John, Vasiliy, Thanks for the input. We managed to figure out the problem after swapping all the items. It seems the SCSI host adapter is giving us the problem. Cheers. -Ikmal On 2/25/07, Vasiliy Boulytchev <vasiliy@xxxxxxxxxxxxxxxx> wrote:
Agreed, I was thinking of cables as well. See if you get better performance when you replace the cables :) Good luck John R Pierce wrote: > > Hairul Ikmal Mohamad Fuzi wrote: >> Hi, >> >> Currently we are running CentOS 4.x on a 2-way Opteron machine. >> This machine, through a SCSI host adapter (Adaptec), is connected to a >> 2TB storage unit (an external RAID-5 disk array) >> >> Until our recent unintentional power trip, everything was fine and >> smooth. >> We have been experiencing complication accessing the storage ( it >> could be either intermittent filesystem error, partition could not be >> mounted in read-write mode, unacceptable writing speed, etc ), >> especially when we start to 'write' on the storage. >> >> After a few check, we are suspecting either : >> >> 1) the storage unit (but the storage control panel did not report any >> disk/raidset failure) is failing or, >> 2) the SCSI host adapter is failing, or >> 3) the filesystem itself is corrupted (we did 'fsck.ext3 -v -f' but it >> turned out it did not find any errors) > > > or 4) scsi cabling. I see some scsi transmission errors in there. > About the only way I know to diagnose something like this would be to > swap parts... I'd swap the controller card and see if the problems go > away, then try the cable, then try the storage controller. if one of > these things fixes the problem back the other changes out (ie put the > original card back, etc). > _______________________________________________ > CentOS mailing list > CentOS@xxxxxxxxxx > http://lists.centos.org/mailman/listinfo/centos _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos
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