On Wed, 2009-04-15 at 13:42 +0000, Theodore Ts'o wrote: > I'll note that part of the problem is that it doesn't seem to be > trivially reproducible even on Ubuntu Jaunty.
It seems to reproduce here when two processes are removing files/trees from the same filesystem. And as another comment suggests, my filesystem is pretty damn full (98%) too, so maybe that's the key factor. > On my side, I still need to figure out why a Ubuntu Jaunty kernel built > with my custom "no modules" config causes a black screen lockup when > booting on an Ubuntu Intrepid userspace --- or find room to do an > install of Ubuntu Jaunty beta and try to reproduce the problem myself. > Oh, and I have to get my taxes filed too, and expense reports, and lots > of other things related to my day job (which doesn't include ext4; it's > been a long time since anyone has paid me to work on ext4 as my day job > -- it's something I do in my copious spare time in the evenings or when > I have a few spare moments). I hear ya. I didn't at all mean to suggest that you (Ted) should be working to fix this (indeed, your volunteered contributions on the bug are significant in it's progress), but hopefully somebody who's getting paid to work on Ubuntu Linux could devote some time to it. Ted: As to your other question about allocation during removal, I tend to doubt in my case there was. This is an archive/backup filesystem in my case and the parallel (but not racing) deletes happen after the backup run, so there shouldn't be any allocation happening at that time. Ted: FWIW, you might (or might not) recall we discussed the speed of deleting hardlink trees in ext3 vs. XFS a few months ago when I was switching to XFS specifically for deletes speed... well, a few XFS crashes (and one almost 24 hour xfs_repair) later I am back in the ext* fold on ext4 and happy to report that XFS was just as slow as ext3 and ext4 beats them both hands down at deleting big (many) hard linked trees of files. -- Soft lockups (freezes) when deleting files from ext4 partitions on 2.6.28 https://bugs.launchpad.net/bugs/330824 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
