867009 – segfault in dmeventd, lvremove, vgreduce when removing part of an LV on a missing PV with issue_discards enabled

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Bug 867009 - segfault in dmeventd, lvremove, vgreduce when removing part of an LV on a missing PV with issue_discards enabled

Summary: segfault in dmeventd, lvremove, vgreduce when removing part of an LV on a mis...

Keywords:
Status:	CLOSED ERRATA
Alias:	None
Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	lvm2
Sub Component:
Version:	6.3
Hardware:	x86_64
OS:	Linux
Priority:	high
Severity:	high
Target Milestone:	rc
Target Release:	---
Assignee:	LVM and device-mapper development team
QA Contact:	Cluster QE
Docs Contact:
URL:
Whiteboard:
Depends On:	857554
Blocks:
TreeView+	depends on / blocked

Reported:	2012-10-16 14:27 UTC by RHEL Program Management
Modified:	2012-10-23 11:30 UTC (History)
CC List:	13 users (show)
Fixed In Version:	lvm2-2.02.95-10.el6_3.2
Doc Type:	Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed:	2012-10-23 11:30:10 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2012:1399	0	normal	SHIPPED_LIVE	lvm2 bug fix update	2012-10-23 15:27:47 UTC

Description RHEL Program Management 2012-10-16 14:27:21 UTC

This bug has been copied from bug #857554 and has been proposed
to be backported to 6.3 z-stream (EUS).

Comment 5 Corey Marthaler 2012-10-18 21:12:26 UTC

The device failure regression test (helter_skelter) that found this regression now passes with discards turned on. Marking Verified.

lvm2-2.02.95-10.el6_3.2    BUILT: Tue Oct 16 10:56:31 CDT 2012
lvm2-libs-2.02.95-10.el6_3.2    BUILT: Tue Oct 16 10:56:31 CDT 2012
lvm2-cluster-2.02.95-10.el6_3.2    BUILT: Tue Oct 16 10:56:31 CDT 2012
udev-147-2.41.el6    BUILT: Thu Mar  1 13:01:08 CST 2012
device-mapper-1.02.74-10.el6_3.2    BUILT: Tue Oct 16 10:56:31 CDT 2012
device-mapper-libs-1.02.74-10.el6_3.2    BUILT: Tue Oct 16 10:56:31 CDT 2012
device-mapper-event-1.02.74-10.el6_3.2    BUILT: Tue Oct 16 10:56:31 CDT 2012
device-mapper-event-libs-1.02.74-10.el6_3.2    BUILT: Tue Oct 16 10:56:31 CDT 2012
cmirror-2.02.95-10.el6_3.2    BUILT: Tue Oct 16 10:56:31 CDT 2012


[root@taft-04 ~]# pvscan
  PV /dev/sdb1   VG test   lvm2 [135.66 GiB / 135.66 GiB free]
  PV /dev/sdc1   VG test   lvm2 [135.66 GiB / 135.66 GiB free]
  PV /dev/sdd1   VG test   lvm2 [135.66 GiB / 135.66 GiB free]

[root@taft-04 ~]# lvcreate -m 1 -n mirror -L 100M test
  Logical volume "mirror" created
[root@taft-04 ~]# lvs -a -o +devices
  LV                VG     Attr     LSize   Log         Copy%  Devices
  mirror            test   mwi-a-m- 100.00m mirror_mlog 100.00 mirror_mimage_0(0),mirror_mimage_1(0)
  [mirror_mimage_0] test   iwi-aom- 100.00m                    /dev/sdb1(0)
  [mirror_mimage_1] test   iwi-aom- 100.00m                    /dev/sdc1(0)
  [mirror_mlog]     test   lwi-aom-   4.00m                    /dev/sdd1(0)

[root@taft-04 ~]# echo offline > /sys/block/sdc/device/state
[root@taft-04 ~]# lvs -a -o +devices
  /dev/sdc1: read failed after 0 of 512 at 145669554176: Input/output error
  [...]
  /dev/sdc1: read failed after 0 of 2048 at 0: Input/output error
  Couldn't find device with uuid EKRAen-O2ge-ObPq-WjyK-c8P4-lcd9-guKeZD.
  LV                VG     Attr     LSize   Log         Copy%  Devices
  mirror            test   mwi-a-m- 100.00m mirror_mlog 100.00 mirror_mimage_0(0),mirror_mimage_1(0)
  [mirror_mimage_0] test   iwi-aom- 100.00m                    /dev/sdb1(0)
  [mirror_mimage_1] test   iwi-aom- 100.00m                    unknown device(0)
  [mirror_mlog]     test   lwi-aom-   4.00m                    /dev/sdd1(0)

[root@taft-04 ~]# vgreduce --removemissing --force test
  /dev/sdc1: read failed after 0 of 512 at 145669554176: Input/output error
  [...]
  /dev/sdc1: read failed after 0 of 2048 at 0: Input/output error
  Couldn't find device with uuid EKRAen-O2ge-ObPq-WjyK-c8P4-lcd9-guKeZD.
  Wrote out consistent volume group test

Comment 7 errata-xmlrpc 2012-10-23 11:30:10 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2012-1399.html

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