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Re: [Qemu-devel] [Bug 902148] [NEW] qemu-img V1.0 hangs on creating Imag
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [Bug 902148] [NEW] qemu-img V1.0 hangs on creating Image (0.15.1 runs) |
Date: |
Mon, 12 Dec 2011 10:09:29 +0000 |
On Fri, Dec 9, 2011 at 1:10 PM, Michael Niehren
<address@hidden> wrote:
> Strace on the hanging qemu-img ends on:
>
> select(5, [4], [], NULL, NULL) = 1 (in [4])
> read(4, "\0", 16) = 1
> close(3) = 0
> open("test.img", O_RDONLY|O_NONBLOCK) = 3
> fstat(3, {st_mode=S_IFREG|0644, st_size=131072, ...}) = 0
> close(3) = 0
> open("test.img", O_RDONLY|O_NONBLOCK) = 3
> fstat(3, {st_mode=S_IFREG|0644, st_size=131072, ...}) = 0
> close(3) = 0
> stat("test.img", {st_mode=S_IFREG|0644, st_size=131072, ...}) = 0
> open("test.img", O_RDWR|O_CLOEXEC) = 3
> lseek(3, 0, SEEK_END) = 131072
>
> next line in the strace on working qemu-img V0.15.1 is:
> pread(3,
> "QFI\373\0\0\0\2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\20\0\0\0\0\0\0\0\0"..., 512,
> 0) = 512
> ...
When it hangs does it consume CPU?
Please attach gdb to the process and capture a backtrace:
$ gdb -p $PID_OF_QEMU
(gdb) thread apply all bt
Stefan
- [Qemu-devel] [PATCH v2 0/9] various ARM fixes, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 4/9] arm: add dummy gic security registers, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 2/9] arm: Set frequencies for arm_timer, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH 5/9] ahci: convert ahci_reset to use AHCIState, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 1/9] arm: add missing scu registers, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH 9/9] arm: increase a9mp interrupts to 160, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 3/9] arm: add dummy v7 cp15 config_base_register, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 8/9] Add xgmac ethernet model, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH 6/9] ahci: add support for non-PCI based controllers, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 7/9] add L2x0/PL310 cache controller device, Mark Langsdorf, 2011/12/22