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- Path: sparky!uunet!elroy.jpl.nasa.gov!news.claremont.edu!nntp-server.caltech.edu!SOL1.GPS.CALTECH.EDU!CARL
- From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
- Newsgroups: comp.os.vms
- Subject: Re: Question about RMS and MSCP-pair
- Date: 9 Jan 1993 11:59:58 GMT
- Organization: HST Wide Field/Planetary Camera
- Lines: 30
- Distribution: world
- Message-ID: <1imenuINNg7a@gap.caltech.edu>
- References: <1993Jan4.115621.29717@news.th-darmstadt.de>,<61050104@acf3.NYU.EDU>
- Reply-To: carl@SOL1.GPS.CALTECH.EDU
- NNTP-Posting-Host: sol1.gps.caltech.edu
-
- In article <61050104@acf3.NYU.EDU>, tihor@acf3.NYU.EDU (Stephen Tihor) writes:
- >(a) that is not my impression but perhaps I misunderstood Ken bates
- >when we were talking about it. (b) So, there is in fact no tool
- >available to proerply (and in a recomendable or at least guarenteed
- >safe manner) stress test a disk.
-
- Sure, there's a guaranteed safe way to do it:
- 1) Take an image backup of the disk;
- 2) Use the FINDBAD program I just posted to exercise the disk;
- 3) If FINDBAD reports errors, restore the disk from the BACKUP
- saveset; if FINDBAD reports no errors, the disk can simply be
- remounted, as FINDBAD leaves it in its original state in that case.
-
- >I proposed one that would. If BAD
- >worked on DSA disks or if ANAL had a /REWRITE check mode that rewrote
- >every file on disk those might be sufficient.
-
- FINDBAD does both. Well, it doesn't rewrite files; instead, it rewrites
- blocks with the original information. I've never been able to figure out why
- BAD doesn't do this, nor why there's no qualifier for ANAL/MEDIA to tell it
- to simply deal with the logical disk, thus circumventing the problems with DSA
- devices (Digital, are you listening?).
- --------------------------------------------------------------------------------
- Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL
-
- Disclaimer: Hey, I understand VAXen and VMS. That's what I get paid for. My
- understanding of astronomy is purely at the amateur level (or below). So
- unless what I'm saying is directly related to VAX/VMS, don't hold me or my
- organization responsible for it. If it IS related to VAX/VMS, you can try to
- hold me responsible for it, but my organization had nothing to do with it.
-