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Added snapshot feature #1

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Added snapshot feature #1

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53dec1f
* added create_snapshot
mariocar Mar 26, 2013
7d32cba
* fixed bug in volume verification
mariocar Mar 26, 2013
dad3151
Translating from portuguese
mariocar Sep 22, 2014
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21 changes: 21 additions & 0 deletions zol.py
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Original file line number Diff line number Diff line change
Expand Up @@ -100,6 +100,24 @@ def _execute(self, *cmd, **kwargs):
command = ' '.join(cmd)
return self._run_ssh(command, check_exit_code)

def create_snapshot(self, snapshot):
"""Creates a snapshot."""
zfs_poolname = self._build_zfs_poolname(snapshot['volume_name'])
snap_path = "%s@%s" % (zfs_poolname, snapshot['name'])
self._execute(self.ZFSCMD, 'snapshot', snap_path,
run_as_root=True)

def delete_snapshot(self, snapshot):
"""Deletes a snapshot."""
zfs_poolname = self._build_zfs_poolname(snapshot['volume_name'])
snap_path = "%s@%s" % (zfs_poolname, snapshot['name'])
if self._volume_not_present(snapshot['volume_name']):
# If the snapshot isn't present, then don't attempt to delete
LOG.debug("SNAPSHOT NOT FOUND %s",(snap_path))
return True
self._execute(self.ZFSCMD, 'destroy', snap_path,
run_as_root=True)

def _create_volume(self, volume_name, sizestr):
zfs_poolname = self._build_zfs_poolname(volume_name)

Expand All @@ -113,6 +131,8 @@ def _create_volume(self, volume_name, sizestr):

def _volume_not_present(self, volume_name):
zfs_poolname = self._build_zfs_poolname(volume_name)
LOG.debug("ZFS_POOLNAME (%s)" % (zfs_poolname))

try:
out, err = self._execute(self.ZFSCMD, 'list', '-H',
zfs_poolname, run_as_root=True)
Expand All @@ -135,6 +155,7 @@ def delete_volume(self, volume):
"""Deletes a volume."""
if self._volume_not_present(volume['name']):
# If the volume isn't present, then don't attempt to delete
LOG.debug("VOLUME NOT FOUND (%s)" % (volume['name']))
return True
zfs_poolname = self._build_zfs_poolname(volume['name'])
self._execute(self.ZFSCMD, 'destroy', zfs_poolname, run_as_root=True)
Expand Down