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qemu: Adjust size for qcow2/qed if not on sector boundary

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https://bugzilla.redhat.com/show_bug.cgi?id=1002813

If qemuDomainBlockResize() is passed a size not on a KiB boundary - that
is passed a size based in bytes (VIR_DOMAIN_BLOCK_RESIZE_BYTES), then
depending on the source format (qcow2 or qed), the value passed must
be on a sector (or 512 byte) boundary. Since other libvirt code quietly
adjusts the capacity values, then do so here as well.
This commit is contained in:
John Ferlan 2014-05-12 10:21:09 -04:00
parent 85a117a579
commit 87388d688d
1 changed files with 7 additions and 0 deletions
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7
src/qemu/qemu_driver.c
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@ -9459,6 +9459,13 @@ qemuDomainBlockResize(virDomainPtr dom,
}
disk = vm->def->disks[idx];
/* qcow2 and qed must be sized on 512 byte blocks/sectors,
* so adjust size if necessary to round up.
*/
if (disk->src.format == VIR_STORAGE_FILE_QCOW2 ||
disk->src.format == VIR_STORAGE_FILE_QED)
size = VIR_ROUND_UP(size, 512);
if (virAsprintf(&device, "%s%s", QEMU_DRIVE_HOST_PREFIX,
disk->info.alias) < 0)
goto endjob;