The proper mechanism for this is obtained by "man stinit" under recent
versions of Linux; Solaris has an analogous mechanism. Other systems
probably also have it, but I don't know for sure. To use hardware
compression, just refer to the device name that has the compression
enabled.
For instance, on my tape server, my /etc/stinit.def looks like:
# The common definitions that can usually be used
{buffer-writes read-ahead async-writes }
# Seagate AIT
manufacturer=SEAGATE model="AIT" {
can-bsr can-partitions scsi2logical auto-lock
mode1 blocksize=0 density=0x30 compression=0 # native, no compression
mode2 blocksize=0 density=0x30 compression=1 # native, w/ compression
}
Under Linux, you will almost certainly need to use "mknod" to create
appropriate devices; mine (on a SCSI interface) look like:
crw-rw-rw- 1 root disk 9, 128 May 5 1998 /dev/nst0
crw-rw-rw- 1 root root 9, 160 Dec 11 1999 /dev/nst0c
crw-rw-rw- 1 root disk 9, 0 May 5 1998 /dev/st0
crw-rw-rw- 1 root root 9, 32 Dec 11 1999 /dev/st0c
(Actual backups are done on a different machine & drive; these are for
illustration only.)
Cheers,
Marty
--
Marty Shannon, RHCE, Independent Computing Consultant
mailto:[EMAIL PROTECTED]
