Freezer LVM related functions
freezer.snapshot.lvm.
get_lvm_info
(path)¶Take a file system path as argument as backup_opt_dict.path_to_backup and return a list containing lvm_srcvol, lvm_volgroup where the path is mounted on.
path – the original file system path where backup needs to be executed
a dict containing the keys ‘volgroup’, ‘srcvol’ and ‘snap_path’
freezer.snapshot.lvm.
get_vol_fs_type
(vol_name)¶The argument need to be a full path lvm name i.e. /dev/vg0/var or a disk partition like /dev/sda1. The returnet value is the file system type
freezer.snapshot.lvm.
log_volume_holding_process
(lv)¶freezer.snapshot.lvm.
lvm_guess
(mount_point_path, mount_points, source='/proc/mounts')¶Guess lvm vol group and vol name from mount point
Extract the vol group and vol name from given list of mount_points and mount_point_path
mount_point_path – mount path
mount_points – list of currently mounted devices
a list containing volume group, volume name and full device path
freezer.snapshot.lvm.
lvm_snap
(backup_opt_dict)¶Checks the provided parameters and create the lvm snapshot if requested
The path_to_backup might be adjusted in case the user requested a lvm snapshot without specifying an exact path for the snapshot). The assumption in this case is that the user wants to use the lvm snapshot capability to backup the specified filesystem path, leaving out all the rest of the parameters which will guessed and set by freezer.
backup_opt_dict – the configuration dict
True if the snapshot has been taken, False otherwise
freezer.snapshot.lvm.
lvm_snap_remove
(backup_opt_dict)¶Unmount the snapshot and removes it
backup_opt_dict.lvm_dirmount – mount point of the snapshot
backup_opt_dict.lvm_volgroup – volume group to which the lv belongs
backup_opt_dict.lvm_snapname – name of the snapshot lv
None, raises on error
freezer.snapshot.lvm.
validate_lvm_params
(backup_opt_dict)¶Validates the parameters and raises in case of missing values
backup_opt_dict –
False is snapshot is not requested, True snapshot is requested and parameters are valid
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