Hi Andreas, Stephen, We have a lot working now: 1. journal recovery and initialization stuff is working 2. transactions go to the disk 3. infrastructure is there to do transcactions 4. ext3_create is fully operational. The problems we have seen mostly have to do with differences in which buffer heads are being initialized. Things like b_transaction etc. were not cleaned up. There are more buffer head problems around, but we are debugging them quickly now. You can play with this, make a loop device, mount it and to things like touch (NOTE: only file creations have been handled so far). If you re-mount a dirty ext3 image, it will recovery. The first few always work, but at present things go wrong when bdflush kicks in. We left a patch at: ftp.inter-mezzo.org:/pub/ext3/242-ac26-1um.ext3-ph5_4.patch.gz In the patch there are markers of the form @@@ with your names, asking for help! - Peter -