[Qemu-devel] [Bug 1321684] [NEW] block_stream command stalls

[Qemu-devel] [Bug 1321684] [NEW] block_stream command stalls

[mcpacino]

Public bug reported:

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

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1321684

Title:
  block_stream command stalls

Status in QEMU:
  New

Bug description:
  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

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Re: [Qemu-devel] [Bug 1321684] [NEW] block_stream command stalls

[Stefan Hajnoczi]

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

[Qemu-devel] [Bug 1321684] Re: block_stream command stalls

[Thomas Huth]

Triaging old bug tickets... can you still reproduce this issue with the
latest version of QEMU? Or could we close this ticket nowadays?

** Changed in: qemu
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1321684

Title:
  block_stream command stalls

Status in QEMU:
  Incomplete

Bug description:
  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

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[Qemu-devel] [Bug 1321684] Re: block_stream command stalls

[Launchpad Bug Tracker]

[Expired for QEMU because there has been no activity for 60 days.]

** Changed in: qemu
       Status: Incomplete => Expired

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You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1321684

Title:
  block_stream command stalls

Status in QEMU:
  Expired

Bug description:
  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

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