Greetings and happy December :)

I have a 3.5TB ffs mounted at /data which is specified in fstab.

When there is a power outage this file system corrupts (I'll install
another UPS shortly).

Is it possible to fsck_ffs a 3.5TB file system from the boot rescue
environment?

When I've tried before I've got an error like:

"cannot alloc bytes"

If one can get the system to boot up normally, then one can fsck_ffs
with no such error.

Secondly question, is it possible from the rescue environment to edit
the real /etc/fstab file?  Because it would be handy for me in some
cases to do so without booting from the install image.

Another question, is there a Linux like fstab option of 'nofail' for
OpenBSD?  It seems like there isn't, because for me, it would be handy
to specify that for my /data mount.

For now, I've added this to my rc.local file to work around the issue I
sometimes have.

set -e
mount 3b3840fcdf524721.c /data
rcctl -f start vmd
rcctl -f start portmap mountd nfsd
rcctl -f start backuppc wwbackuppc nginx

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