On Fri, 2024-03-22 16:57:12 +0100, Hans Rosenfeld <hans%netbsd.org@localhost> wrote: > I wanted to create a backup of my VS 4k90 root disk, and I ran into a > whole lot of SCSI weirdness like I've never seen before. I got three IBM > DNES-318350 disks out of storage in th hope that at least one would > work, but that seems not to be the case. > > The issues start with SCSI timeouts before the disks are even attached: > > [ 3.539508] (asc0:2:0): selection failed; 11 left in FIFO [intr 18, stat 93, step 3] > [ 13.539441] probe(asc0:0:2:0): asc0: timed out [ecb 0x87ec1fa8 (flags 0x1, dleft 10, stat 0)], <state 2, nexus 0x87ec1fa8, phase(l 13, c 3, p 3), resid 0, msg(q 20,o 80) > > [ 15.549440] probe(asc0:0:2:0): asc0: timed out [ecb 0x87ec1fa8 (flags 0x41, dleft 10, stat 0)], <state 2, nexus 0x87ec1fa8, phase(l 13, c 3, p 3), resid 0, msg(q 20,o 80) > AGAIN > [ 15.579450] (asc0:2:0): selection failed; 11 left in FIFO [intr 18, stat 93, step 3] > [ 16.579446] probe(asc0:0:2:0): asc0: timed out [ecb 0x87ec1fa8 (flags 0x1, dleft 4000, stat 0)], <state 2, nexus 0x87ec1fa8, phase(l 13, c 3, p 3), resid 0, msg(q 20,o 80) > > [ 18.589440] probe(asc0:0:2:0): asc0: timed out [ecb 0x87ec1fa8 (flags 0x41, dleft 4000, stat 0)], <state 2, nexus 0x87ec1fa8, phase(l 13, c 3, p 3), resid 0, msg(q 20,o 80) > AGAIN > [ 18.605122] probe(asc0:0:2:0): async, 8-bit transfers > > But eventually, the disk attaches: > > [ 18.612879] sd1 at scsibus0 target 2 lun 0: <IBM, DNES-318350, SA30> disk fixed > [ 19.499438] sd1: 17501 MB, 11474 cyl, 10 head, 312 sec, 512 bytes/sect x 35843670 sectors > [ 19.519502] sd1: sync (160.00ns offset 15), 8-bit (6.250MB/s) transfers, tagged queueing I have vague memories that Maciej had similar SCSI issues with some system that he could track down to a bad memory chip. MfG, JBG --
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