Re: [libvirt] [PATCHv3] LXC: Fix handling of RAM filesystem size units

Since 76b644c when the support for RAM filesystems was introduced, libvirt accepted the following XML: <source usage='1024' unit='KiB'/> This was parsed correctly and internally stored in bytes, but it was formatted as (with an extra 's'): <source usage='1024' units='KiB'/> When read again, this was treated as if the units were missing, meaning libvirt was unable to parse its own XML correctly.

The usage attribute was documented as being in KiB, but it was not scaled if the unit was missing. Transient domains still worked, because this was balanced by an extra 'k' in the mount options. This patch: Changes the parser to use 'units' instead of 'unit', as the latter was never documented (fixing persistent domains). Removes the extra 'k' from the tmpfs mount options, which is needed because now we parse our own XML correctly. Changes the default input unit to KiB to match documentation, fixing: https://bugzilla.redhat.com/show_bug.cgi?id=1015689 ---

+++ b/src/lxc/lxc_container.c @@ -1428,7 +1428,7 @@ static int lxcContainerMountFSTmpfs(virDomainFSDefPtr fs, VIR_DEBUG("usage=%lld sec=%s", fs->usage, sec_mount_options); if (virAsprintf(&data, - "size=%lldk%s", fs->usage, sec_mount_options) < 0) + "size=%lld%s", fs->usage, sec_mount_options) < 0)