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- Newsgroups: comp.unix.ultrix
- Path: sparky!uunet!cs.utexas.edu!torn!skule.ecf!drill.me!ie.utoronto.ca!andy
- From: andy@ie.utoronto.ca (Andy Sun)
- Subject: Re: SCSI/CAM problems
- Message-ID: <Bu862I.Dq@ie.utoronto.ca>
- Organization: University of Toronto, Department of Industrial Engineering
- References: <ROBM.92Sep4150116@ataraxia.Berkeley.EDU> <1992Sep5.011659.7675@news.iastate.edu>
- Date: Mon, 7 Sep 1992 20:25:29 GMT
- Lines: 37
-
- john@iastate.edu (John Hascall) writes:
-
- >We upgraded our central NFS servers from 5000/200s to 5000/240s
- >and since we had to upgrade from 4.2, we installed the SCSI/CAM
- >at the same time. Our machines have 2 or 3 SCSI boards, 8-12 RZ57s,
- >and a TLZ04 each (the DEC support guy said he thought the other
- >problem report he had on this also was a multi-SCSI machine).
-
- >What happens is we start getting *tons* of:
- > XPT Packet Pool HIGH Water Mark Reached.
- > cam_logger: CAM_ERROR packet
- > cam_logger: No associated bus target lun
- >messages on the console and also (in the two times I have seen it happen)
- >the dreaded "cant get mbufs" message also appears. It seems to be somehow
- >related to uptime (memory leak?) and load (so, of course, today, with a
- >machine which hung last night and being the Friday before a long weekend,
- >we had neither and I couldn't reproduce it for DEC *sigh*).
-
- I am afraid that the same thing happens to us (a DECsystem 5000/200
- recently upgraded to 4.2a with SCSI/CAM). Similar messages appear in the
- error log (viewed through uerf). Even more horrible, our machine hung up
- on us twice so far (i.e. no response, not even from console). I attempted
- a core trace without any luck. It seems to be related to our USENET news
- activities, when there were lots of read/write to an RZ58 partition.
-
- >I was told that backing out of SCSI/CAM was NOT as simple as
- >just "setld -d ..." If we can't get a fix by next week we are
- >resigned to going backwards to 4.2a.
-
- OH MY GOD!! (fainted...)
-
- Andy
- --
- Andy Sun (andy@ie.utoronto.ca) 4 Taddle Creek Road, Toronto
- Computing Coordinator Ontario, Canada. M5S 1A4
- Department of Industrial Engineering Phone: (416) 978-2920
- University of Toronto Fax: (416) 978-3453
-