diff options
Diffstat (limited to 'rdiff-backup/rdiff-backup.1')
-rw-r--r-- | rdiff-backup/rdiff-backup.1 | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/rdiff-backup/rdiff-backup.1 b/rdiff-backup/rdiff-backup.1 index 52be9d8..bd93703 100644 --- a/rdiff-backup/rdiff-backup.1 +++ b/rdiff-backup/rdiff-backup.1 @@ -305,12 +305,15 @@ No Access Control Lists - disable backup of ACLs Disable backup of MacOS X carbonfile information .TP .B \-\-no-compare-inode -This relatively esoteric option prevents rdiff-backup from flagging a -file as changed when its inode changes. This option may be useful if -you are backing up two different directories to the same rdiff-backup -destination directory. The downside is that hard link information may -get messed up, as the metadata file may no longer have the correct -inode information. +This option prevents rdiff-backup from flagging a hardlinked file as changed +when its device number and/or inode changes. This option is useful in +situations where the source filesystem lacks persistent device and/or inode +numbering. For example, network filesystems may have mount-to-mount +differences in their device number (but possibly stable inode numbers); +USB/1394 devices may come up at different device numbers each remount (but +would generally have same inode number); and there are filesystems which +don't even have the same inode numbers from use to use. Without the +option rdiff-backup may generate unnecessary numbers of tiny diff files. .TP .B \-\-no-compression Disable the default gzip compression of most of the .snapshot and .diff |