On 09.10.2013 17:15, Michal Privoznik wrote:
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@ohmu.fi> --- 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
Just to let you and everybody else's know - I'll wait for you to post v2 to this patch (probably worth resending the set) and push the whole new patch set even though the 1/2 is ACKed. The rationale is, the virDirIsExecutable is worth a separate patch - that is the new set will have 3 patches (at least). Michal