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| -rw-r--r-- | upstream/opensuse-leap-15-6/man8/e2undo.8 | 84 |
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diff --git a/upstream/opensuse-leap-15-6/man8/e2undo.8 b/upstream/opensuse-leap-15-6/man8/e2undo.8 new file mode 100644 index 00000000..8b90f7aa --- /dev/null +++ b/upstream/opensuse-leap-15-6/man8/e2undo.8 @@ -0,0 +1,84 @@ +.\" -*- nroff -*- +.\" Copyright 2008 by Theodore Ts'o. All Rights Reserved. +.\" This file may be copied under the terms of the GNU Public License. +.\" +.TH E2UNDO 8 "February 2023" "E2fsprogs version 1.47.0" +.SH NAME +e2undo \- Replay an undo log for an ext2/ext3/ext4 file system +.SH SYNOPSIS +.B e2undo +[ +.B \-f +] +[ +.B \-h +] +[ +.B \-n +] +[ +.B \-o +.I offset +] +[ +.B \-v +] +[ +.B \-z +.I undo_file +] +.I undo_log device +.SH DESCRIPTION +.B e2undo +will replay the undo log +.I undo_log +for an ext2/ext3/ext4 file system found on +.IR device . +This can be +used to undo a failed operation by an e2fsprogs program. +.SH OPTIONS +.TP +.B \-f +Normally, +.B e2undo +will check the file system superblock to make sure the undo log matches +with the file system on the device. If they do not match, +.B e2undo +will refuse to apply the undo log as a safety mechanism. The +.B \-f +option disables this safety mechanism. +.TP +.B \-h +Display a usage message. +.TP +.B \-n +Dry-run; do not actually write blocks back to the file system. +.TP +.BI \-o " offset" +Specify the file system's +.I offset +(in bytes) from the beginning of the device or file. +.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) +.SH AVAILABILITY +.B e2undo +is part of the e2fsprogs package and is available from +http://e2fsprogs.sourceforge.net. +.SH SEE ALSO +.BR mke2fs (8), +.BR tune2fs (8) + |