Hi,
Just to add:
If I add libiscsi to the Ubuntu 12.04 build of qemu-kvm, the same scenario
happens as below.
Regards,
Josef
----- Original Message -----
From: "Josef Johansson"<address@hidden>
To: address@hidden
Sent: Wednesday, June 13, 2012 7:27:39 AM
Subject: [Qemu-discuss] kvm instance hangs at boot while starting with iSCSI
Hi,
I'm trying out QEMU 1.0 from debian sid, running this on the Ubuntu distro.
While starting with iSCSI, it hangs with 100% CPU-usage.
backtrace
--
(gdb) backtrace
#0 0x00007f835425ed27 in ioctl () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f8357ea489c in iscsi_service () from
/usr/lib/x86_64-linux-gnu/libiscsi.so.1
#2 0x00007f835885a521 in iscsi_process_read (arg=<optimized out>) at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/block/iscsi.c:120
#3 0x00007f8358844832 in qemu_aio_wait () at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/aio.c:210
#4 0x00007f835885a99d in iscsi_open (bs=0x7f835a46d700, filename=0x7f835a457ea0
"iscsi://[2a01:2b0:301d:102::3]:3260/iqn.2010-08.se.ilait.storage1-2.pool10-images/10",
flags=<optimized out>)
at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/block/iscsi.c:536
#5 0x00007f8358853505 in bdrv_open_common (bs=0x7f835a46d700, filename=0x7f835a457ea0
"iscsi://[2a01:2b0:301d:102::3]:3260/iqn.2010-08.se.ilait.storage1-2.pool10-images/10",
flags=<optimized out>,
drv=0x7f8358d82540) at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/block.c:510
#6 0x00007f8358853686 in bdrv_file_open (pbs=0x7f835a46d5f8, filename=0x7f835a457ea0
"iscsi://[2a01:2b0:301d:102::3]:3260/iqn.2010-08.se.ilait.storage1-2.pool10-images/10",
flags=226)
at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/block.c:560
#7 0x00007f83588535f9 in bdrv_open_common (bs=0x7f835a46cd90, filename=0x7f835a457ea0
"iscsi://[2a01:2b0:301d:102::3]:3260/iqn.2010-08.se.ilait.storage1-2.pool10-images/10",
flags=<optimized out>,
drv=0x7f8358d83820) at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/block.c:512
#8 0x00007f8358854207 in bdrv_open (bs=0x7f835a46cd90, filename=0x7f835a457ea0
"iscsi://[2a01:2b0:301d:102::3]:3260/iqn.2010-08.se.ilait.storage1-2.pool10-images/10",
flags=226, drv=<optimized out>)
at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/block.c:644
#9 0x00007f8358877926 in drive_init (opts=<optimized out>,
default_to_scsi=<optimized out>) at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/blockdev.c:536
#10 0x00007f83588d5d4b in drive_init_func (opts=<optimized out>, opaque=<optimized
out>) at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/vl.c:766
#11 0x00007f83588f6d72 in qemu_opts_foreach (list=<optimized out>,
func=0x7f83588d5d40<drive_init_func>, opaque=0x7f8358da97a0, abort_on_failure=<optimized
out>)
at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/qemu-option.c:1002
#12 0x00007f835883edb7 in main (argc=<optimized out>, argv=<optimized out>,
envp=<optimized out>) at
/build/josef-qemu-kvm_1.0+precise-ilait-amd64-12-amd64-HPZ0Ib/qemu-kvm-1.0+precise-ilait-amd64/vl.c:3305
--
I'm running kvm with
kvm -name xxxxx -m 1024 -smp threads=1 -M pc -vnc
[xxxx:xxxx:xxxx:xxxx::xx:xxxx]:0 -k sv -qmp
tcp:xxx.xxx.xxx:4444,server,wait=off -vga std -rtc base=localtime -uuid
20ab0a40-c01c-012e-e943-52540033c845 -daemonize -enable-kvm -nodefconfig
-nodefaults -usb -device usb-tablet,id=input0 -device
virtio-net-pci,addr=0x1f,netdev=n584.1003811,mac=54:52:00:01:88:1D -netdev
tap,id=n584.1003811,ifname=584.1003811 -drive
file=iscsi://[xxxx:xxxx:xxxx::3]:3260/iqn.2010-08.xx.xxx.xxxxxxx.pool10-images/10,if=none,id=drive-virtio-disk0,boot=on,cache=none,aio=native,format=raw
-device virtio-blk-pci,drive=drive-virtio-disk0,id=virtio-disk0
Is there any thing I could try to fix this?
Regards,
Josef