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Annotation of cci/usr/src/man/man8/badsect.8, revision 1.1

1.1     ! root        1: .TH BADSECT 8 "25 February 1983"
        !             2: .UC 4
        !             3: .SH NAME
        !             4: badsect \- create files to contain bad sectors
        !             5: .SH SYNOPSIS
        !             6: .B /etc/badsect
        !             7: bbdir sector ...
        !             8: .SH DESCRIPTION
        !             9: .I Badsect
        !            10: makes a file to contain a bad sector.  Normally, bad sectors
        !            11: are made inaccessible by the standard formatter, which provides
        !            12: a forwarding table for bad sectors to the driver. 
        !            13: If a driver supports the bad blocking standard it is much preferable to
        !            14: use that method to isolate bad blocks, since the bad block forwarding
        !            15: makes the pack appear perfect, and such packs can then be copied with
        !            16: .IR dd (1).
        !            17: The technique used by this program is also less general than
        !            18: bad block forwarding, as
        !            19: .I badsect
        !            20: can't make amends for
        !            21: bad blocks in the i-list of file systems or in swap areas.
        !            22: .PP
        !            23: .I Badsect
        !            24: is used on a quiet file system in the following way:
        !            25: First mount the file system, and change to its root directory.
        !            26: Make a directory BAD there.  Run
        !            27: .I badsect
        !            28: giving as argument the BAD directory followed by
        !            29: all the bad sectors you wish to add.
        !            30: (The sector numbers must be relative to the beginning of
        !            31: the file system, but this is not hard as the system reports
        !            32: relative sector numbers in its console error messages.)
        !            33: Then change back to the root directory, unmount the file system
        !            34: and run
        !            35: .IR fsck (8)
        !            36: on the file system.  The bad sectors should show up in two files
        !            37: or in the bad sector files and the free list.  Have
        !            38: .I fsck
        !            39: remove files containing the offending bad sectors, but 
        !            40: .B "do not"
        !            41: have it remove the BAD/\fInnnnn\fR files.
        !            42: This will leave the bad sectors in only the BAD files.
        !            43: .PP
        !            44: .I Badsect
        !            45: works by giving the specified sector numbers in a
        !            46: .IR mknod (2)
        !            47: system call,
        !            48: creating an illegal file whose first block address is the block containing
        !            49: bad sector and whose name is the bad sector number.
        !            50: When it is discovered by 
        !            51: .I fsck
        !            52: it will ask ``HOLD BAD BLOCK''?
        !            53: A positive response will cause 
        !            54: .I fsck
        !            55: to convert the inode to a regular file containing the bad block.
        !            56: .SH SEE ALSO
        !            57: fsck(8),
        !            58: vdformat(8V)
        !            59: .SH DIAGNOSTICS
        !            60: .I Badsect
        !            61: refuses to attach a block that
        !            62: resides in a critical area or is out of range of the file system.
        !            63: A warning is issued if the block is already in use.
        !            64: .SH BUGS
        !            65: If more than one sector which comprise a file system fragment are bad,
        !            66: you should specify only one of them to
        !            67: .I badsect,
        !            68: as the blocks in the bad sector files actually cover all the sectors in a
        !            69: file system fragment.

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