Snapshots is typically accessed and instantiated via the
Provides a view over the Snapshots class, filtering to only show snapshots of a given fileset.
If the fileset is passed as None, then global snapshots are returned.
NB. This collection is not externally mutable. Use the ‘new’ method to create snapshots and add them to the collection.
Create a new Snapshot, given a name.
The snapshot is taken of the fileset upon which this collection is filtering (as passed in the constructor)
Parameters: name (str) – The name to use for the snapshot. Note this must be unique per fileset, but need not be globally unique. Return type: Snapshot Raises: GPFSExecuteException: The underlying GPFS call to mmdelsnapshot failed
destroy(snapname, qosClass=None, nodes=None)¶
Destroy a snapshot.
This removes it from the filesystem, and also from this collection.
GPFSExecuteException: The underlying GPFS call to mmdelsnapshot failed
ValueError: The snapshot with the name passed was not found in the collection
Snapshot all independent filesets on the cluster whose name starts with ‘sata1-‘¶
>>> from arcapix.fs.gpfs import Cluster >>> from arcapix.fs.gpfs import IndependentFileset >>> import datetime >>> >>> # Load our cluster ... mycluster = Cluster() >>> >>> # Select the mmfs1 file system ... filesys = mycluster.filesystems['mmfs1'] >>> >>> # Create a snapshot name compatible with SAMBA's vss_shadow_copy2 ... today = datetime.datetime.today() ... snapshot_name = datetime.datetime.strftime(today, "@GMT-%Y.%m.%d-%H.%M.%S") >>> >>> # Iterate the filesystem's filesets ... for fset in filesys.filesets.values(): ... ... # Only IndependentFilesets support snapshots ... if isinstance(fset, IndependentFileset) and fset.name.startswith("sata1-"): ... ... # Create the snapshot ... fset.snapshots.new(snapshot_name)