[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] question: qemu will crash when attach and detach a disk whi
From: |
WangJie (Captain) |
Subject: |
[Qemu-devel] question: qemu will crash when attach and detach a disk which configured qos for a while |
Date: |
Mon, 11 Sep 2017 09:24:23 +0800 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 |
Hi, I maybe find a bug about qemu-kvm(version:2.8.1.1)
*Segmentation fault info:*
Program received signal SIGSEGV, Segmentation fault.
0x00007f5469220607 in blk_has_pending_reqs (blk=0x7f54672a0032, is_write=false)
at block/throttle-groups.c:184
184 return blkp->pending_reqs[is_write];
(gdb) bt
#0 0x00007f5469220607 in blk_has_pending_reqs (blk=0x7f54672a0032,
is_write=false) at block/throttle-groups.c:184
#1 0x00007f54692206a8 in next_throttle_token (blk=0x7f546b6cd120,
is_write=false) at block/throttle-groups.c:207
#2 0x00007f5469220984 in throttle_group_co_io_limits_intercept
(blk=0x7f546b6cd120, bytes=512, is_write=false)
at block/throttle-groups.c:322
#3 0x00007f546920bc79 in blk_co_preadv (blk=0x7f546b6cd120, offset=0,
bytes=512, qiov=0x7ffcc7355060, flags=0)
at block/block-backend.c:815
#4 0x00007f546920bddf in blk_read_entry (opaque=0x7ffcc7355080) at
block/block-backend.c:865
#5 0x00007f54692a00f0 in coroutine_trampoline (i0=-588050448, i1=32595) at
util/coroutine-ucontext.c:79
#6 0x00007f5466f34cf0 in ?? () from /lib64/libc.so.6
#7 0x00007f53f27fa9e0 in ?? ()
#8 0x0000000000000000 in ?? ()
the way how to find the bug as follows:
*1、attach and detach a disk for a while,the configure of the disk as follows*
<disk device="disk" type="file">
<driver cache="none" io="native" name="qemu" type="raw" />
<source file="/mnt/sdb/wangjie-kvm/core/fk8b42zr-oz" />
<target bus="virtio" dev="vdb" />
<iotune>
<read_iops_sec>3000</read_iops_sec>
<write_iops_sec>3000</write_iops_sec>
<read_bytes_sec>120000000</read_bytes_sec>
<write_bytes_sec>120000000</write_bytes_sec>
</iotune>
</disk>
*2、run below script for a while,the qemu process of VM will crash*
ret=1
while [ $ret -ne 0 ]; do
virsh attach-device i-clone203_rhel_7.3_64_guestosdev add-1.xml
sleep 2
virsh detach-device i-clone203_rhel_7.3_64_guestosdev add-1.xml
done
- [Qemu-devel] question: qemu will crash when attach and detach a disk which configured qos for a while,
WangJie (Captain) <=