dumplfs man page on NetBSD

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DUMPLFS(8)		  BSD System Manager's Manual		    DUMPLFS(8)

NAME
     dumplfs — dump file system information

SYNOPSIS
     dumplfs [-adiS] [-b blkno] [-I blkno] [-s segno] filesys | device

DESCRIPTION
     dumplfs prints out the file system layout information for the LFS file
     system or special device specified.  The listing is very long and
     detailed.	This command is useful mostly for finding out certain file
     system information such as the file system block size.

     The following flags are interpreted by dumplfs.

     -a	     Dump the contents of all superblocks, not just the first.
	     Superblocks appear in the dumplfs output with the segment con‐
	     taining them.

     -b	     Use the block specified immediately after the flag as the super
	     block for the filesystem.

     -d	     Check partial segment data checksums and report mismatches.  This
	     makes dumplfs operate much more slowly.

     -I	     Use the block specified immediately after the flag as the inode
	     block containing the index file inode.

     -i	     Dump information about the inode free list.

     -S	     Dump information about the segment table.

     -s	     Add the segment number immediately following the flag to a list
	     of segments to dump.  This flag may be specified more than once
	     to dump more than one segment.  The default is to dump all seg‐
	     ments.

SEE ALSO
     disktab(5), fs(5), disklabel(8), newfs_lfs(8)

HISTORY
     The dumplfs command appeared in 4.4BSD.

BSD				 June 13, 2000				   BSD
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