mke2fs: optionally create undo file

[tools/e2fsprogs.git] / misc / mke2fs.8.in

diff --git a/misc/mke2fs.8.in b/misc/mke2fs.8.in
index 1002eae..3230f65 100644 (file)
--- a/misc/mke2fs.8.in
+++ b/misc/mke2fs.8.in
@@ -52,6 +52,10 @@ mke2fs \- create an ext2/ext3/ext4 filesystem
 .I number-of-inodes
 ]
 [
+.B \-d
+.I root-directory
+]
+[
 .B \-n
 ]
 [
@@ -109,6 +113,14 @@ mke2fs \- create an ext2/ext3/ext4 filesystem
 [
 .B \-V
 ]
+[
+.B \-e
+.I errors-behavior
+]
+[
+.B \-z
+.I undo_file
+]
 .I device
 [
 .I fs-size
@@ -231,6 +243,25 @@ lot of buffer cache memory, which may impact other applications running
 on a busy server.  This option will cause mke2fs to run much more
 slowly, however, so there is a tradeoff to using direct I/O.
 .TP
+.BI \-e " error-behavior"
+Change the behavior of the kernel code when errors are detected.
+In all cases, a filesystem error will cause
+.BR e2fsck (8)
+to check the filesystem on the next boot.
+.I error-behavior
+can be one of the following:
+.RS 1.2i
+.TP 1.2i
+.B continue
+Continue normal execution.
+.TP
+.B remount-ro
+Remount filesystem read-only.
+.TP
+.B panic
+Cause a kernel panic.
+.RE
+.TP
 .BI \-E " extended-options"
 Set extended options for the filesystem.  Extended options are comma
 separated, and may take an argument using the equals ('=') sign.  The
@@ -558,6 +589,9 @@ the
 ratio).  This allows the user to specify the number
 of desired inodes directly.
 .TP
+.BI \-d " root-directory"
+Add the files from the root-directory to the filesystem.
+.TP
 .BI \-o " creator-os"
 Overrides the default value of the "creator operating system" field of the
 filesystem.  The creator field is set by default to the name of the OS the
@@ -708,6 +742,17 @@ Verbose execution.
 Print the version number of
 .B mke2fs
 and exit.
+.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
+mke2fs-\fIdevice\fR.e2undo in the directory specified via the
+\fIE2FSPROGS_UNDO_DIR\fR environment variable or the \fIundo_dir\fR directive
+in the configuration file.
+
+WARNING: The undo file cannot be used to recover from a power or system crash.
 .SH ENVIRONMENT
 .TP
 .BI MKE2FS_SYNC