[Bug 581590] New: lvm2 lvremove on snapshots works only sometimes

bugzilla_noreply＠novell.com

20 Feb 2010 20 Feb '10

15:51

http://bugzilla.novell.com/show_bug.cgi?id=581590 http://bugzilla.novell.com/show_bug.cgi?id=581590#c0 Summary: lvm2 lvremove on snapshots works only sometimes Classification: openSUSE Product: openSUSE 11.2 Version: Final Platform: x86-64 OS/Version: openSUSE 11.2 Status: NEW Severity: Normal Priority: P5 - None Component: Basesystem AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: gleixner@bib-bvb.de QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.7) Gecko/20091222 SUSE/3.5.7-1.1.1 Firefox/3.5.7 while trying to remove a lvm2 snapshot it works sometimes, and sometimes not. Probably related to bug #556177 Reproducible: Sometimes Steps to Reproduce: 1. create lvcreate -s -L 5g -n test-snap /dev/vg_system/testvol (shows actually bug #556177 ) 2. check lvs |grep test-snap test-snap vg_system swi-a- 5.00G encrypted 0.00 lvdisplay /dev/vg_system/test-snap --- Logical volume --- LV Name /dev/vg_system/test-snap VG Name vg_system LV UUID 7Mk7e9-Qifn-WBS0-jA0G-z8AF-0H6g-gyUXdS LV Write Access read/write LV snapshot status active destination for /dev/vg_system/encrypted LV Status available # open 0 LV Size 32.00 GB Current LE 8192 COW-table size 5.00 GB COW-table LE 1280 Allocated to snapshot 0.00% Snapshot chunk size 4.00 KB Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:25 3. try to remove willie:~ # lvremove /dev/vg_system/test-snap Can't remove open logical volume "test-snap" willie:~ # lvremove /dev/vg_system/test-snap Can't remove open logical volume "test-snap" willie:~ # lvremove /dev/vg_system/test-snap Can't remove open logical volume "test-snap" willie:~ # lvremove /dev/vg_system/test-snap Can't remove open logical volume "test-snap" willie:~ # lvremove /dev/vg_system/test-snap Can't remove open logical volume "test-snap" willie:~ # lvremove /dev/vg_system/test-snap Can't remove open logical volume "test-snap" willie:~ # lvremove /dev/vg_system/test-snap Can't remove open logical volume "test-snap" willie:~ # lvremove /dev/vg_system/test-snap Can't remove open logical volume "test-snap" willie:~ # lvremove /dev/vg_system/test-snap Do you really want to remove active logical volume "test-snap"? [y/n]: y Logical volume "test-snap" successfully removed -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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bugzilla_noreply＠novell.com

23 Feb 23 Feb

08:50

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

http://bugzilla.novell.com/show_bug.cgi?id=581590 http://bugzilla.novell.com/show_bug.cgi?id=581590#c yang xiaoyu changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |xyyang@novell.com AssignedTo|bnc-team-screening@forge.pr |xwhu@novell.com |ovo.novell.com | -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

22 Sep 22 Sep

08:55

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c1 Stefan Kuehne changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kuehne.stefan@gmx.de --- Comment #1 from Stefan Kuehne 2010-09-22 08:55:16 UTC --- Hi, same behaviour on OpenSUSE 11.3. (We didn't use 11.2. The error didn't occur in 11.1) We use snapshots to backup Xen-DomU's, so a patch would be desirable. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

23 Sep 23 Sep

02:44

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c2 Xinwei Hu changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO InfoProvider| |kuehne.stefan@gmx.de --- Comment #2 from Xinwei Hu 2010-09-23 02:44:15 UTC --- (In reply to comment #1)

...

Hi,

same behaviour on OpenSUSE 11.3. (We didn't use 11.2. The error didn't occur in 11.1) We use snapshots to backup Xen-DomU's, so a patch would be desirable.

Hi, I tried once to reproduce this on my machine, but failed. Could you provide me a step-by-step instruction on how to reproduce this ? Thanks. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

07:38

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c3 --- Comment #3 from Stefan Kuehne 2010-09-23 07:38:36 UTC --- Hi, thanks for help. I also tried to reproduce the error in a test environment, but this fails. In our productive environment the error occur unsteady. Since last week we use 11.3 on one server. The migration of other servers is in planning. We do the following: We have some physical server with Xen paravirtualized machines. These DomUs have partitions mounted like this: disk = [ 'phy:/dev/system/helios-dns_root,hda1,w', 'phy:/dev/system/helios-dns_swap,hdb1,w'] We backup the DomUs with the following procedure: 1. Shutdown the DomU xm shutdown -w ${DomU} 2. Create a snapshot lvcreate --snapshot --size 2000M --name ${Partition}.backup ${Partition} 3. Start the DomU xm start ${DomU} 4. Mount the snapshot 5. Create a tar archive of the mounted snapshot 6. Remove the snapshot lvremove -f ${Partition}.backup Since yesterday our backup script use a workaround (he tries to remove the snapshot up to 20 times :-). I will do some more testing and will wait until we migrate the other servers. Maybe the error depends on the server. If i have new informations, i will send a comment... regards Stefan -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

12:05

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c4 Stefan Kuehne changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW InfoProvider|kuehne.stefan@gmx.de | --- Comment #4 from Stefan Kuehne 2010-09-23 12:05:14 UTC --- It depends from the server. I can reproduce the error only on one of two servers. Redhat has the same problem: https://bugzilla.redhat.com/show_bug.cgi?id=577798 When i stop boot.udev the problem doesn't occur. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

24 Sep 24 Sep

03:19

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c5 Xinwei Hu changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO InfoProvider| |kuehne.stefan@gmx.de --- Comment #5 from Xinwei Hu 2010-09-24 03:19:22 UTC --- Hi Stefan, This is very helpful info. Could you try to """ grep -r watch /etc/udev/rules.d/ /lib/udev/rules.d/ """ and see if there's a 80-udisks.rules ? If yes, could you delete it and retest ? Thanks. (In reply to comment #4)

...

