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- Newsgroups: comp.os.vms
- Path: sparky!uunet!elroy.jpl.nasa.gov!usc!rpi!batcomputer!munnari.oz.au!uniwa!cujo!cc.curtin.edu.au!zrepachol
- From: zrepachol@cc.curtin.edu.au
- Subject: Re: Long standing apparent Backup or XQP problem
- Message-ID: <1993Jan7.231426.1@cc.curtin.edu.au>
- Lines: 25
- Sender: news@cujo.curtin.edu.au (News Manager)
- Organization: Curtin University of Technology
- References: <9301052330.AA21443@relay1.UU.NET>
- Date: Thu, 7 Jan 1993 14:14:26 GMT
-
- In article <9301052330.AA21443@relay1.UU.NET>, gleeve@galaxy.dnet writes:
- > When making up masters for the VMS/L&T sig tapes at the recent
- > DECUS symposium, I encountered a problem making a Backup
- ...
- > Doing a BACKUP/LIST of [somewhere]a.bck/save
- >
- > revealed errors recovered by XOR groups, and errors of lost blocks
- > in files within the saveset, EVEN THOUGH there were NO errors reported
- > by Backup during creation of the savesets, nor any hardware errors
- > (via show error) reported on the device.
- >
-
- Bingo! I had this problem backing up from a uVaxII to a 4500 via LAVC. The
- problem was consistant, repeatable ( modulo the number of error ), and *VERY*
- dependant on load. IE, Decterm in and no errors, use decterm to 'set host',
- ave of 4-6 errors per RA-81, OPA0 6-10 errors...
-
- My suspicion is a race condition in the SCS/MSCP/QIO code. This has been an
- open problem report since Aug 92. 5.5 and 5.5-1 BTW.
-
- I tryed /analing the savesets, but bloody backup hides the error!! Any one have
- a hacked version that will dump the blockes in error they can send me?
-
- ~Paul
-
-