Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Wed, Apr 18, 2018 at 4:44 PM, Fam Zheng wrote: > > qemu-img hangs because the convert_iteration_sectors loop cannot make any > progress when it reaches the end of the base image. It is a bug (implicitly?) > fixed by Eric Blake (Cc'ed) 's BDRV_BLOCK_EOF patches on upstream,

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Wed, 04/18 15:58, Fam Zheng wrote: > On Wed, 04/18 15:42, David Lee wrote: > > On Thu, Apr 12, 2018 at 11:57 PM, David Lee wrote: > > >>> > > >>> We tested qemu-kvm-ev-2.9.0-16.el7_4.14.1 - where from the source RPM we > > >>> verified it does contain

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Wed, 04/18 15:42, David Lee wrote: > On Thu, Apr 12, 2018 at 11:57 PM, David Lee wrote: > >>> > >>> We tested qemu-kvm-ev-2.9.0-16.el7_4.14.1 - where from the source RPM we > >>> verified it does contain ef6dada8b44e1e7c4bec5c1115903af9af415b50 > >>> > >>> But the issue

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Thu, Apr 12, 2018 at 11:57 PM, David Lee wrote: >>> >>> We tested qemu-kvm-ev-2.9.0-16.el7_4.14.1 - where from the source RPM we >>> verified it does contain ef6dada8b44e1e7c4bec5c1115903af9af415b50 >>> >>> But the issue still exists. The convert got stuck if one of the

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Mon, Apr 09, 2018 at 10:38:54AM +0300, Benny Zlotnik wrote: > source: qcow2 on NFS > target: raw on NFS Have you tried on a local file system with the same source file contents? Which NFS protocol version is being used? Stefan signature.asc Description: PGP signature

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Thu, Apr 12, 2018 at 10:23 PM, Fam Zheng wrote: > On Thu, 04/12 21:45, David Lee wrote: >> On Thu, Apr 12, 2018 at 10:16 AM, David Lee wrote: >> >> > My team caught this issue too after switching to CentOS 7.4 with >> >> > qemu-img >> >> > 2.9.0 >> >> >

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Thu, 04/12 21:45, David Lee wrote: > On Thu, Apr 12, 2018 at 10:16 AM, David Lee wrote: > >> > My team caught this issue too after switching to CentOS 7.4 with qemu-img > >> > 2.9.0 > >> > gdb shows exactly the same backtrace when the convert stuck, and we are > >> > on >

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Thu, Apr 12, 2018 at 10:16 AM, David Lee wrote: >> > My team caught this issue too after switching to CentOS 7.4 with qemu-img >> > 2.9.0 >> > gdb shows exactly the same backtrace when the convert stuck, and we are on >> > NFS. >> > >> > Later we found the following: >> >

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Thu, Apr 12, 2018 at 10:03 AM, Fam Zheng wrote: > On Thu, 04/12 09:51, David Lee wrote: > > On Mon, Apr 9, 2018 at 3:35 AM, Benny Zlotnik > wrote: > > > > > $ gdb -p 13024 -batch -ex "thread apply all bt" > > > [Thread debugging using libthread_db

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Thu, 04/12 09:51, David Lee wrote: > On Mon, Apr 9, 2018 at 3:35 AM, Benny Zlotnik wrote: > > > $ gdb -p 13024 -batch -ex "thread apply all bt" > > [Thread debugging using libthread_db enabled] > > Using host libthread_db library "/lib64/libthread_db.so.1". > >

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Mon, Apr 9, 2018 at 3:35 AM, Benny Zlotnik wrote: > $ gdb -p 13024 -batch -ex "thread apply all bt" > [Thread debugging using libthread_db enabled] > Using host libthread_db library "/lib64/libthread_db.so.1". > 0x7f98275cfaff in ppoll () from /lib64/libc.so.6 > >

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On 2018-04-09 08:04, Stefan Hajnoczi wrote: > On Sun, Apr 08, 2018 at 10:35:16PM +0300, Benny Zlotnik wrote: > > What type of storage are the source and destination images? (e.g. > source is a local qcow2 file on xfs, destination is a raw file on NFS) > >> $ gdb -p 13024 -batch -ex "thread

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

source: qcow2 on NFS target: raw on NFS source: $ qemu-img info /rhev/data-center/bb422fac-81c5-4fea-8782-3498bb5c8a59/26989331-2c39-4b34-a7ed-d7dd7703646c/images/597e12b6-19f5-45bd-868f-767600c7115e/62a5492e-e120-4c25-898e-9f5f5629853e image:

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Sun, Apr 08, 2018 at 10:35:16PM +0300, Benny Zlotnik wrote: What type of storage are the source and destination images? (e.g. source is a local qcow2 file on xfs, destination is a raw file on NFS) > $ gdb -p 13024 -batch -ex "thread apply all bt" > [Thread debugging using libthread_db

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

$ gdb -p 13024 -batch -ex "thread apply all bt" [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x7f98275cfaff in ppoll () from /lib64/libc.so.6 Thread 1 (Thread 0x7f983e30ab00 (LWP 13024)): #0 0x7f98275cfaff in ppoll () from

Re: [Qemu-block] [Qemu-discuss] qemu-img convert stuck

On Sun, Apr 8, 2018 at 9:27 PM Benny Zlotnik wrote: > Hi, > > As part of copy operation initiated by rhev got stuck for more than a day > and consumes plenty of CPU > vdsm 13024 3117 99 Apr07 ?1-06:58:43 /usr/bin/qemu-img convert > -p -t none -T none -f qcow2 >