** Changed in: qemu
Status: New => Fix Released
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1410288
Title:
qemu-img conversion to qcow2 hangs with blank image less than 100kiB
Status in QEMU:
Fix Released
Status in qemu package in Ubuntu:
Triaged
Bug description:
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)
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1410288/+subscriptions
