diff options
Diffstat (limited to 'mailinglist/output_launchpad/1321684')
| -rw-r--r-- | mailinglist/output_launchpad/1321684 | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/mailinglist/output_launchpad/1321684 b/mailinglist/output_launchpad/1321684 new file mode 100644 index 00000000..c18218ae --- /dev/null +++ b/mailinglist/output_launchpad/1321684 @@ -0,0 +1,81 @@ +block_stream command stalls + +block_stream command stalls near finishing. +I tried 1.7.1, 2.0.0 and the master versions. All of them stalled. +But the 1.1.2 could finish the job. + +Here is how to reproduce it: + +$ sudo $QEMU \ +-enable-kvm -cpu qemu64 -m 1024 \ +-monitor stdio \ +-drive file=./i1,if=none,id=drive_0,cache=none,aio=native -device virtio-blk-pci,drive=drive_0,bus=pci.0,addr=0x5 \ + +QEMU 2.0.50 monitor - type 'help' for more information +(qemu) VNC server running on `127.0.0.1:5900' +(qemu) snapshot_blkdev drive_0 s1 +Formatting 's1', fmt=qcow2 size=26843545600 backing_file='./i1' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off +(qemu) block_stream drive_0 +(qemu) info block-jobs +Streaming device drive_0: Completed 400818176 of 26843545600 bytes, speed limit 0 bytes/s +(qemu) info block-jobs +Streaming device drive_0: Completed 904396800 of 26843545600 bytes, speed limit 0 bytes/s +(qemu) info block-jobs +Streaming device drive_0: Completed 23401070592 of 26843545600 bytes, speed limit 0 bytes/s +(qemu) info block-jobs +Streaming device drive_0: Completed 26513768448 of 26843545600 bytes, speed limit 0 bytes/s +(qemu) main-loop: WARNING: I/O thread spun for 1000 iterations +info block-jobs +Streaming device drive_0: Completed 26841513984 of 26843545600 bytes, speed limit 0 bytes/s +(qemu) info block-jobs +Streaming device drive_0: Completed 26841513984 of 26843545600 bytes, speed limit 0 bytes/s +(qemu) info block-jobs +Streaming device drive_0: Completed 26841513984 of 26843545600 bytes, speed limit 0 bytes/s + +#### here, the progress stopped at 26841513984 #### + + +$ qemu-img info i1 +image: i1 +file format: qcow2 +virtual size: 25G (26843545600 bytes) +disk size: 1.0G +cluster_size: 2097152 +Format specific information: + compat: 1.1 + lazy refcounts: false + +On Wed, May 21, 2014 at 09:55:26AM -0000, mcpacino wrote: +> block_stream command stalls near finishing. +> I tried 1.7.1, 2.0.0 and the master versions. All of them stalled. +> But the 1.1.2 could finish the job. + +Can you still reproduce this on qemu.git/master? + +$ qemu-system-x86_64 -enable-kvm -m 1024 -cpu host -drive if=virtio,cache=none,file=test.img,id=drive_1 +... +(qemu) info block-jobs +Streaming device drive0: Completed 3115843584 of 8589934592 bytes, speed limit 0 bytes/s +(qemu) info block-jobs +Streaming device drive0: Completed 3171942400 of 8589934592 bytes, speed limit 0 bytes/s +(qemu) info block-jobs +No active jobs + + +To Stefan: + +yes, I can reproduce this on qemu.git/master. + +Actually, I've found the cause of this bug and sent a patch to qemu-devel mailing list a few days ago: +http://lists.nongnu.org/archive/html/qemu-devel/2014-05/msg05777.html + +It's very kind of you helping review the patch and give some comments. + +Thanks. + +Cong Meng. + +Triaging 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.] + |