From 8eb79a57c18395864e6ef3c776a40d57d9743332 Mon Sep 17 00:00:00 2001 From: dgaudet Date: Mon, 20 Nov 2006 05:22:44 +0000 Subject: improve documentation of --no-compare-inode git-svn-id: http://svn.savannah.nongnu.org/svn/rdiff-backup/trunk@774 2b77aa54-bcbc-44c9-a7ec-4f6cf2b41109 --- rdiff-backup/rdiff-backup.1 | 15 +++++++++------ 1 file 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 -- cgit v1.2.1