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- Newsgroups: biz.sco.general
- Path: sparky!uunet!nwnexus!Celestial.COM!bill
- From: bill@Celestial.COM (Bill Campbell)
- Subject: Re: SCSI eiad selection error, Sankyo Tape driv
- Organization: Celestial Software, Mercer Island, WA
- Date: Sat, 02 Jan 1993 18:42:00 GMT
- Message-ID: <1993Jan02.184200.17798@Celestial.COM>
- References: <9301011333.aa16107@dlpco.dlpco.COM>
- Lines: 42
-
- In <9301011333.aa16107@dlpco.dlpco.COM> lee@dlpco.dlpco.COM (Lee Penn ) uunet!mlite!tom@uunet.UU.NET writes:
-
- :I'm getting an error message from my system which has be puzzled.
- :It does not cause a problem, but we see the error every morning
- :when we come in after a CTAR backup to my Sankyo 1 Gig tape
- :drive.
-
- :NOTICE: eiad: Error (Selection Timeout) on SCSI adapter 0 (ha 0
- :id 2 lun 0)
-
- :I get this error message 4 times during our nightly ctar backup.
- :I think it comes actually from the verify step rather than the
- :actual backup step.
-
- There may be a timing problem when you start the tarcheck backup
- if you don't wait a bit after CTAR is done to allow the tape to
- rewind. I put a 'sleep 120' in my nightly backup script to give
- the drive time to finish rewinding.
-
- :If I try to run the verify from the csave menu, then I get the
- :error message pops up after a while and ctar asks if I should do
- :error recovery. If I reply with a yes, then the verify continues
- :onward. During the nightly backup/verify, I am assuming that
- :ctar simply retries automatically.
-
- :This is an irritating, but not disasterous problem and only
- :occurs with the tape drive. I suspect that backing off the
- :blocking factor to 20 rather than 64 might help, but am not sure.
-
- I use a blocking factor of 20 for two reasons. First I can read
- the tapes with standard tar programs (SCO's didn't support
- blocking > 20 last time I looked). Second on older Xenix systems
- the system slowed down drastically on some large blocking
- factors. There didn't seem to be any significant speed penalty
- for using blocking of 20.
-
- Bill
- --
- INTERNET: bill@Celestial.COM Bill Campbell; Celestial Software
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