Re: filesystem and `softdep'

[Chuck Yerkes <chuck+obsd@2003.snew.com>]

> Example my web & mail server (on UPS):
> /dev/sd0a / ffs rw 1 1
> /dev/sd1a /home ffs rw,softdep,nodev,nosuid 1 2
> /dev/sd0d /tmp ffs rw,softdep,nodev,nosuid 1 2
> /dev/sd0e /usr ffs rw,nodev 1 2
> /dev/sd1b /var ffs rw,softdep,nodev,nosuid 1 2
> 
> Example my toy dev box (on UPS):
> /dev/sd0a / ffs rw,softdep 1 1
> /dev/sd0f /mnt/junk ffs rw,softdep,nodev,nosuid 1 2
> /dev/sd0e /tmp ffs rw,softdep,nodev,nosuid 1 2
> /dev/sd0g /usr ffs rw,softdep,nodev 1 2
> /dev/sd0h /usr/src ffs rw,softdep,nodev,nosuid 1 2
> /dev/sd0d /var ffs rw,softdep,nodev,nosuid 1 2

I've not had a softdep problem in 2 years of using it.

But I do mount /usr readonly.  Of late, I mount /dev/
as MFS and populate it so I can run / as readonly.

/tmp lives on swap (mfs, with limits).
/var and /home and the data need to be r/w.
softdep is faster.

I do notice that if I delete a large file, it
takes a sync or two for the size to appear in
df.  But that's cosmetic.

Quoting Marco Peereboom (slash@peereboom.us):
> It's a laptop right? That means it has a built in UPS so turn it on :-)

Or it loses power regularly.
> And next reboot (or remount) comes around and writes are significantly faster!

UFS2 with snapshots is quite nice too.  Being able to not wait for
500GB-1TB of disk to fsck is desirable.  Given that I can get 500GB
with 2 disks these days, it gets more and more important.