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Red Hat Enterprise Linux 8 Essentials Book now available.

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1.3. Differences between GFS and GFS2

This section lists the improvements and changes that GFS2 offers over GFS.
Migrating from GFS to GFS2 requires that you convert your GFS file systems to GFS2 with the gfs2_convert utility. For information on the gfs2_convert utility, see Appendix A, Converting a File System from GFS to GFS2.

1.3.1. GFS2 Command Names

In general, the functionality of GFS2 is identical to GFS. The names of the file system commands, however, specify GFS2 instead of GFS. Table 1.1, “GFS and GFS2 Commands” shows the equivalent GFS and GFS2 commands.
Table 1.1. GFS and GFS2 Commands
GFS Command GFS2 Command Description
mount mount Mount a file system. The system can determine whether the file system is a GFS or GFS2 file system type. For information on the GFS2 mount options see the gfs2_mount(8) man page.
umount umount Unmount a file system.
fsck
gfs_fsck
fsck
fsck.gfs2
Check and repair an unmounted file system.
gfs_grow gfs2_grow Grow a mounted file system.
gfs_jadd gfs2_jadd Add a journal to a mounted file system
gfs_mkfs
mkfs -t gfs
mkfs.gfs2
mkfs -t gfs2
Create a file system on a storage device.
gfs_quota gfs2_quota Manage quotas on a mounted file system.
gfs_tool gfs2_tool Configure, tune, or gather information about a file system.
gfs_edit gfs2_edit Display, print, or edit file system internal structures. The gfs2_edit command can be used for GFS file systems as well as GFS2 file system.
gfs_tool setflag jdata/inherit_jdata chattr +j (preferred) Enable journaling on a file or directory.
setfacl/getfacl setfacl/getfacl Set or get file access control list for a file or directory.
setfattr/getfattr setfattr/getfattr Set or get the extended attributes of a file.

For a full listing of the supported options for the GFS2 file system commands, see the man pages for those commands.

 
 
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