Date: Tue, 3 Oct 2000 16:12:31 +0100 From: "Stephen C. Tweedie" <sct@redhat.com> To: linux-fsdevel@vger.kernel.org Subject: Final ext3-0.0.4 test-only release Hi, OK, ext3 with metadata-only journaling is now running as reliably as I can make it without making an incompatible change to the journal format. A usable release absolutely requires a jfs superblock format change, so I'm releasing 0.0.4c purely as a WIP snapshot before the superblock changes go in. ext3-0.0.4c is now on *.kernel.org and on zen2. Look for it in ftp.*.kernel.org:/pub/linux/kernel/people/sct/ext3/test-DONTUSE/ or ftp.uk.linux.org:/pub/linux/sct/fs/jfs/test-DONTUSE/ This code should work fine under normal running, but IT CAN CORRUPT DATA on a crash. Anyone wanting to start testing it is welcome to. Treat this ONLY as a demo snapshot for testing purposes!!!!! I'm now starting the 0.0.5 branch, which will include the superblock changes necessary to make recovery over crashes work with the metadata-only journaling enabled. Converting up will be possible easily. Converting back from 0.0.5 to a 0.0.3-compatible format will require unmounting, remounting ext2 and recreating the journal. 0.0.5 will run 0.0.3 filesystems without converting, but only when using full-journaling, and 0.0.5 will not create 0.0.3-compatible jfs superblocks. OK, you've had all the warnings, so if you do want to go ahead and give 0.0.4c a test, thanks and let me know how it goes. There has been no performance tuning at all done on this version, but so far I'm getting speeds of between 75% (running 30-client dbench on a 200MB box) and 100% (running straight sequential writes) of ext2 write performance on the new code. Cheers, Stephen - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@vger.kernel.org