@@ -3,6 +3,7 @@

[chiark-utils.git] / backup / iwjbackup.txt

diff --git a/backup/iwjbackup.txt b/backup/iwjbackup.txt
index 9c39ab740e44a0156f23d4a593512bf872cc8d7a..5de4276dcb28d30b13ee6edb7646c9b1de5dac59 100644 (file)
--- a/backup/iwjbackup.txt
+++ b/backup/iwjbackup.txt
@@ -69,9 +69,12 @@ volumes, requires device name).  Only `dump' type backups perform
 incremental backups.
 
 <options> is a comma-separated list of <option> or <option>=<value>.
-The only currently support option is gz[=<compressionlevel>], to
+The only currently support options are gz[i][=<compressionlevel>], to
 indicate that the whole stream should be compressed with gzip.  The
-compression level defaults to 1.
+compression level defaults to 1 if gz is specified by the level isn't.
+gzi appliies only to the incrementals; gz applies to both unless gzi
+is also specified.  compression level 0 means not to run gzip at all
+and is the default if gz[i] is not mentioned.
 
 expected-diffs is a config file to indicate which 
 filesystems should *not* be backed up. The scripts do a config