Re: fss status (was: selectively disabling atime updates?)

["J. Hannken-Illjes" <hannken%eis.cs.tu-bs.de@localhost>]

On Jun 11, 2012, at 5:17 PM, Edgar Fuß wrote:

>> No, snapshots are supported in 6.0.
> Ah, great!
> Someone should adjust the ffsconfig(8) man page, then:
> 
> $ man fssconfig | tail -5
> BUGS
>     The fss(4) driver is experimental.  Be sure you have a backup before you
>     use it.
> 
> NetBSD 6.0_BETA                January 31, 2005                NetBSD 6.0_BETA

Thats a bug.

>> Taking a file system external snapshot should be a quick task
> That means a ffsconfig(8) with the backup argument pointing to a
> different file system?
> I assume the backup file will roughly need to hold the amount of data
> written to the original fs while the snapshot is active. Is it true that
> if the backup file is lost or the fs containing it runs out of space
> I only lose the snapshot and the original data is unaffected?

Yes and yes.

--
Juergen Hannken-Illjes - hannken%eis.cs.tu-bs.de@localhost - TU Braunschweig 
(Germany)