It still fails with ext4:
#0 0x00007fbaa12b33f8 in raise () at /lib64/libc.so.6
#1 0x00007fbaa12b4ffa in abort () at /lib64/libc.so.6
#2 0x00007fbaa12abc17 in __assert_fail_base () at /lib64/libc.so.6
#3 0x00007fbaa12abcc2 in () at /lib64/libc.so.6
#4 0x00005646b990f926 in mirror_run (s=0x5646bc50f480) at block/mirror.c:335
next_sector = 36659200
next_chunk = 286400
nb_chunks = 80
end = 209715200
sectors_per_chunk = 128
source = 0x5646bcb70000
sector_num = 36648960
delay_ns = 0
delay_ns = 0
cnt = 15360
should_complete = <optimized out>
s = 0x5646bc50f480
data = <optimized out>
bs = 0x5646bcb70000
sector_num = <optimized out>
end = <optimized out>
length = <optimized out>
last_pause_ns = <optimized out>
bdi = {cluster_size = 65536, vm_state_offset = 107374182400, is_dirty =
false, unallocated_blocks_are_zero = true, can_write_zeroes_with_unmap = true,
needs_compressed_writes = false}
backing_filename = "\000"
ret = <optimized out>
n = 1048576
target_cluster_size = <optimized out>
__PRETTY_FUNCTION__ = "mirror_run"
#5 0x00005646b990f926 in mirror_run (opaque=0x5646bc50f480) at
block/mirror.c:613
delay_ns = 0
cnt = 15360
should_complete = <optimized out>
s = 0x5646bc50f480
data = <optimized out>
bs = 0x5646bcb70000
sector_num = <optimized out>
end = <optimized out>
length = <optimized out>
last_pause_ns = <optimized out>
bdi = {cluster_size = 65536, vm_state_offset = 107374182400, is_dirty =
false, unallocated_blocks_are_zero = true, can_write_zeroes_with_unmap = true,
needs_compressed_writes = false}
backing_filename = "\000"
ret = <optimized out>
n = 1048576
target_cluster_size = <optimized out>
__PRETTY_FUNCTION__ = "mirror_run"
#6 0x00005646b997568a in coroutine_trampoline (i0=<optimized out>,
i1=<optimized out>) at util/coroutine-ucontext.c:78
self = 0x5646bc5115b0
co = 0x5646bc5115b0
#7 0x00007fbaa12c8560 in __start_context () at /lib64/libc.so.6
#8 0x00005646bd2b98b0 in ()
#9 0x0000000000000000 in ()
qemu-system-x86_64: block/mirror.c:335: mirror_iteration: Assertion
`hbitmap_next == next_sector' failed.
I can't seem to get stable snapshotting and blockpull with a loaded VM.
Interestingly enough, the last command libvirt passes to qemu is:
2016-04-14 20:47:58.196+0000: 18932: debug : qemuMonitorJSONCommandWithFd:294 :
Send command '{"execute":"query-block-jobs","id":"libvirt-69"}' for write with
FD -1
2016-04-14 20:47:58.196+0000: 18932: info : qemuMonitorSend:1005 :
QEMU_MONITOR_SEND_MSG: mon=0x7f1874001a30
msg={"execute":"query-block-jobs","id":"libvirt-69"}
2016-04-14 20:47:58.197+0000: 18929: info : qemuMonitorIOWrite:529 :
QEMU_MONITOR_IO_WRITE: mon=0x7f1874001a30
buf={"execute":"query-block-jobs","id":"libvirt-69"}
Odd that it would SIGABRT on a smile query-block-jobs.
Even more interesting is that it crashes on the first or second or third
snapshot/block-commit cycle when using EXT4, but would sometimes go for
30-40 cycles on ZFS.
Any ideas? I'm certainly willing to test and help in any way I can.
Thanks!
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https://bugs.launchpad.net/bugs/1570134
Title:
While committing snapshot qemu crashes with SIGABRT
Status in QEMU:
New
Bug description:
Information:
OS: Slackware64-Current
Compiled with: gcc version 5.3.0 (GCC) / glibc 2.23
Compiled using:
CFLAGS="-O2 -fPIC" \
CXXFLAGS="-O2 -fPIC" \
LDFLAGS="-L/usr/lib64" \
./configure \
--prefix=/usr \
--sysconfdir=/etc \
--localstatedir=/var \
--libdir=/usr/lib64 \
--enable-spice \
--enable-kvm \
--enable-glusterfs \
--enable-libiscsi \
--enable-libusb \
--target-list=x86_64-softmmu,i386-softmmu \
--enable-debug
Source: qemu-2.5.1.tar.bz2
Running as:
/usr/bin/qemu-system-x86_64 -name test1,debug-threads=on -S -machine
pc-1.1,accel=kvm,usb=off -m 4096 -realtime mlock=off -smp
2,sockets=2,cores=1,threads=1 -uuid
4b30ec13-6609-4a56-8731-d400c38189ef -no-user-config -nodefaults
-chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-4-test1/monitor.sock,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc
base=localtime,clock=vm,driftfix=slew -global kvm-
pit.lost_tick_policy=discard -no-shutdown -boot strict=on -device
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive
file=/datastore/vm/test1/test1.img,format=qcow2,if=none,id=drive-
virtio-disk0 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive
=drive-virtio-disk0,id=virtio-disk0,bootindex=2 -drive if=none,id
=drive-ide0-1-0,readonly=on -device ide-cd,bus=ide.1,unit=0,drive
=drive-ide0-1-0,id=ide0-1-0,bootindex=1 -netdev
tap,fd=23,id=hostnet0,vhost=on,vhostfd=25 -device virtio-net
