rl(4) - NetBSD Manual Pages

Command: Section: Arch: Collection:  
RL(4)                 NetBSD/vax Kernel Interfaces Manual                RL(4)

rl -- RL11/ RL01 and RL02 disk interface
rlc0 at uba? csr 0177440 rl0 at rlc0 drive 0 rl* at rlc? drive ?
The rl driver is a typical block-device disk driver; block device I/O is described in physio(4). The script MAKEDEV(8) should be used to create the special files; if a special file needs to be created by hand consult mknod(8).
/dev/rl[0-7][a-h] block files /dev/rrl[0-7][a-h] raw files
rl%d: operation incomplete The current command to the disk did not com- plete within the timeout period. This may be due to hardware failure or a heavily loaded UNIBUS. rl%d: read data CRC The controller detected a CRC error on data read from the disk. Probably a bad disk pack. rl%d: header CRC The controller detected a CRC error on header data read from the disk. Probably a bad disk pack. rl%d: data late The controller was not able to transfer data over the bus fast enough to not overflow/underflow the internal FIFO, probably because a heavily loaded UNIBUS or mis-ordered UNIBUS devices. rl%d: header not found The requested sector was not found before the timer expired. If this error is the only error then it may indicate a software bug. rl%d: non-existent memory The controller tried to do DMA to/from a non- mapped address. This is a software bug. rl%d: memory parity error The host memory data sent had a parity error. This is a hardware failure.
vax/hp(4), vax/uda(4), vax/up(4), syslogd(8)
The rl driver has been around nearly forever. A complete new rl driver showed up in NetBSD 1.5.
Error handling is less than optimal. Seeks should be interleaved between multiple disks. NetBSD 9.0 February 17, 2017 NetBSD 9.0
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