Date: Wed, 2 Jul 2014 09:50:03 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Brandon Allbery <allbery.b@gmail.com> Cc: Dan Plassche <dplassche@gmail.com>, freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: Dump an Unmounted Journaled UFS Filesystem Message-ID: <alpine.BSF.2.11.1407020948280.90369@wonkity.com> In-Reply-To: <CAKFCL4Wo%2BZU6PEVjRyMJoRiHrLftb4o7sLja842YJn__4aXW8A@mail.gmail.com> References: <CAOD8YqoB%2BZpS9XBgFf2=WjWmsG5f9MsiwSis1cB3irKOOz=ZSw@mail.gmail.com> <CAOD8Yqq5O1ZJ1RwGDTLnLtcvR0MhbLZEfWnOihaJL0xz875pOA@mail.gmail.com> <alpine.BSF.2.11.1407020755250.89636@wonkity.com> <CAKFCL4Wo%2BZU6PEVjRyMJoRiHrLftb4o7sLja842YJn__4aXW8A@mail.gmail.com>
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On Wed, 2 Jul 2014, Brandon Allbery wrote:
> On Wed, Jul 2, 2014 at 10:14 AM, Warren Block <wblock@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?
There isn't a reason to snapshot an unmounted filesystem, just trying to
be complete.
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