pci,netdev=hostnet0,id=net0,mac=52:54:00:66:2e:0f,bus=pci.0,addr=0x3
-vnc 0.0.0.0:0 -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -msg timestamp=on
File system: zfs v0.6.5.6
While running:
virsh blockcommit test1 vda --active --pivot --verbose
VM running very heavy IO load
GDB reporting:
#0 0x00007fd80132c3f8 in raise () at /lib64/libc.so.6
#1 0x00007fd80132dffa in abort () at /lib64/libc.so.6
#2 0x00007fd801324c17 in __assert_fail_base () at /lib64/libc.so.6
#3 0x00007fd801324cc2 in () at /lib64/libc.so.6
#4 0x000055d9918d7572 in bdrv_replace_in_backing_chain (old=0x55d993ed9c10,
new=0x55d9931ccc10) at block.c:2096
__PRETTY_FUNCTION__ = "bdrv_replace_in_backing_chain"
#5 0x000055d991911869 in mirror_exit (job=0x55d993fef830,
opaque=0x55d999bbefe0) at block/mirror.c:376
to_replace = 0x55d993ed9c10
s = 0x55d993fef830
data = 0x55d999bbefe0
replace_aio_context = <optimized out>
src = 0x55d993ed9c10
#6 0x000055d9918da1dc in block_job_defer_to_main_loop_bh
(opaque=0x55d9940ce850) at blockjob.c:481
data = 0x55d9940ce850
aio_context = 0x55d9931a2610
#7 0x000055d9918d014b in aio_bh_poll (ctx=ctx@entry=0x55d9931a2610) at
async.c:92
bh = <optimized out>
bhp = <optimized out>
next = 0x55d99440f910
ret = 1
#8 0x000055d9918dc8c0 in aio_dispatch (ctx=0x55d9931a2610) at aio-posix.c:305
node = <optimized out>
progress = false
#9 0x000055d9918d000e in aio_ctx_dispatch (source=<optimized out>,
callback=<optimized out>, user_data=<optimized out>) at async.c:231
ctx = <optimized out>
#10 0x00007fd8037cf787 in g_main_context_dispatch () at
/usr/lib64/libglib-2.0.so.0
#11 0x000055d9918db03b in main_loop_wait () at main-loop.c:211
context = 0x55d9931a3200
pfds = <optimized out>
ret = 0
spin_counter = 1
ret = 0
timeout = 4294967295
timeout_ns = <optimized out>
#12 0x000055d9918db03b in main_loop_wait (timeout=<optimized out>) at
main-loop.c:256
ret = 0
spin_counter = 1
ret = 0
timeout = 4294967295
timeout_ns = <optimized out>
#13 0x000055d9918db03b in main_loop_wait (nonblocking=<optimized out>) at
main-loop.c:504
ret = 0
timeout = 4294967295
timeout_ns = <optimized out>
#14 0x000055d991679cc4 in main () at vl.c:1923
nonblocking = <optimized out>
last_io = 2
i = <optimized out>
snapshot = <optimized out>
linux_boot = <optimized out>
initrd_filename = <optimized out>
kernel_filename = <optimized out>
kernel_cmdline = <optimized out>
boot_order = <optimized out>
boot_once = <optimized out>
ds = <optimized out>
cyls = <optimized out>
heads = <optimized out>
secs = <optimized out>
translation = <optimized out>
hda_opts = <optimized out>
opts = <optimized out>
machine_opts = <optimized out>
icount_opts = <optimized out>
olist = <optimized out>
optind = 49
optarg = 0x7fffc6d27f43 "timestamp=on"
loadvm = <optimized out>
machine_class = 0x55d993194d10
cpu_model = <optimized out>
vga_model = 0x0
qtest_chrdev = <optimized out>
qtest_log = <optimized out>
pid_file = <optimized out>
incoming = <optimized out>
defconfig = <optimized out>
userconfig = false
log_mask = <optimized out>
log_file = <optimized out>
trace_events = <optimized out>
trace_file = <optimized out>
maxram_size = <optimized out>
ram_slots = <optimized out>
vmstate_dump_file = <optimized out>
main_loop_err = 0x0
err = 0x0
__func__ = "main"
#15 0x000055d991679cc4 in main (argc=<optimized out>, argv=<optimized out>,
envp=<optimized out>) at vl.c:4699
i = <optimized out>
snapshot = <optimized out>
linux_boot = <optimized out>
initrd_filename = <optimized out>
kernel_filename = <optimized out>
kernel_cmdline = <optimized out>
boot_order = <optimized out>
boot_once = <optimized out>
ds = <optimized out>
cyls = <optimized out>
heads = <optimized out>
secs = <optimized out>
translation = <optimized out>
hda_opts = <optimized out>
opts = <optimized out>
machine_opts = <optimized out>
icount_opts = <optimized out>
olist = <optimized out>
optind = 49
optarg = 0x7fffc6d27f43 "timestamp=on"
loadvm = <optimized out>
machine_class = 0x55d993194d10
cpu_model = <optimized out>
vga_model = 0x0
qtest_chrdev = <optimized out>
qtest_log = <optimized out>
pid_file = <optimized out>
incoming = <optimized out>
defconfig = <optimized out>
userconfig = false
log_mask = <optimized out>
log_file = <optimized out>
trace_events = <optimized out>
trace_file = <optimized out>
maxram_size = <optimized out>
ram_slots = <optimized out>
vmstate_dump_file = <optimized out>
main_loop_err = 0x0
err = 0x0
__func__ = "main"
I can reproduce this at will, and can provide more information per a
dev's request.
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