|Subject:||Re: Attempt to Access Beyond End of Device|
|From:||Federico Sevilla III <jijo@xxxxxx>|
|Date:||Wed, 12 Sep 2007 13:17:11 +0800|
|Cc:||Alec Joseph Rivera <agi@xxxxxx>|
|References:||<email@example.com> <46E5670E.firstname.lastname@example.org> <email@example.com> <46E570C4.firstname.lastname@example.org> <email@example.com>|
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Quoting Bhagi rathi <jahnu77@xxxxxxxxx>:
I hope your problem with xfs_repair is resolved.
It wasn't an XFS-centric problem, after all. Running cfdisk on the system would likewise fail because the partition had been set beyond the disk boundary. I'm not sure about how this happened. Either the controller reported a large size to Debian during installation, or Debian mis-read the reported size on installation. At any rate, redoing the entire installation (including RAID setup) with the same procedure resulted in the correct (ie: smaller) disk boundaries, so the server is back up with the new size.
Please set your incore log buffer size as a sub-multiple of your log size, log size % in core buffer size should be zero (modulo is the operator). This is advisable, though not mandatory. Having huge incore buffer size is of no help if your on disk log size isn't big. This might solve your problem with repair and recovery after some reboots. Make sure that total incore buffer size is less than on disk logsize.
Previously, we were using version=1 logs with size=32768b, and then mounted using logbufs=8,logbsize=32768.
Now, we are using version=2 logs with size=32768b, and then mounted using logbufs=8,logbsize=256k.
If I understand your advise correctly, I should not mount with logbsize > 32k, or I should create the filesystem using version=2 logs with size=256k. Is this understanding correct?
Are there generic optimization suggestions for I/O-intensive servers in general, as far as on-disk and in-memory log buffer sizes are concerned?
Thank you very much.
-- Federico Sevilla III F S 3 Consulting Inc. http://www.fs3.ph
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