On Thu, 5 Sep 2002, Ian Dowse wrote: > In message <[EMAIL PROTECTED]>, Bruce Evans writes: > >> * drop support for 4K block sizes completely, but this breaks > >> backwards compatibility > > > >I use patches like the following for the sanity checks: > > I think there may be other problems that are triggered by using <8k > blocks on -current too. Last time I tried 4k blocks (pre-UFS2), the > snapshot code would cause a panic when trying to allocate a single > 4k block to fit the 8k superblock (the machine then got stuck in a > reboot-fsck-panic cycle until interrupted and manually fsck'd).
I sometimes run a simple benchmark which tests most combinations of block and fragment sizes starting with 4096-512. This didn't show anoy problems for 4k blocks either pre- or post-ufs2. But it doesn't test snapshots, actual ufs2 filesystems, or anything else that is newer than soft updates, or full filesystems... Bruce To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message