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Diffstat (limited to 'results/classifier/105/other/1434779')
| -rw-r--r-- | results/classifier/105/other/1434779 | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/results/classifier/105/other/1434779 b/results/classifier/105/other/1434779 new file mode 100644 index 00000000..29e2f483 --- /dev/null +++ b/results/classifier/105/other/1434779 @@ -0,0 +1,130 @@ +other: 0.980 +assembly: 0.976 +device: 0.972 +mistranslation: 0.971 +socket: 0.971 +semantic: 0.970 +vnc: 0.969 +graphic: 0.968 +boot: 0.967 +instruction: 0.963 +network: 0.948 +KVM: 0.932 + +qemu hangs on live-migration with storage(virtual machine: windows Server 2008 with only one disk ) + +Hi, +We are using “Windows Server 2008” with qemu-kvm-2.0.1 (linux kernel:3.10.0) as a host of a VM. +Using drive_mirror to do live-migration on the same host for different disks +Local disk: /sf/data/local/ +Shared disk(iscsi): /sf/other/local/ --- the disk is busy, the IO rate is about 30MB/s +qemu-system-x86_64 -k en-us -m 2048 -smp 2 -vnc :3100 -usbdevice tablet -boot c -enable-kvm -drive file=/sf/data/local/vm-disk-1.qcow2,if=none,id=drive-ide0,cache=none,aio=native -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0,bootindex=100 + +Step 1: +Start migration: Drive_mirror -f drive-ide0 /sf/other/local/test.qcow2 + +Step 2: +When detect the migration has completed, then send cmd: block_job_complete -f drive-ide0 + +Step 3: +send cmd: info status +What surprised me is that the qemu monitor reports can’t be connected. + +Then find bellows: +The qemu process hangs on the mirror_run->bdrv_drain_all->aio_poll->qemu_poll_ns->ppoll (), +None events were received and poll forever. I don’t know why the aio can’t be responsed. This case is hardly to +be generated but it really happens sometimes . I’m looking forward to getting help from you . +The stack capture snapshot: + + +Thanks +MyAngle + + + +On Sat, Mar 21, 2015 at 07:44:37AM -0000, youyunyehe wrote: +> We are using “Windows Server 2008” with qemu-kvm-2.0.1 (linux kernel:3.10.0) as a host of a VM. + +Please give the exact qemu-kvm package version and Linux distro name. +The code in qemu.git/master is slightly different so maybe the issue no +longer happens, but it would be worth looking at the exact source code +your qemu-kvm is built from. + +I have CCed Jeff Cody, who maintains drive-mirror. + +> Using drive_mirror to do live-migration on the same host for different disks +> Local disk: /sf/data/local/ +> Shared disk(iscsi): /sf/other/local/ --- the disk is busy, the IO rate is about 30MB/s +> qemu-system-x86_64 -k en-us -m 2048 -smp 2 -vnc :3100 -usbdevice tablet -boot c -enable-kvm -drive file=/sf/data/local/vm-disk-1.qcow2,if=none,id=drive-ide0,cache=none,aio=native -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0,bootindex=100 +> +> Step 1: +> Start migration: Drive_mirror -f drive-ide0 /sf/other/local/test.qcow2 +> +> Step 2: +> When detect the migration has completed, then send cmd: block_job_complete -f drive-ide0 +> +> Step 3: +> send cmd: info status +> What surprised me is that the qemu monitor reports can’t be connected. +> +> Then find bellows: +> The qemu process hangs on the mirror_run->bdrv_drain_all->aio_poll->qemu_poll_ns->ppoll (), +> None events were received and poll forever. I don’t know why the aio can’t be responsed. This case is hardly to +> be generated but it really happens sometimes . I’m looking forward to getting help from you . +> The stack capture snapshot: + + +> -----Original Message----- +> From: <email address hidden> [mailto:<email address hidden>] +> On Behalf Of Stefan Hajnoczi +> Sent: 2015年3月23日 21:32 +> To: Bug 1434779 +> Cc: <email address hidden> +> Subject: Re: [Qemu-devel] [Bug 1434779] [NEW] qemu hangs on live-migration with storage(virtual machine: windows Server 2008 +> with only one disk ) +> +> On Sat, Mar 21, 2015 at 07:44:37AM -0000, youyunyehe wrote: +> > We are using “Windows Server 2008” with qemu-kvm-2.0.1 (linux kernel:3.10.0) as a host of a VM. +> +> Please give the exact qemu-kvm package version and Linux distro name. +> The code in qemu.git/master is slightly different so maybe the issue no longer happens, but it would be worth looking at the exact +> source code your qemu-kvm is built from. + +[Halsey] I also recreated this issue today, qemu hangs at bdrv_rw-co() -> bdrv_prwv_co() -> aio_poll(0 -> qemu_poll_ns() -> ppoll(). I'm just call bdrv_write to write data to qcow2 file. My qemu version is qemu-2.2.0. + +> I have CCed Jeff Cody, who maintains drive-mirror. +> +> > Using drive_mirror to do live-migration on the same host for +> > different disks Local disk: /sf/data/local/ +> > Shared disk(iscsi): /sf/other/local/ --- the disk is busy, the IO rate is about 30MB/s +> > qemu-system-x86_64 -k en-us -m 2048 -smp 2 -vnc :3100 -usbdevice +> > tablet -boot c -enable-kvm -drive +> > file=/sf/data/local/vm-disk-1.qcow2,if=none,id=drive-ide0,cache=none,a +> > io=native -device +> > ide-hd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0,bootindex=100 +> > +> > Step 1: +> > Start migration: Drive_mirror -f drive-ide0 +> > /sf/other/local/test.qcow2 +> > +> > Step 2: +> > When detect the migration has completed, then send cmd: +> > block_job_complete -f drive-ide0 +> > +> > Step 3: +> > send cmd: info status +> > What surprised me is that the qemu monitor reports can’t be connected. +> > +> > Then find bellows: +> > The qemu process hangs on the +> > mirror_run->bdrv_drain_all->aio_poll->qemu_poll_ns->ppoll (), None +> > events were received and poll forever. I don’t know why the aio can’t be responsed. This case is hardly to be generated but it really +> happens sometimes . I’m looking forward to getting help from you . +> > The stack capture snapshot: + + + +Looking through old bug tickets... can you still reproduce this issue with the latest version of QEMU? Or could we close this ticket nowadays? + +[Expired for QEMU because there has been no activity for 60 days.] + |