Combining direct_io and non-direct_io leads to hang
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
QEMU |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
Version 0.12.2 - I know this isn't the latest but I looked through the changelogs and couldn't find any references to this being fixed.
This is related to issues that many apps have, and is described in more detail here:
http://
and:
https:/
When using both direct io and buffered io on the same file, you can cause corruption on the filesystem and other issues.
XFS out right hangs, but the problem exists on ext3 and other filesystems which silently carry on.
**this is a data corruption issue**.
This is the full stack trace we got from a recent hang:
Feb 22 19:55:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:55:14 virt11 kernel: "echo 0 > /proc/sys/
Feb 22 19:55:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:55:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:55:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:55:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:55:14 virt11 kernel: Call Trace:
Feb 22 19:55:14 virt11 kernel: [<ffffffff81057
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dd
Feb 22 19:55:14 virt11 kernel: [<ffffffff8126e
Feb 22 19:55:14 virt11 kernel: [<ffffffff814dc
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0332
Feb 22 19:55:14 virt11 kernel: [<ffffffffa033a
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354
Feb 22 19:55:14 virt11 kernel: [<ffffffff811ac
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0354
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0353
Feb 22 19:55:14 virt11 kernel: [<ffffffff8106d
Feb 22 19:55:14 virt11 kernel: [<ffffffff8110d
Feb 22 19:55:14 virt11 kernel: [<ffffffffa034b
Feb 22 19:55:14 virt11 kernel: [<ffffffffa035d
Feb 22 19:55:14 virt11 kernel: [<ffffffff8105d
Feb 22 19:55:14 virt11 kernel: [<ffffffffa0359
Feb 22 19:55:14 virt11 kernel: [<ffffffff81172
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107f
Feb 22 19:55:14 virt11 kernel: [<ffffffff8108e
Feb 22 19:55:14 virt11 kernel: [<ffffffff8107f
Feb 22 19:55:14 virt11 kernel: [<ffffffff81211
Feb 22 19:55:14 virt11 kernel: [<ffffffff81205
Feb 22 19:55:14 virt11 kernel: [<ffffffff81172
Feb 22 19:55:14 virt11 kernel: [<ffffffff810d1
Feb 22 19:55:14 virt11 kernel: [<ffffffff81173
Feb 22 19:55:14 virt11 kernel: [<ffffffff8100b
Feb 22 19:57:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:57:14 virt11 kernel: "echo 0 > /proc/sys/
Feb 22 19:57:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:57:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:57:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:57:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:57:14 virt11 kernel: Call Trace:
Feb 22 19:57:14 virt11 kernel: [<ffffffff81057
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dd
Feb 22 19:57:14 virt11 kernel: [<ffffffff8126e
Feb 22 19:57:14 virt11 kernel: [<ffffffff814dc
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0332
Feb 22 19:57:14 virt11 kernel: [<ffffffffa033a
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354
Feb 22 19:57:14 virt11 kernel: [<ffffffff811ac
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0354
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0353
Feb 22 19:57:14 virt11 kernel: [<ffffffff8106d
Feb 22 19:57:14 virt11 kernel: [<ffffffff8110d
Feb 22 19:57:14 virt11 kernel: [<ffffffffa034b
Feb 22 19:57:14 virt11 kernel: [<ffffffffa035d
Feb 22 19:57:14 virt11 kernel: [<ffffffff8105d
Feb 22 19:57:14 virt11 kernel: [<ffffffffa0359
Feb 22 19:57:14 virt11 kernel: [<ffffffff81172
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107f
Feb 22 19:57:14 virt11 kernel: [<ffffffff8108e
Feb 22 19:57:14 virt11 kernel: [<ffffffff8107f
Feb 22 19:57:14 virt11 kernel: [<ffffffff81211
Feb 22 19:57:14 virt11 kernel: [<ffffffff81205
Feb 22 19:57:14 virt11 kernel: [<ffffffff81172
Feb 22 19:57:14 virt11 kernel: [<ffffffff810d1
Feb 22 19:57:14 virt11 kernel: [<ffffffff81173
Feb 22 19:57:14 virt11 kernel: [<ffffffff8100b
Feb 22 19:59:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 19:59:14 virt11 kernel: "echo 0 > /proc/sys/
Feb 22 19:59:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 19:59:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 19:59:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 19:59:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 19:59:14 virt11 kernel: Call Trace:
Feb 22 19:59:14 virt11 kernel: [<ffffffff81057
