1 IBM's Journaled File System (JFS) for Linux
3 JFS Homepage: http://oss.software.ibm.com/jfs/
7 Dave Kleikamp shaggy@austin.ibm.com
8 Dave Blaschke blaschke@us.ibm.com
9 Steve Best sbest@us.ibm.com
10 Barry Arndt barndt@us.ibm.com
12 The following mount options are supported:
14 iocharset=name Character set to use for converting from Unicode to
15 ASCII. The default is compiled into the kernel as
16 CONFIG_NLS_DEFAULT. Use iocharset=utf8 for UTF8
17 translations. This requires CONFIG_NLS_UTF8 to be set
18 in the kernel .config file.
20 resize=value Resize the volume to <value> blocks. JFS only supports
21 growing a volume, not shrinking it. This option is only
22 valid during a remount, when the volume is mounted
23 read-write. The resize keyword with no value will grow
24 the volume to the full size of the partition.
26 nointegrity Do not write to the journal. The primary use of this option
27 is to allow for higher performance when restoring a volume
28 from backup media. The integrity of the volume is not
29 guaranteed if the system abnormally abends.
31 integrity Default. Commit metadata changes to the journal. Use this
32 option to remount a volume where the nointegrity option was
33 previously specified in order to restore normal behavior.
35 errors=continue Keep going on a filesystem error.
36 errors=remount-ro Default. Remount the filesystem read-only on an error.
37 errors=panic Panic and halt the machine if an error occurs.
41 Plans for our near term development items
43 - enhance support for logfile on dedicated partition
45 Longer term work items
47 - implement defrag utility, for online defragmenting
49 - add support for block sizes (512,1024,2048)
51 Please send bugs, comments, cards and letters to shaggy@austin.ibm.com.
53 The JFS mailing list can be subscribed to by using the link labeled
54 "Mail list Subscribe" at our web page http://oss.software.ibm.com/jfs/.