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...


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