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dd
Feb 22 19:59:14 virt11 kernel: [<ffffffff8126e
Feb 22 19:59:14 virt11 kernel: [<ffffffff814dc
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0332
Feb 22 19:59:14 virt11 kernel: [<ffffffffa033a
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354
Feb 22 19:59:14 virt11 kernel: [<ffffffff811ac
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0354
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0353
Feb 22 19:59:14 virt11 kernel: [<ffffffff8106d
Feb 22 19:59:14 virt11 kernel: [<ffffffff8110d
Feb 22 19:59:14 virt11 kernel: [<ffffffffa034b
Feb 22 19:59:14 virt11 kernel: [<ffffffffa035d
Feb 22 19:59:14 virt11 kernel: [<ffffffff8105d
Feb 22 19:59:14 virt11 kernel: [<ffffffffa0359
Feb 22 19:59:14 virt11 kernel: [<ffffffff81172
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107f
Feb 22 19:59:14 virt11 kernel: [<ffffffff8108e
Feb 22 19:59:14 virt11 kernel: [<ffffffff8107f
Feb 22 19:59:14 virt11 kernel: [<ffffffff81211
Feb 22 19:59:14 virt11 kernel: [<ffffffff81205
Feb 22 19:59:14 virt11 kernel: [<ffffffff81172
Feb 22 19:59:14 virt11 kernel: [<ffffffff810d1
Feb 22 19:59:14 virt11 kernel: [<ffffffff81173
Feb 22 19:59:14 virt11 kernel: [<ffffffff8100b
Feb 22 20:01:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:01:14 virt11 kernel: "echo 0 > /proc/sys/
Feb 22 20:01:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:01:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:01:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:01:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:01:14 virt11 kernel: Call Trace:
Feb 22 20:01:14 virt11 kernel: [<ffffffff81057
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:01:14 virt11 kernel: [<ffffffff8126e
Feb 22 20:01:14 virt11 kernel: [<ffffffff814dc
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0332
Feb 22 20:01:14 virt11 kernel: [<ffffffffa033a
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:01:14 virt11 kernel: [<ffffffff811ac
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:01:14 virt11 kernel: [<ffffffff8106d
Feb 22 20:01:14 virt11 kernel: [<ffffffff8110d
Feb 22 20:01:14 virt11 kernel: [<ffffffffa034b
Feb 22 20:01:14 virt11 kernel: [<ffffffffa035d
Feb 22 20:01:14 virt11 kernel: [<ffffffff8105d
Feb 22 20:01:14 virt11 kernel: [<ffffffffa0359
Feb 22 20:01:14 virt11 kernel: [<ffffffff81172
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:01:14 virt11 kernel: [<ffffffff8108e
Feb 22 20:01:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:01:14 virt11 kernel: [<ffffffff81211
Feb 22 20:01:14 virt11 kernel: [<ffffffff81205
Feb 22 20:01:14 virt11 kernel: [<ffffffff81172
Feb 22 20:01:14 virt11 kernel: [<ffffffff810d1
Feb 22 20:01:14 virt11 kernel: [<ffffffff81173
Feb 22 20:01:14 virt11 kernel: [<ffffffff8100b
Feb 22 20:03:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:03:14 virt11 kernel: "echo 0 > /proc/sys/
Feb 22 20:03:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:03:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:03:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:03:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:03:14 virt11 kernel: Call Trace:
Feb 22 20:03:14 virt11 kernel: [<ffffffff81057
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:03:14 virt11 kernel: [<ffffffff8126e
Feb 22 20:03:14 virt11 kernel: [<ffffffff814dc
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0332
Feb 22 20:03:14 virt11 kernel: [<ffffffffa033a
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:03:14 virt11 kernel: [<ffffffff811ac
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:03:14 virt11 kernel: [<ffffffff8106d
Feb 22 20:03:14 virt11 kernel: [<ffffffff8110d
Feb 22 20:03:14 virt11 kernel: [<ffffffffa034b
Feb 22 20:03:14 virt11 kernel: [<ffffffffa035d
Feb 22 20:03:14 virt11 kernel: [<ffffffff8105d
Feb 22 20:03:14 virt11 kernel: [<ffffffffa0359
Feb 22 20:03:14 virt11 kernel: [<ffffffff81172
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:03:14 virt11 kernel: [<ffffffff8108e
Feb 22 20:03:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:03:14 virt11 kernel: [<ffffffff81211
Feb 22 20:03:14 virt11 kernel: [<ffffffff81205
Feb 22 20:03:14 virt11 kernel: [<ffffffff81172
Feb 22 20:03:14 virt11 kernel: [<ffffffff810d1
Feb 22 20:03:14 virt11 kernel: [<ffffffff81173
Feb 22 20:03:14 virt11 kernel: [<ffffffff8100b
Feb 22 20:05:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:05:14 virt11 kernel: "echo 0 > /proc/sys/
