There are no error messages on the console. This box does do a fair amount of work and has no other issues. The box has a second VG consisting of SCSI drives. If there were memory problems I would expect this VG to contain errors too. I did a MD5sum on the physical device twice and it returned the same sum (while doing this on a file in a filesystem under LVM returns different values each time). Are there any good indepth tools that could analyze the structure of the volume? Everything I've seen sofar seems to just offer a summary. The box still has not been rebooted as I want to understand the problem first. I'm looking at using LVM for a production server and need to find out whats wrong to go ahead with that project. On Tue, 2002-02-05 at 13:41, Andreas Dilger wrote: > On Feb 05, 2002 13:11 -0500, Erik Zweers wrote: > > The system was repaired and believed to be running properly, until > > yesterday where we discovered that some of our ISO's were wrong, > > consistently wrong in inconsistent locations. I've pasted in a record > > of the symptoms. If anyone has any advice on what else to diagnose (if > > your intrested in what is wrong) or how to repair It would be greatly > > appreciated. > > I would suspect RAM or IDE problems. If LVM is broken, it will stay > broken, and if it is working it will stay working in the absence of > other problems. The failure symptoms would not look like this. > > > I have not rebooted the machine yet, wanting to be sure that any > > diagnoses that can be done is done. > > Any output in dmesg? > > > [root@ike iso]# cmp -l enigma-i386-disc1.iso ~carl/enigma-i386-disc1.iso > > 2549832 77 67 > > 13431928 177 167 > > 14489440 376 366 > > 27451404 177 173 > > 33149724 376 336 > > 86298228 177 167 > > 116907524 372 332 > > 119130964 77 67 > > 121124171 376 356 > > > > > > [root@ike iso]# cmp -l enigma-i386-disc1.iso ~carl/enigma-i386-disc1.iso > > 2549832 77 67 > > 11455071 177 167 > > 13431928 177 167 > > 18043044 277 273 > > 24780964 277 273 > > 86298228 177 167 > > 94133044 370 330 > > 106966431 177 167 > > Looks exclusively like single-bit errors. Either RAM or IDE cable/driver. > If it was RAM you would also have oopses or errors elsewhere. Try turning > off UDMA on the drive, update the IDE driver, new cable, etc. > > > | wc -l 62 > > [root@ike iso]# ls -l enigma-i386-disc1.iso > > -rw-r--r-- 1 root root 677961728 Feb 4 20:31 > > enigma-i386-disc1.iso > > > > [root@ike iso]# fsck -n /dev/ide/iso > > Parallelizing fsck version 1.23 (15-Aug-2001) > > e2fsck 1.23, 15-Aug-2001 for EXT2 FS 0.5b, 95/08/09 > > Warning! /dev/ide/iso is mounted. > > /dev/ide/iso: clean, 24/1281696 files, 1351397/2560000 blocks > > Given that you only have single-bit error rates in the order of 1/10^7, > the chance of such an error happening in the ext2 metadata is unlikely. > > Cheers, Andreas > -- > Andreas Dilger > http://sourceforge.net/projects/ext2resize/ > http://www-mddsp.enel.ucalgary.ca/People/adilger/ > > _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
