, struct volume_group *vg,
/* If snapshot, must suspend all associated devices */
if (lv_is_cow(lv))
lock_lv = origin_from_cow(lv);
else if (lv_is_used_thin_pool(lv))
// FIXME: what to pick here - maybe an active thin?
// but it still seems to be racy in cluster
lock_lv = lv;
else
lock_lv = lv;