Messages in this thread | | | From | Duncan Sands <> | Subject | Htree ate my hard drive, was: post-halloween 0.2 | Date | Thu, 31 Oct 2002 07:27:52 +0100 |
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> EXT3 Htree support. > ~~~~~~~~~~~~~~~~~~~ > The ext3 filesystem has gained indexed directory support, which offers > considerable performance gains when used on filesystems with large > directories. In order to use the htree feature, you need at least version > 1.29 of e2fsprogs. Existing filesystems can be converted using the command > "tune2fs -O dir_index /dev/hdXXX" The latest e2fsprogs can be found at > http://prdownloads.sourceforge.net/e2fsprogs
I ran this (tune2fs -O dir_index /dev/hdXXX).
After a bit of switching back and forth between 2.4.19 and 2.5.44, fsck was run while booting 2.4.19 (the usual check because of >30 mounts). There was a message about optimizing directories. Booting continued but (big surprise) X refused to run. It turned out that some device files had vanished. Very strange. On rebooting, fsck found a gazillion bad inodes. They all turned out to be from the 2.5.44 tree - poetic justice I suppose! But this did not suffice. Rebooting, I got "optimizing directories" again. Next fsck showed up more dud inodes. After a few cycles of this, I ran
tune2fs -O ^dir_index /dev/hdXXX
to remove htree support. No problems since then.
Duncan.
PS: UP, no preempt.
tune2fs 1.30-WIP (30-Sep-2002) Filesystem volume name: <none> Last mounted on: <not available> Filesystem UUID: ee433ceb-6b14-45b1-894c-2a8aad1e280f Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal needs_recovery Filesystem state: clean Errors behavior: Unknown (continue) Filesystem OS type: Linux Inode count: 290816 Block count: 2315368 Reserved block count: 115768 Free blocks: 871842 Free inodes: 36718 First block: 0 Block size: 4096 Fragment size: 4096 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 4096 Inode blocks per group: 128 Last mount time: Thu Oct 31 06:37:46 2002 Last write time: Thu Oct 31 06:37:46 2002 Mount count: 7 Maximum mount count: 30 Last checked: Wed Oct 30 11:50:37 2002 Check interval: 0 (<none>) Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 128 Journal UUID: <none> Journal inode: 493 Journal device: 0x0000 First orphan inode: 139500
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