Bohdan Tashchuk wrote:
> --- On Wed, 1/6/10, Alexander Hall <alexan...@beard.se> wrote:
>> You should be able to get the same result using proper values for
>> fs_passno in /etc/fstab.
>
> One would hope so, but I don't think that's the case.
>
> First, the man page says
>
> the root filesystem should be specified with a fs_passno of 1, and
> other filesystems should have a fs_passno of 2. Filesystems within a
> drive will be checked sequentially, but filesystems on different
> drives will be checked at the same time to utilize parallelism
> available in the hardware.
>
> Second, in fsck/preen.c I see a construct like this
>
> for (passno = 1; passno <= 2; passno++) { ... ... if (passno == 2 &&
> fs->fs_passno > 1) {
Oh yes it seems you're right, and it goes a long way back too. I wonder
if it ever worked the way I've always interpreted the man page...
>
> For some reason, many years ago, fsck was "optimized" to run in
> parallel for "efficiency". It's unfortunate that the fstab file can't
> be used to provide better control over the parallelism.
