Dne 22. 01. 20 v 11:58 Mauricio Tavares napsal(a):
So after a botched package update I decided to revert to the snapshot
I took just before doing the update. After shutting guest down, I
started
lvconvert --merge vmhost_vg0/desktop_snap_20200121
and instead of seeing the usual percentage of how far it has
completed, I got nothing. lvs -a -o +devices shows
LV VG Attr LSize Pool Origin
Data% Meta% Move Log Cpy%Sync Convert Devices
desktop vmhost_vg0 Owi-a-s--- 20.00g
/dev/sdb3(14848)
[desktop_snap_20200121] vmhost_vg0 Swi-a-s--- 10.00g desktop 100.00
I see nothing when I do lsof against both the lv (lsof
/dev/vmhost_vg0/desktop) and its snapshot. dmsetup tells me:
[root@vmhost ~]# dmsetup info /dev/vmhost_vg0/desktop
Name: vmhost_vg0-desktop
State: ACTIVE
Read Ahead: 256
Tables present: LIVE
Open count: 0
Event number: 0
Major, minor: 253, 5
Number of targets: 1
UUID: LVM-qa4WnlE7w8V7pasHwdNH6bnpz2ajYY1F2ZXwTWzpUE2r6eE2DftMGLHdeATE8XAq
[root@vmhost ~]# dmsetup info /dev/vmhost_vg0/desktop_snap_20200121
Name: vmhost_vg0-desktop_snap_20200121
State: ACTIVE
Read Ahead: 256
Tables present: LIVE
Open count: 0
Event number: 0
Major, minor: 253, 15
Number of targets: 1
UUID: LVM-qa4WnlE7w8V7pasHwdNH6bnpz2ajYY1FkyXcvv8ai1Sc0q5zlsXeenYOqCPUXs3M
[root@vmhost ~]#
Before I blow that lv up, what else should I be checking?
Hi
Merging can ONLY start when devices are not in-use - so if you've issued merge
command while devices were still opened - the 'merge' operation has
been just committed into lvm2 metadata and the actual merge would normally
happen/start with next activation of the merged LV.
You can invoke it also by issuing 'lvchange --refresh' which may start to
merging (if the conditions do allow the operation to start).
Regard
Zdenek
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