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[Qemu-devel] [Bug 1359394] Re: virtio block device hangs after "virtio_b
From: |
Slava Pestov |
Subject: |
[Qemu-devel] [Bug 1359394] Re: virtio block device hangs after "virtio_blk virtio3: requests:id 0 is not a head!" |
Date: |
Thu, 28 Aug 2014 22:09:11 -0000 |
You mean a kernel stack trace when the message was printed? I don't have
that but I guess I could add a dump_stack() call in there.
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https://bugs.launchpad.net/bugs/1359394
Title:
virtio block device hangs after "virtio_blk virtio3: requests:id 0 is
not a head!"
Status in QEMU:
New
Bug description:
The virtual machine is running block layer workloads, interrupted by
unclean reboots (echo b > /proc/sysrq-trigger). Kernel version is
3.14.
Sometimes, I get this message on boot:
"virtio_blk virtio3: requests:id 0 is not a head!"
Then, I/O to the virtio block devices just hangs.
Unfortunately I don't have a test case and this is kind of hard to
reproduce, but it seems related to having I/O in flight when the
kernel is forced to reboot.
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- [Qemu-devel] [PATCH v2 0/8] target-i386: x87 exception pointers using TCG., Jaume Marti Farriol, 2014/08/28
- [Qemu-devel] [PATCH v2 1/8] target-i386: x87 exception pointers using TCG., Jaume Marti Farriol, 2014/08/28
- [Qemu-devel] [PATCH v2 2/8] target-i386: x87 exception pointers using TCG., Jaume Marti Farriol, 2014/08/28
- [Qemu-devel] [PATCH v2 3/8] target-i386: x87 exception pointers using TCG., Jaume Marti Farriol, 2014/08/28
- [Qemu-devel] [PATCH v2 4/8] target-i386: x87 exception pointers using TCG., Jaume Marti Farriol, 2014/08/28
- [Qemu-devel] [PATCH v2 5/8] target-i386: x87 exception pointers using TCG., Jaume Marti Farriol, 2014/08/28
- [Qemu-devel] [PATCH v2 6/8] target-i386: x87 exception pointers using TCG., Jaume Marti Farriol, 2014/08/28
- [Qemu-devel] [PATCH v2 7/8] target-i386: x87 exception pointers using TCG., Jaume Marti Farriol, 2014/08/28
- [Qemu-devel] [PATCH v2 8/8] target-i386: x87 exception pointers using TCG., Jaume Marti Farriol, 2014/08/28