NAME
ch —
SCSI media changer driver
SYNOPSIS
ch* at scsibus? target ? lun ?
DESCRIPTION
Thech driver is essentially an
ioctl(2) interface to a robot on a SCSI bus - a device that will change
media (e.g. tapes, CD-ROMs, etc) in and out of drives for that media. The
chio(1) utility program uses this interface to manipulate such robots.
FILES
- /dev/chu
- SCSI bus media changer unit u
/usr/include/sys/chio.h
DIAGNOSTICS
- ch%d: waiting %d seconds for changer to settle...
- Some changers require a long time to settle out, to do tape inventory, for instance.
- ch%d: offline
- The changer is not responding.
- ch%d: warning, READ ELEMENT STATUS avail != count
- ch%d: could not sense element address page
- ch%d: could not sense capabilities page
SEE ALSO
AUTHORS
Jason R. Thorpe