e2label(8) [redhat man page]

E2LABEL(8)						      System Manager's Manual							E2LABEL(8)

NAME

       e2label - Change the label on an ext2 filesystem

SYNOPSIS

       e2label device [ new-label ]

DESCRIPTION

       e2label will display or change the filesystem label on the ext2 filesystem located on device.

       If the optional argument new-label is not present, e2label will simply display the current filesystem label.

       If  the	optional argument new-label is present, then e2label will set the filesystem label to be new-label.  Ext2 filesystem labels can be
       at most 16 characters long; if new-label is longer than 16 characters, e2label will truncate it and print a warning message.

       It is also possible to set the filesystem label using the -L option of tune2fs(8).

AUTHOR

       e2label was written by Theodore Ts'o (tytso@mit.edu).

AVAILABILITY

       e2label is part of the e2fsprogs package and is available from http://e2fsprogs.sourceforge.net.

SEE ALSO

       mke2fs(8), tune2fs(8)

E2fsprogs version 1.32						   November 2002							E2LABEL(8)

xfs_admin(8)						      System Manager's Manual						      xfs_admin(8)

NAME

       xfs_admin - change parameters of an XFS filesystem

SYNOPSIS

       xfs_admin [ -eflu ] [ -c 0|1 ] [ -L label ] [ -U uuid ] device

DESCRIPTION

       xfs_admin uses the xfs_db(8) command to modify various parameters of a filesystem.

       Devices that are mounted cannot be modified.  Administrators must unmount filesystems before xfs_admin or xfs_db(8) can convert parameters.
       A number of parameters of a mounted filesystem can be examined and modified using the xfs_growfs(8) command.

OPTIONS

       -e     Enables unwritten extent support on a filesystem that does not already have this enabled (for legacy filesystems, it can't  be  dis-
	      abled anymore at mkfs time).

       -f     Specifies that the filesystem image to be processed is stored in a regular file at device (see the mkfs.xfs -d file option).

       -j     Enables version 2 log format (journal format supporting larger log buffers).

       -l     Print the current filesystem label.

       -u     Print the current filesystem UUID (Universally Unique IDentifier).

       -c 0|1 Enable  (1) or disable (0) lazy-counters in the filesystem.  This operation may take quite a bit of time on large filesystems as the
	      entire filesystem needs to be scanned when this option is changed.

	      With lazy-counters enabled, the superblock is not modified or logged on every change of the free-space and inode counters.  Instead,
	      enough  information  is kept in other parts of the filesystem to be able to maintain the counter values without needing to keep them
	      in the superblock. This gives significant improvements in performance on some configurations and metadata intensive workloads.

       -L label
	      Set the filesystem label to label.  XFS filesystem labels can be at most 12 characters long; if label is longer than 12  characters,
	      xfs_admin will truncate it and print a warning message.  The filesystem label can be cleared using the special "--" value for label.

       -U uuid
	      Set  the	UUID of the filesystem to uuid.  A sample UUID looks like this: "c1b9d5a2-f162-11cf-9ece-0020afc76f16".  The uuid may also
	      be nil, which will set the filesystem UUID to the null UUID.  The uuid may also be generate, which will generate a new UUID for  the
	      filesystem.

       The mount(8) manual entry describes how to mount a filesystem using its label or UUID, rather than its block special device name.

SEE ALSO

       mkfs.xfs(8), mount(8), xfs_db(8), xfs_growfs(8), xfs_repair(8), xfs(5).

																      xfs_admin(8)