deadlock during lvm snapshot
Bug #1645636 reported by
Tomaz Beltram
This bug affects 9 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
lvm2 (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
I'm doing backup of a running mongodb using LVM snapshot. Sometimes I
run into a deadlock situation and kernel reports blocked tasks for jbd2,
mongod, dmeventd and my tar doing backup.
This happens very rarely (one in a thousand) but the effect is rather
severe as mongodb stops working. I also can't remove and unmount the
snapshot.
I have Ubuntu 16.04.1 (lvm2 2.02.133-1ubuntu10) with mongod 3.2.9 on a
64bit system.
According to the link below its a kernel race with considerably decreased chance in latest lvm2 package.
https:/
description: | updated |
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Status changed to 'Confirmed' because the bug affects multiple users.