It depends from the server. I can reproduce the error only on one of two servers.

Redhat has the same problem: https://bugzilla.redhat.com/show_bug.cgi?id=577798

When i stop boot.udev the problem doesn't occur.

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bugzilla_noreply＠novell.com

07:39

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c6 Stefan Kuehne changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW InfoProvider|kuehne.stefan@gmx.de | --- Comment #6 from Stefan Kuehne 2010-09-24 07:39:52 UTC --- Hi Wei Hu, i found the file /lib/udev/rules.d/80-udisks.rules. If i move it away and restart /etc/init.d/boot.udev , the error occurs anyway. If i move some other rules (1*) away, then lvcreate hangs. regards Stefan -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

07:45

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c7 --- Comment #7 from Xinwei Hu 2010-09-24 07:45:12 UTC --- (In reply to comment #6)

...

Hi Wei Hu,

i found the file /lib/udev/rules.d/80-udisks.rules. If i move it away and restart /etc/init.d/boot.udev , the error occurs anyway.

Can you move the 80-udisks.rules to where it was, and comment out following line """ KERNEL=="dm-*", OPTIONS+="watch" """ I see someone reports that worked for them.

...

If i move some other rules (1*) away, then lvcreate hangs.

10-dm.rules 11-dm-lvm.rules 13-dm-disk.rules These 3 files are critical for lvm2 to working properly on 11.3 You should not remove any of them. Thanks --- Comment #8 from Xinwei Hu 2010-09-24 07:45:13 UTC --- (In reply to comment #6)

...

Hi Wei Hu,

i found the file /lib/udev/rules.d/80-udisks.rules. If i move it away and restart /etc/init.d/boot.udev , the error occurs anyway.

Can you move the 80-udisks.rules to where it was, and comment out following line """ KERNEL=="dm-*", OPTIONS+="watch" """ I see someone reports that worked for them.

...

If i move some other rules (1*) away, then lvcreate hangs.

10-dm.rules 11-dm-lvm.rules 13-dm-disk.rules These 3 files are critical for lvm2 to working properly on 11.3 You should not remove any of them. Thanks -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

07:45

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c7 --- Comment #7 from Xinwei Hu 2010-09-24 07:45:12 UTC --- (In reply to comment #6)

...

Hi Wei Hu,

i found the file /lib/udev/rules.d/80-udisks.rules. If i move it away and restart /etc/init.d/boot.udev , the error occurs anyway.

Can you move the 80-udisks.rules to where it was, and comment out following line """ KERNEL=="dm-*", OPTIONS+="watch" """ I see someone reports that worked for them.

...

If i move some other rules (1*) away, then lvcreate hangs.

...

Hi Wei Hu,

i found the file /lib/udev/rules.d/80-udisks.rules. If i move it away and restart /etc/init.d/boot.udev , the error occurs anyway.

Can you move the 80-udisks.rules to where it was, and comment out following line """ KERNEL=="dm-*", OPTIONS+="watch" """ I see someone reports that worked for them.

...

If i move some other rules (1*) away, then lvcreate hangs.

bugzilla_noreply＠novell.com

07:55

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c9 --- Comment #9 from Stefan Kuehne 2010-09-24 07:55:18 UTC --- No change in behaviour. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

08:43

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c10 --- Comment #10 from Xinwei Hu 2010-09-24 08:43:04 UTC --- (In reply to comment #9)

...

No change in behaviour.

So, by running """ grep -r watch /etc/udev/rules.d/ /lib/udev/rules.d/ """ Do you find any other rules watching on device-mapper devices ? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

13:06

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c11 --- Comment #11 from Stefan Kuehne 2010-09-24 13:06:33 UTC --- keto-0:~ # grep -r watch /etc/udev/rules.d/ /lib/udev/rules.d/ /lib/udev/rules.d/80-udisks.rules:KERNEL=="dm-*", OPTIONS+="watch" /lib/udev/rules.d/60-persistent-storage.rules:# watch for future changes /lib/udev/rules.d/60-persistent-storage.rules:KERNEL!="sr*", OPTIONS+="watch" /lib/udev/rules.d/13-dm-disk.rules:OPTIONS+="watch" -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

13:13

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c12 --- Comment #12 from Stefan Kuehne 2010-09-24 13:13:10 UTC --- if i comment out the lines in 80-udisks.rules and 13-dm-disk.rules, then the error doesn't occur. :-) Is this a possible workaround? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

26 Sep 26 Sep

06:39

New subject: [Bug 581590] lvm2 lvremove on snapshots works only sometimes

https://bugzilla.novell.com/show_bug.cgi?id=581590 https://bugzilla.novell.com/show_bug.cgi?id=581590#c13 Xinwei Hu changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |CLOSED Resolution| |UPSTREAM --- Comment #13 from Xinwei Hu 2010-09-26 06:39:11 UTC --- (In reply to comment #12)

...

if i comment out the lines in 80-udisks.rules and 13-dm-disk.rules, then the error doesn't occur. :-)

Is this a possible workaround?

Good to know ;) Yes, I think this can be a workaround. It's always a problem for device mapper to interact with udev watch. We are going to follow upstream to resolve this issue. Thanks for testing this. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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[Bug 581590] New: lvm2 lvremove on snapshots works only sometimes

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