Feb 22 20:05:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:05:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:05:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:05:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:05:14 virt11 kernel: Call Trace:
Feb 22 20:05:14 virt11 kernel: [<ffffffff81057
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:05:14 virt11 kernel: [<ffffffff8126e
Feb 22 20:05:14 virt11 kernel: [<ffffffff814dc
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0332
Feb 22 20:05:14 virt11 kernel: [<ffffffffa033a
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:05:14 virt11 kernel: [<ffffffff811ac
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:05:14 virt11 kernel: [<ffffffff8106d
Feb 22 20:05:14 virt11 kernel: [<ffffffff8110d
Feb 22 20:05:14 virt11 kernel: [<ffffffffa034b
Feb 22 20:05:14 virt11 kernel: [<ffffffffa035d
Feb 22 20:05:14 virt11 kernel: [<ffffffff8105d
Feb 22 20:05:14 virt11 kernel: [<ffffffffa0359
Feb 22 20:05:14 virt11 kernel: [<ffffffff81172
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:05:14 virt11 kernel: [<ffffffff8108e
Feb 22 20:05:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:05:14 virt11 kernel: [<ffffffff81211
Feb 22 20:05:14 virt11 kernel: [<ffffffff81205
Feb 22 20:05:14 virt11 kernel: [<ffffffff81172
Feb 22 20:05:14 virt11 kernel: [<ffffffff810d1
Feb 22 20:05:14 virt11 kernel: [<ffffffff81173
Feb 22 20:05:14 virt11 kernel: [<ffffffff8100b
Feb 22 20:07:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:07:14 virt11 kernel: "echo 0 > /proc/sys/
Feb 22 20:07:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:07:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:07:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:07:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:07:14 virt11 kernel: Call Trace:
Feb 22 20:07:14 virt11 kernel: [<ffffffff81057
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:07:14 virt11 kernel: [<ffffffff8126e
Feb 22 20:07:14 virt11 kernel: [<ffffffff814dc
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0332
Feb 22 20:07:14 virt11 kernel: [<ffffffffa033a
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:07:14 virt11 kernel: [<ffffffff811ac
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:07:14 virt11 kernel: [<ffffffff8106d
Feb 22 20:07:14 virt11 kernel: [<ffffffff8110d
Feb 22 20:07:14 virt11 kernel: [<ffffffffa034b
Feb 22 20:07:14 virt11 kernel: [<ffffffffa035d
Feb 22 20:07:14 virt11 kernel: [<ffffffff8105d
Feb 22 20:07:14 virt11 kernel: [<ffffffffa0359
Feb 22 20:07:14 virt11 kernel: [<ffffffff81172
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:07:14 virt11 kernel: [<ffffffff8108e
Feb 22 20:07:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:07:14 virt11 kernel: [<ffffffff81211
Feb 22 20:07:14 virt11 kernel: [<ffffffff81205
Feb 22 20:07:14 virt11 kernel: [<ffffffff81172
Feb 22 20:07:14 virt11 kernel: [<ffffffff810d1
Feb 22 20:07:14 virt11 kernel: [<ffffffff81173
Feb 22 20:07:14 virt11 kernel: [<ffffffff8100b
Feb 22 20:09:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:09:14 virt11 kernel: "echo 0 > /proc/sys/
Feb 22 20:09:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:09:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:09:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:09:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:09:14 virt11 kernel: Call Trace:
Feb 22 20:09:14 virt11 kernel: [<ffffffff81057
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:09:14 virt11 kernel: [<ffffffff8126e
Feb 22 20:09:14 virt11 kernel: [<ffffffff814dc
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0332
Feb 22 20:09:14 virt11 kernel: [<ffffffffa033a
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:09:14 virt11 kernel: [<ffffffff811ac
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:09:14 virt11 kernel: [<ffffffff8106d
Feb 22 20:09:14 virt11 kernel: [<ffffffff8110d
Feb 22 20:09:14 virt11 kernel: [<ffffffffa034b
Feb 22 20:09:14 virt11 kernel: [<ffffffffa035d
Feb 22 20:09:14 virt11 kernel: [<ffffffff8105d
Feb 22 20:09:14 virt11 kernel: [<ffffffffa0359
Feb 22 20:09:14 virt11 kernel: [<ffffffff81172
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:09:14 virt11 kernel: [<ffffffff8108e
Feb 22 20:09:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:09:14 virt11 kernel: [<ffffffff81211
Feb 22 20:09:14 virt11 kernel: [<ffffffff81205
Feb 22 20:09:14 virt11 kernel: [<ffffffff81172
Feb 22 20:09:14 virt11 kernel: [<ffffffff810d1
