Re: [libvirt] [PATCH 2/2] storage: btrfs subvolumes for directory pools

On 10.09.2013 20:59, Oskari Saarenmaa wrote: > This commit adds support for btrfs subvolumes as directory volumes. The > directory storage pool can be used to manage btrfs subvolumes on an existing > btrfs filesystem. The driver can create new blank subvolumes and snapshots > of existing subvolumes as well as delete existing subvolumes. > > The subvolumes created are automatically made visible on the host side > and can be attached to domains using the <filesystem> tags as defined in > 'format domain' documentation. > > Subvolumes do not implement quotas at the moment because the current > (btrfs-progs-0.20.rc1.20130501git7854c8b-4.fc20.x86_64) support for quota > management in btrfs-progs is lacking the necessary features, for example > it's not possible to see the quota assigned to a certain subvolume and > usage information is only updated on syncfs(2). Quota support will be > implemented once the tools gain the necessary features. > > Signed-off-by: Oskari Saarenmaa <os(a)ohmu.fi&gt; > --- > configure.ac | 25 ++- > docs/schemas/storagevol.rng | 1 + > docs/storage.html.in | 30 ++- > libvirt.spec.in | 4 + > src/conf/storage_conf.c | 3 + > src/conf/storage_conf.h | 1 + > src/storage/storage_backend.c | 15 +- > src/storage/storage_backend_fs.c | 222 ++++++++++++++++++++-- > src/util/virstoragefile.c | 4 +- > src/util/virstoragefile.h | 1 + > tests/storagevolxml2xmlin/vol-btrfs-snapshot.xml | 13 ++ > tests/storagevolxml2xmlin/vol-btrfs.xml | 9 + > tests/storagevolxml2xmlout/vol-btrfs-snapshot.xml | 26 +++ > tests/storagevolxml2xmlout/vol-btrfs.xml | 17 ++ > tests/storagevolxml2xmltest.c | 2 + > 15 files changed, 343 insertions(+), 30 deletions(-) > create mode 100644 tests/storagevolxml2xmlin/vol-btrfs-snapshot.xml > create mode 100644 tests/storagevolxml2xmlin/vol-btrfs.xml > create mode 100644 tests/storagevolxml2xmlout/vol-btrfs-snapshot.xml > create mode 100644 tests/storagevolxml2xmlout/vol-btrfs.xml >