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4c7ee1 |
commit d00fc1de784cee27d6ddb1b045a67c930f743074
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4c7ee1 |
Author: Zdenek Kabelac <zkabelac@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
Date: Thu Feb 27 12:55:50 2014 +0100
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4c7ee1 |
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4c7ee1 |
snapshot: correct previous snapshot commit
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4c7ee1 |
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4c7ee1 |
Condition was swapped - however since it's been based on 'random'
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4c7ee1 |
memory content it's been missed as attribute has not been set.
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4c7ee1 |
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4c7ee1 |
So now we have quite a few possible results when testing.
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4c7ee1 |
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4c7ee1 |
We have old status without separate metadata and
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
we have kernels with fixed snapshot leak bug.
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4c7ee1 |
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4c7ee1 |
(in-release update)
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4c7ee1 |
---
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4c7ee1 |
lib/metadata/snapshot_manip.c | 4 ++--
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4c7ee1 |
lib/snapshot/snapshot.c | 3 +++
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4c7ee1 |
test/shell/snapshot-usage.sh | 31 ++++++++++++++++++++++++-------
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4c7ee1 |
3 files changed, 29 insertions(+), 9 deletions(-)
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4c7ee1 |
diff --git a/lib/metadata/snapshot_manip.c b/lib/metadata/snapshot_manip.c
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4c7ee1 |
index 25fee76..8fcab0c 100644
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4c7ee1 |
--- a/lib/metadata/snapshot_manip.c
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4c7ee1 |
+++ b/lib/metadata/snapshot_manip.c
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4c7ee1 |
@@ -46,9 +46,9 @@ static uint64_t _cow_extra_chunks(struct cmd_context *cmd, uint64_t n_chunks)
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4c7ee1 |
segtype->ops->target_present &&
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4c7ee1 |
segtype->ops->target_present(cmd, NULL, &attrs) &&
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4c7ee1 |
(attrs & SNAPSHOT_FEATURE_FIXED_LEAK))
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4c7ee1 |
- return (n_chunks + 63) / 64;
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4c7ee1 |
+ return 0;
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4c7ee1 |
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4c7ee1 |
- return 0;
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4c7ee1 |
+ return (n_chunks + 63) / 64;
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4c7ee1 |
}
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4c7ee1 |
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4c7ee1 |
static uint64_t _cow_max_size(struct cmd_context *cmd, uint64_t origin_size, uint32_t chunk_size)
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4c7ee1 |
diff --git a/lib/snapshot/snapshot.c b/lib/snapshot/snapshot.c
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4c7ee1 |
index 0b7b845..64919b0 100644
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4c7ee1 |
--- a/lib/snapshot/snapshot.c
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4c7ee1 |
+++ b/lib/snapshot/snapshot.c
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4c7ee1 |
@@ -165,6 +165,9 @@ static int _snap_target_present(struct cmd_context *cmd,
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log_very_verbose("Target snapshot may leak metadata.");
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4c7ee1 |
}
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4c7ee1 |
+ if (attributes)
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+ *attributes = _snap_attrs;
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4c7ee1 |
+
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4c7ee1 |
/* TODO: test everything at once */
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4c7ee1 |
if (seg && (seg->status & MERGING)) {
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if (!_snap_merge_checked) {
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4c7ee1 |
diff --git a/test/shell/snapshot-usage.sh b/test/shell/snapshot-usage.sh
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4c7ee1 |
index cb60556..bd0723d 100644
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4c7ee1 |
--- a/test/shell/snapshot-usage.sh
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4c7ee1 |
+++ b/test/shell/snapshot-usage.sh
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4c7ee1 |
@@ -33,6 +33,25 @@ vgcreate -s 4M $vg $(cat DEVICES)
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4c7ee1 |
TSIZE=15P
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4c7ee1 |
aux can_use_16T || TSIZE=15T
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4c7ee1 |
+# With different snapshot target driver we may obtain different results.
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4c7ee1 |
+# Older targets have metadata leak bug which needs extra compenstion.
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4c7ee1 |
+# Ancient targets do not even provide separate info for metadata.
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4c7ee1 |
+EXPECT1="16.00k"
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4c7ee1 |
+EXPECT2="512.00k"
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4c7ee1 |
+EXPECT3="32.00k"
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4c7ee1 |
+EXPECT4="66.67"
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4c7ee1 |
+if aux target_at_least dm-snapshot 1 10 0 ; then
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4c7ee1 |
+ # Extra metadata size
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4c7ee1 |
+ EXPECT4="0.00"
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4c7ee1 |
+
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4c7ee1 |
+ if aux target_at_least dm-snapshot 1 12 0 ; then
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4c7ee1 |
+ # When fixed leak, expect smaller sizes
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4c7ee1 |
+ EXPECT1="12.00k"
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4c7ee1 |
+ EXPECT2="384.00k"
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4c7ee1 |
+ EXPECT3="28.00k"
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4c7ee1 |
+ fi
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4c7ee1 |
+fi
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4c7ee1 |
+
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4c7ee1 |
lvcreate -s -l 100%FREE -n $lv $vg --virtualsize $TSIZE
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4c7ee1 |
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4c7ee1 |
aux extend_filter_LVMTEST
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4c7ee1 |
@@ -86,12 +105,12 @@ lvcreate -an -Zn -l1 -n $lv1 $vg1
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4c7ee1 |
not lvcreate -s -l1 $vg1/$lv1
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4c7ee1 |
not lvcreate -s -l3 $vg1/$lv1
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4c7ee1 |
lvcreate -s -l30 -n $lv2 $vg1/$lv1
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4c7ee1 |
-check lv_field $vg1/$lv2 size "12.00k"
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4c7ee1 |
+check lv_field $vg1/$lv2 size "$EXPECT1"
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4c7ee1 |
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4c7ee1 |
not lvcreate -s -c512 -l512 $vg1/$lv1
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4c7ee1 |
lvcreate -s -c128 -l1700 -n $lv3 $vg1/$lv1
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4c7ee1 |
# 3 * 128
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
-check lv_field $vg1/$lv3 size "384.00k"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
+check lv_field $vg1/$lv3 size "$EXPECT2"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
lvremove -ff $vg1
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
lvcreate -aey -l20 $vg1
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
@@ -110,7 +129,7 @@ lvextend --use-policies $vg1/lvol1
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
check lv_field $vg1/lvol1 size "18.00k"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
lvextend -l+33 $vg1/lvol1
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
-check lv_field $vg1/lvol1 size "32.00k"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
+check lv_field $vg1/lvol1 size "$EXPECT3"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
fill 20K
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
lvremove -f $vg1
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
@@ -138,14 +157,12 @@ fsck -n "$DM_DEV_DIR/$vg1/snap"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
# This test would trigger read of weird percentage for undeleted header
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
# And since older snapshot target counts with metadata sectors
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
# we have 2 valid results (unsure about correct version number)
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
-EXPECT="0.00"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
-aux target_at_least dm-snapshot 1 10 0 || EXPECT="66.67"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
-check lv_field $vg1/snap data_percent "$EXPECT"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
+check lv_field $vg1/snap data_percent "$EXPECT4"
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
vgremove -ff $vg1
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
# Can't test >= 16T devices on 32bit
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
-if test "$TSIZE" -eq 15P ; then
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
+if test "$TSIZE" = 15P ; then
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
# Check usability with largest extent size
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
4c7ee1 |
pvcreate "$DM_DEV_DIR/$vg/$lv"
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