Feb 22 20:09:14 virt11 kernel: [<ffffffff81173
Feb 22 20:09:14 virt11 kernel: [<ffffffff8100b
Feb 22 20:11:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:11:14 virt11 kernel: "echo 0 > /proc/sys/
Feb 22 20:11:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:11:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:11:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:11:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:11:14 virt11 kernel: Call Trace:
Feb 22 20:11:14 virt11 kernel: [<ffffffff81057
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:11:14 virt11 kernel: [<ffffffff8126e
Feb 22 20:11:14 virt11 kernel: [<ffffffff814dc
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0332
Feb 22 20:11:14 virt11 kernel: [<ffffffffa033a
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:11:14 virt11 kernel: [<ffffffff811ac
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:11:14 virt11 kernel: [<ffffffff8106d
Feb 22 20:11:14 virt11 kernel: [<ffffffff8110d
Feb 22 20:11:14 virt11 kernel: [<ffffffffa034b
Feb 22 20:11:14 virt11 kernel: [<ffffffffa035d
Feb 22 20:11:14 virt11 kernel: [<ffffffff8105d
Feb 22 20:11:14 virt11 kernel: [<ffffffffa0359
Feb 22 20:11:14 virt11 kernel: [<ffffffff81172
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:11:14 virt11 kernel: [<ffffffff8108e
Feb 22 20:11:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:11:14 virt11 kernel: [<ffffffff81211
Feb 22 20:11:14 virt11 kernel: [<ffffffff81205
Feb 22 20:11:14 virt11 kernel: [<ffffffff81172
Feb 22 20:11:14 virt11 kernel: [<ffffffff810d1
Feb 22 20:11:14 virt11 kernel: [<ffffffff81173
Feb 22 20:11:14 virt11 kernel: [<ffffffff8100b
Feb 22 20:13:14 virt11 kernel: INFO: task qemu-kvm:18360 blocked for more than 120 seconds.
Feb 22 20:13:14 virt11 kernel: "echo 0 > /proc/sys/
Feb 22 20:13:14 virt11 kernel: qemu-kvm D 0000000000000002 0 18360 1 0x00000080
Feb 22 20:13:14 virt11 kernel: ffff8808614457e8 0000000000000086 ffff8800282d5f80 ffff8800282d5f80
Feb 22 20:13:14 virt11 kernel: ffff880861445768 ffffffff810573ce ffff880861445768 0000000000000086
Feb 22 20:13:14 virt11 kernel: ffff8808f15bba78 ffff880861445fd8 000000000000f598 ffff8808f15bba78
Feb 22 20:13:14 virt11 kernel: Call Trace:
Feb 22 20:13:14 virt11 kernel: [<ffffffff81057
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dd
Feb 22 20:13:14 virt11 kernel: [<ffffffff8126e
Feb 22 20:13:14 virt11 kernel: [<ffffffff814dc
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0332
Feb 22 20:13:14 virt11 kernel: [<ffffffffa033a
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:13:14 virt11 kernel: [<ffffffff811ac
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0354
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0353
Feb 22 20:13:14 virt11 kernel: [<ffffffff8106d
Feb 22 20:13:14 virt11 kernel: [<ffffffff8110d
Feb 22 20:13:14 virt11 kernel: [<ffffffffa034b
Feb 22 20:13:14 virt11 kernel: [<ffffffffa035d
Feb 22 20:13:14 virt11 kernel: [<ffffffff8105d
Feb 22 20:13:14 virt11 kernel: [<ffffffffa0359
Feb 22 20:13:14 virt11 kernel: [<ffffffff81172
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:13:14 virt11 kernel: [<ffffffff8108e
Feb 22 20:13:14 virt11 kernel: [<ffffffff8107f
Feb 22 20:13:14 virt11 kernel: [<ffffffff81211
Feb 22 20:13:14 virt11 kernel: [<ffffffff81205
Feb 22 20:13:14 virt11 kernel: [<ffffffff81172
Feb 22 20:13:14 virt11 kernel: [<ffffffff810d1
Feb 22 20:13:14 virt11 kernel: [<ffffffff81173
Feb 22 20:13:14 virt11 kernel: [<ffffffff8100b
Changed in qemu: | |
status: | Incomplete → Won't Fix |
On Wed, Feb 22, 2012 at 09:49:59PM -0000, Avleen Vig wrote: oss.sgi. com/archives/ xfs/2010- 07/msg00163. html /bugs.launchpad .net/percona- xtrabackup/ +bug/606981
> Version 0.12.2 - I know this isn't the latest but I looked through the
> changelogs and couldn't find any references to this being fixed.
>
> This is related to issues that many apps have, and is described in more detail here:
> http://
> and:
> https:/
>
> When using both direct io and buffered io on the same file, you can cause corruption on the filesystem and other issues.
> XFS out right hangs, but the problem exists on ext3 and other filesystems which silently carry on.
>
> **this is a data corruption issue**.
>
> This is the full stack trace we got from a recent hang:
I only see qemu-kvm in the backtrace. QEMU normally only access the
image file either with or without O_DIRECT - not both at the same time.
Were you running another program that accesses the image file at the
same time?
Stefan