On Fri, 22 Sep 2006 12:27:23 +0000 (UTC) "Peter" <[EMAIL PROTECTED]> wrote:
> On Fri, 22 Sep 2006 14:02:44 +0200, Thomas Kuther wrote: > > > On Thu, 21 Sep 2006 11:18:41 +0000 (UTC) > > "Peter" <[EMAIL PROTECTED]> wrote: > > > >> On Thu, 21 Sep 2006 15:02:01 +0400, Vladimir V. Saveliev wrote: > >> > >> > Hello > >> > > >> > On Wednesday 20 September 2006 22:47, Peter wrote: > >> >> I booted from a non-reiser4 partition in order to make a backup > >> >> of my main / which was a r4 partition. > >> >> > >> >> After the backup, I unmounted the drive explicitly, then > >> >> rebooted. > >> >> > >> >> I did not use the backed up drive for anything except tar-ring > >> >> its files. > >> >> > >> >> On next boot to the r4 / partition, all kinds of file not found > >> >> errors occurred. I booted again to my non-r4 partition, and ran > >> >> fsck.reiser4 --check -y there were fatal errors on my r4 /. > >> >> > >> >> The backup was fine. I downgraded back to reiserfs which does > >> >> not exhibit this problem. > >> >> > >> >> I have not experienced any problem with other r4 partitions. > >> >> Just /. /home, /tmp, /src, etc. are fine. > >> >> > >> >> Unfortunately, I don't have time to keep wondering where the > >> >> problem is or why. Perhaps it's the kernel or the init scripts. > >> >> Nonetheless, the instability of whatever the problem is is > >> >> unnerving. > >> >> > >> > > >> > Please provide information about which kernel and which reiser4 > >> > did you use. Am I correct that you were trying to run gentoo on > >> > reiser4? > >> > >> Yes, Vladimir. When making the backup, I was not running Gentoo at > >> all. I was running Slackware 10.2. I booted into Slackware with the > >> beyond patchset (ck superset) based on 2.6.17.11 with the reiser4 > >> 2.6.17-3 patch. All of the work on backup mount and unmount was on > >> Slackware. It was when rebooting back into Gentoo (with the init > >> and base layout which DID NOT CAUSE a boot problem) that the fatal > >> errors occurred. Interestingly, and maybe this is helpful, only > >> the / partition seems to be affected. I have observed no > >> problematic behavior with any of the other three partitions I used > >> r4 for. In fact, even though I downgraded / to reiserfs3, the > >> other r4 partitions work fine. Please let me know if I can provide > >> additional information. > >> > > > > 2.6.17-beyond includes -ck1 which includes fcache which is totally > > evil for reiser4. The old fscache patch in .17-ck1 tends to kill > > reiser4 /usr here (I assume your /usr is in / then) when > > rebooting/umounting the partition. Also newer -mm is evil and > > umount on /usr completely fails here, i have to hard reset the box, > > but here the partitions stay alive, with the older fcache i had to > > --build-sb and --fix it, and then remerge all stuff that was lost. > > Oh and this happens even i didn't enable fcache in kernel config, > > just the existance of the patch is enough. > > Strangely it's reproducably and only /usr. So if you run the /usr > > folder on a reiser4 partition, do NOT use -mm, or at least good luck > > trying to break out fcache. Reversing the fcache patch from -beyond > > is easy, just get the broken-out from -ck and patch -R it. > > > > HTH > > Tom > > Thanks for the tip, Tom! You're the second person (unless you're the > same one on the gentoo forums) to mention this. I suspect, with your > use of the word evil, you're the same! :) > > Nonetheless, I lost patience, and did not want to be in a changing > beta situation as kernels, patches, etc. are all changing at > different rates of speed. I found this bug both annoying and > disconcerting. I have one r4 partition left, and since it's not / > there appear to be no problems. > > I assume the various parties involved are all aware of this? > Yes, that was me :) As i seemed to be the only person hitting that bug, i didn't mention it here on the list nor on LKML. I just warned the users in the -beyond and -no sources threads some releases ago ... .17-beyond1 thread IIRC... and stopped using fcache patched kernels, because i like my /usr/portage flying on a reiser4 partition ;) Regards Tom
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