FSCV(1M) — UNIX 3.0

NAME

fscv − convert files between PDP-11 and VAX-11/780 systems

SYNOPSIS

/etc/fscv −v ispecial [ ospecial ]
/etc/fscv −p ispecial [ ospecial ]

DESCRIPTION

Fscv converts file systems between PDP-11 and VAX-11/780 formats. The super block, free list, and inodes are converted to the format of the output file. Fscv may be executed on PDP-11 and VAX processors. The mandatory flag specifies the format of the converted file system:

−v Convert file system from PDP-11 to VAX format.

−p Convert file system from VAX to PDP-11 format.

Ispecial is the name of a special file containing a file system to be converted (e.g.; /dev/rrp1). The optional ospecial is the name of the special file to receive the results of the conversion. If ospecial is specified the entire contents of ispecial are copied to ospecial before the conversion is performed. If ospecial is not specified an in-place conversion of ispecial is performed. The following items should be noted before executing fscv:

1. A file system consistency check (fsck(1M)) should be performed on ispecial immediately prior to executing fscv.

2. Neither ispecial nor the optional ospecial should contain a mounted file system during execution of fscv. Modification to either the input or the output file system while fscv is executing will probably corrupt the converted file system.

3. A backup of ispecial (see volcopy(1M)) is highly recommended if an in-place conversion is to be performed. System crashes, I/O errors, etc., during execution of fscv may destroy the file system contained in ispecial. Also, if the optional ospecial is specified any data contained in that special file will be over written.

4. If the optional ospecial is specified, this special file must be large enough to contain the entire contents of ispecial. See the appropriate special files in section 4.

EXAMPLES

Copy and convert a file system from PDP-11 to VAX format:

/etc/fscv −v /dev/rrp0 /dev/rrp10

Perform an in-place conversion from VAX to PDP-11 format:

/etc/fscv −p /dev/rrp10

BUGS

The boot block is not modified during conversion. The resulting file system will not be bootable. No data contained in the files of the file system are modified.

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