shaba/lvm2
1
0
Fork 0
mirror of git://sourceware.org/git/lvm2.git synced 2024-10-27 01:55:10 +03:00
Code Releases Activity

thin: fix merge of old snaphost

Browse Source 
Fix merging of old snapshot into thinvolume origin.
Add also internal error for the error case when
merging requests activation of merged LV.
This commit is contained in:
Zdenek Kabelac 2014-02-17 21:48:27 +01:00
parent f33a224ef0
commit 25cea92338
5 changed files with 19 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
WHATS_NEW
View File

@ -1,5 +1,6 @@
Version 2.02.106 -
====================================
Fix merging of old snapshot into thin volume origin.
Use --ignoreskippedcluster in lvm2-monitor initscript/systemd unit.
Do not use VG read/write state for LV read/write state.
Use --ignoreskippedcluster in activation systemd units if use_lvmetad=0.

3
lib/metadata/snapshot_manip.c
View File

@ -15,6 +15,7 @@
#include "lib.h"
#include "metadata.h"
#include "segtype.h"
#include "locking.h"
#include "toolcontext.h"
#include "lv_alloc.h"
@ -151,7 +152,7 @@ void init_snapshot_merge(struct lv_segment *snap_seg,
origin->snapshot = snap_seg;
origin->status |= MERGING;
if (lv_is_thin_volume(origin)) {
if (seg_is_thin_volume(snap_seg)) {
snap_seg->merge_lv = origin;
/* Making thin LV inivisible with regular log */
lv_set_hidden(snap_seg->lv);

11
lib/thin/thin.c
View File

@ -542,18 +542,19 @@ static int _thin_add_target_line(struct dev_manager *dm,
}
if (!laopts->no_merging) {
if (seg->merge_lv) {
log_error(INTERNAL_ERROR "Failed to add merged segment of %s.",
seg->lv->name);
return 0;
}
/*
* merge support for thinp snapshots is implemented by
* simply swapping the thinp device_id of the snapshot
* and origin.
*/
if (seg->merge_lv) {
/* snapshot, use merging lv's device_id */
device_id = first_seg(seg->merge_lv)->device_id;
} else if (lv_is_merging_origin(seg->lv)) {
if (lv_is_merging_origin(seg->lv) && seg_is_thin_volume(find_snapshot(seg->lv)))
/* origin, use merging snapshot's device_id */
device_id = find_snapshot(seg->lv)->device_id;
}
}
if (!dm_tree_node_add_thin_target(node, len, pool_dlid, device_id))

15
test/shell/thin-merge.sh
View File

@ -13,7 +13,8 @@
. lib/test
which mkfs.ext2 || skip
MKFS=mkfs.ext2
which $MKFS || skip
which fsck || skip
#
@ -27,13 +28,13 @@ lvcreate -T -L8M $vg/pool -V10M -n $lv1
lvchange --addtag tagL $vg/$lv1
mkdir mnt
mkfs.ext2 $DM_DEV_DIR/$vg/$lv1
$MKFS $DM_DEV_DIR/$vg/$lv1
mount $DM_DEV_DIR/$vg/$lv1 mnt
touch mnt/test
lvcreate -K -s -n snap --addtag tagS $vg/$lv1
mkdir mntsnap
mkfs.ext2 $DM_DEV_DIR/$vg/snap
$MKFS $DM_DEV_DIR/$vg/snap
mount $DM_DEV_DIR/$vg/snap mntsnap
touch mntsnap/test_snap
@ -82,7 +83,7 @@ lvchange -ay $vg/$lv1
check lv_exists $vg $lv1
check lv_field $vg/$lv1 thin_id "2"
check lv_field $vg/$lv1 tags "tagL"
not check lv_exists $vg snap
check lv_not_exists $vg snap
fsck -n $DM_DEV_DIR/$vg/$lv1
mount $DM_DEV_DIR/$vg/$lv1 mnt
@ -97,8 +98,10 @@ lvcreate -s -n snap $vg/$lv1
# Also add old snapshot to thin origin
lvcreate -s -L10 -n oldsnapof_${lv1} $vg/$lv1
not lvconvert --merge $vg/snap
lvremove -f $vg/oldsnapof_${lv1}
$MKFS $DM_DEV_DIR/$vg/oldsnapof_${lv1}
lvconvert --merge $vg/oldsnapof_${lv1}
fsck -n $DM_DEV_DIR/$vg/$lv1
check lv_not_exists $vg oldsnapof_${lv1}
# Add old snapshot to thin snapshot
lvcreate -s -L10 -n oldsnapof_snap $vg/snap
lvconvert --merge $vg/snap

2
tools/lvconvert.c
View File

@ -897,7 +897,7 @@ int lvconvert_poll(struct cmd_context *cmd, struct logical_volume *lv,
if (lv_is_merging_origin(lv))
return poll_daemon(cmd, lv_full_name, uuid, background, 0,
lv_is_thin_volume(lv) ?
seg_is_thin_volume(find_snapshot(lv)) ?
&_lvconvert_thin_merge_fns : &_lvconvert_merge_fns,
"Merged");