On Mon, 3 Sep 2001, Gonyou, Austin wrote:
> One quick not on this, is there anything I can do kernel wise to prevent
> this without striking a crapload of overhead on the system?
No, all metadata journaling filesystems have this. ReiserFS has it and I
suspect that JFS can do this as well. If I ever get the NCR MP-RAS box to
be out of production I could test this with Veritas as well.
I hate to say it but this a general metadata jfs problem/feature. It needs
a smarter kernel to make it go to disk faster when the box is not loaded.
> > -----Original Message-----
> > From: Gonyou, Austin
> > Sent: Monday, September 03, 2001 12:41 PM
> > To: 'Seth Mos'; Gonyou, Austin; XFS mailing list
> > Subject: RE: System lock while accessing files causes file corruption
> >
> >
> > That's all well and good..but what about the configuration
> > files? They are text and are not redundant in the same way. I
> > know it's been done to death..and I've read a lot of this
> > stuff, but even after making thanges, etc, especially if I
> > use logbufs > 2, I can make this happen at will. That's why
> > I've got concerns. I know about the points Keith made, and
> > very valid in this case especially, but my major concern is
> > deploying a TB size db only to get taken down that my configs
> > are messed up. (yes, I know that's what backups and CVS are
> > for) but that's not acceptable when talking about my primary
> > FS. I'm going to go through as many iterations of this as I
> > can to see if I can narrow down exactly what and where, what
> > hardware, etc. We're about to do a major deployment and I'm
> > just trying to do due dilligence, beyond the FAQ and random
> > mails. Thanks for listening, and this can certainly come
> > off-list if you feel that's best. I really don't want to beat
> > a dead horse anymore than I have to. Assurance of success in
> > this respect is very important. We don't have a lot of
> > storage to throw around.
> >
> > --
> > Austin Gonyou
> > Systems Architect, CCNA
> > Coremetrics, Inc.
> > Phone: 512-796-9023
> > email: austin@xxxxxxxxxxxxxxx
> >
> > > -----Original Message-----
> > > From: Seth Mos [mailto:knuffie@xxxxxxxxx]
> > > Sent: Sunday, September 02, 2001 7:18 PM
> > > To: Gonyou, Austin; XFS mailing list
> > > Subject: Re: System lock while accessing files causes file
> > corruption
> > >
> > >
> > > At 18:16 2-9-2001 -0500, Gonyou, Austin wrote:
> > > >Why is this? If I open a file, text/otherwise and the power
> > > actually fails,
> > > >(i turn it off), once in a while I get a corrupt file. Why
> > > is this? What
> > > >would happen if I was writing to some Oracle filesystems and
> > > this situation
> > > >occurred? Please advise.
> > >
> > > See the http://oss.sgi.com/projects/xfs/faq.html#nulls
> > >
> > > A database would survive since most have their own buffering and
> > > transaction scheme.
> > >
> > >
> > > --
> > > Seth
> > > Every program has two purposes one for which
> > > it was written and another for which it wasn't
> > > I use the last kind.
> > >
> >
>
>
|