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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-05-30 14:51:13 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-05-30 14:51:13 +0000 |
| commit | 225caa38269323af1bfc2daadff5ec8bd930747f (patch) | |
| tree | e0a5fefde9ee100ba6f32fb36de6707490e4164e /mailinglist/output_launchpad/1410288 | |
| parent | 904141bfb8d5385b75eb3b7afec1dcda89af65a7 (diff) | |
| download | emulator-bug-study-225caa38269323af1bfc2daadff5ec8bd930747f.tar.gz emulator-bug-study-225caa38269323af1bfc2daadff5ec8bd930747f.zip | |
add mailinglist scraper results
Diffstat (limited to 'mailinglist/output_launchpad/1410288')
| -rw-r--r-- | mailinglist/output_launchpad/1410288 | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/mailinglist/output_launchpad/1410288 b/mailinglist/output_launchpad/1410288 new file mode 100644 index 00000000..d55ef056 --- /dev/null +++ b/mailinglist/output_launchpad/1410288 @@ -0,0 +1,66 @@ +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. + |