Dump an Unmounted Journaled UFS Filesystem

[Brandon Allbery]

On Wed, Jul 2, 2014 at 10:14 AM, Warren Block <wblock at wonkity.com> wrote:

> On Tue, 1 Jul 2014, Dan Plassche wrote:
>
>  I understand that using dump is not currently recommended on a mounted
>> journaled UFS2 filesystem.  I prefer to boot from a separate FreeBSD drive
>> for cold backups anyway, so I'm wondering if there are any issues with
>> running dump on an unmounted journaled filesystem?  All the discussions
>> I've seen seem to focus on disabling journaling completely, which I would
>> like to avoid.
>>
>
> The snapshot code in sys/ufs/ffs/ffs_snapshot.c still prevents making
> snapshots on SUJ filesystems.
>
>
What exactly is the point of a snapshot for an *unmounted* ("running dump
on an unmounted journaled filesystem", from above quoted text) filesystem?

-- 
brandon s allbery kf8nh                               sine nomine associates
allbery.b at gmail.com                                  ballbery at sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net