def download_snapshot(
self,
zpool,
zvol,
remotehost,
):
params = {
'user': self.imgUser,
'zpool': zpool,
'zvol': zvol,
'snap_name': self.snapname(),
'remotehost': remotehost,
'remotehost_zpool': self.get_node_zpool(remotehost),
'local_last_snapshot': self.find_last_snapshot(zpool,
zvol),
}
download_speed = imgstorage.get_attribute('img_download_speed',
remotehost, self.logger)
params['throttle'] = (' | pv -L %s -q '
% download_speed if download_speed else ''
)
runCommand(['su', self.imgUser, '-c',
'/usr/bin/ssh %(remotehost)s "/sbin/zfs snap %(remotehost_zpool)s/%(zvol)s@%(snap_name)s"'
% params])
runCommand(['su %(user)s -c \'/usr/bin/ssh %(remotehost)s "/sbin/zfs send -i %(remotehost_zpool)s/%(zvol)s@%(local_last_snapshot)s %(remotehost_zpool)s/%(zvol)s@%(snap_name)s"\' %(throttle)s | zfs receive -F %(zpool)s/%(zvol)s'
% params], shell=True)
def destroy_local_snapshot(snapshot):
runCommand(['/sbin/zfs', 'destroy', snapshot])
out = runCommand([
'/sbin/zfs',
'list',
'-Hpr',
'-t',
'snapshot',
'-o',
'name',
'-s',
'creation',
'%s/%s' % (zpool, zvol),
])
## Find only the snapshots that we have created
out = filter(lambda x : x.find(self.prefix) >= 0, out)
map(destroy_local_snapshot, out[:-2])
def upload_snapshot(
self,
zpool,
zvol,
remotehost,
):
params = {
'user': self.imgUser,
'zpool': zpool,
'zvol': zvol,
'snap_name': self.snapname(),
'remotehost': remotehost,
'remotehost_zpool': self.get_node_zpool(remotehost),
}
upload_speed = imgstorage.get_attribute('img_upload_speed',
remotehost, self.logger)
params['throttle'] = (' | pv -L %s -q '
% upload_speed if upload_speed else '')
runCommand(['zfs', 'snap', '%(zpool)s/%(zvol)s@%(snap_name)s'
% params])
runCommand(['zfs send %(zpool)s/%(zvol)s@%(snap_name)s %(throttle)s | su %(user)s -c \'ssh %(remotehost)s "/sbin/zfs receive -F %(remotehost_zpool)s/%(zvol)s"\''
% params], shell=True)
def get_node_zpool(self, remotehost):
return imgstorage.get_attribute('vm_container_zpool',
remotehost, self.logger)
def is_sync_node(self, remotehost):
""" Get information from attributes if image sync is enabled for the
node"""
return rocks.util.str2bool(imgstorage.get_attribute('img_sync', remotehost,
self.logger))