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Diffstat (limited to 'misc/e2undo.8.in')
| -rw-r--r-- | misc/e2undo.8.in | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/misc/e2undo.8.in b/misc/e2undo.8.in index da8b9189..d8265b16 100644 --- a/misc/e2undo.8.in +++ b/misc/e2undo.8.in @@ -17,8 +17,16 @@ e2undo \- Replay an undo log for an ext2/ext3/ext4 filesystem .B \-n ] [ +.B \-o +.I offset +] +[ .B \-v ] +[ +.B \-z +.I undo_file +] .I undo_log device .SH DESCRIPTION .B e2undo @@ -53,6 +61,16 @@ Specify the filesystem's .TP .B \-v Report which block we're currently replaying. +.TP +.BI \-z " undo_file" +Before overwriting a file system block, write the old contents of the block to +an undo file. This undo file can be used with e2undo(8) to restore the old +contents of the file system should something go wrong. If the empty string is +passed as the undo_file argument, the undo file will be written to a file named +e2undo-\fIdevice\fR.e2undo in the directory specified via the +\fIE2FSPROGS_UNDO_DIR\fR environment variable. + +WARNING: The undo file cannot be used to recover from a power or system crash. .SH AUTHOR .B e2undo was written by Aneesh Kumar K.V. (aneesh.kumar@linux.vnet.ibm.com) |