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Diffstat (limited to 'results/classifier/105/socket/1410288')
| -rw-r--r-- | results/classifier/105/socket/1410288 | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/results/classifier/105/socket/1410288 b/results/classifier/105/socket/1410288 new file mode 100644 index 00000000..740a99ee --- /dev/null +++ b/results/classifier/105/socket/1410288 @@ -0,0 +1,79 @@ +socket: 0.886 +other: 0.872 +instruction: 0.871 +device: 0.849 +graphic: 0.830 +assembly: 0.810 +boot: 0.798 +semantic: 0.777 +network: 0.759 +mistranslation: 0.660 +vnc: 0.623 +KVM: 0.534 + +qemu-img conversion to qcow2 hangs with blank image less than 100kiB + +If you try to convert a blank image to qcow2 that is less than 100kiB in size then qemu-img hangs trying to seek to the end of the file. + +$ truncate --size 102399 /tmp/temp +$ qemu-img convert -p -O qcow2 /tmp/temp /tmp/temp2.qcow2 + +I'm finding this on all versions of qemu-img v2. + +strace shows a seek loop. + +ioctl(6, FS_IOC_FIEMAP, 0xb5e68dc4) = 0 +_llseek(6, 0, [100000], SEEK_END) = 0 +ioctl(6, FS_IOC_FIEMAP, 0xb5e68dc4) = 0 +_llseek(6, 0, [100000], SEEK_END) = 0 +ioctl(6, FS_IOC_FIEMAP, 0xb5e68dc4) = 0 +_llseek(6, 0, [100000], SEEK_END) = 0 +ioctl(6, FS_IOC_FIEMAP, 0xb5e68dc4) = 0 +_llseek(6, 0, [100000], SEEK_END) = 0 +ioctl(6, FS_IOC_FIEMAP, 0xb5e68dc4) = 0 +_llseek(6, 0, [100000], SEEK_END) = 0 +ioctl(6, FS_IOC_FIEMAP, 0xb5e68dc4) = 0 +_llseek(6, 0, [100000], SEEK_END) = 0 +ioctl(6, FS_IOC_FIEMAP, 0xb5e68dc4) = 0 +_llseek(6, 0, [100000], SEEK_END) = 0 +ioctl(6, FS_IOC_FIEMAP, 0xb5e68dc4) = 0 +_llseek(6, 0, [100000], SEEK_END) = 0 + +ProblemType: Bug +DistroRelease: Ubuntu 14.04 +Package: qemu-utils 2.0.0+dfsg-2ubuntu1.10 +ProcVersionSignature: User Name 3.13.0-43.72-generic 3.13.11.11 +Uname: Linux 3.13.0-43-generic i686 +ApportVersion: 2.14.1-0ubuntu3.6 +Architecture: i386 +Date: Tue Jan 13 14:30:39 2015 +SourcePackage: qemu +UpgradeStatus: No upgrade log present (probably fresh install) + + + +Status changed to 'Confirmed' because the bug affects multiple users. + +Workaround is to 'fallocate'. Problem seems to be linked to files with sparse holes in them. + + + +verified this fails as described on vivid: +$ dpkg-query --show qemu-utils +qemu-utils 1:2.1+dfsg-11ubuntu1 + +and also on trusty. + +$ dpkg-query --show qemu-utils +qemu-utils 2.0.0+dfsg-2ubuntu1.10 + + +Does it also fail with the qemu from +https://launchpad.net/~ubuntu-virt/+archive/ubuntu/virt-daily-upstream ? +(This isn't quite git head, but it is qemu v2.2) + + +Went ahead and tested - it is in fact fixed in the v2.2 version. + +qemu is 2.5 in 16.04 and 2.6.1 in Zesty, so this is presumably Fix Released now. If incorrect, please explain and reopen. + |