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Date:      Wed, 31 Aug 2011 10:56:50 -0700
From:      Garrett Cooper <yanegomi@gmail.com>
To:        "Hartmann, O." <ohartman@zedat.fu-berlin.de>
Cc:        freebsd-current <freebsd-current@freebsd.org>
Subject:   Re: howto: enabling journaling on softupdates
Message-ID:  <CAGH67wR_MJY1pq23t%2BPLbNJq08o=wSJZ493AW_YRe_n45qDQ0A@mail.gmail.com>
In-Reply-To: <4E5E70AF.2080806@zedat.fu-berlin.de>
References:  <4E5E70AF.2080806@zedat.fu-berlin.de>

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On Wed, Aug 31, 2011 at 10:34 AM, Hartmann, O.
<ohartman@zedat.fu-berlin.de> wrote:
>
> =A0 I try to find a suitable reading/howto for how to enable softupdates
> =A0 on
> =A0 UFS2 filesystems.

Agreed. Added to http://wiki.freebsd.org/DocsFor9x .

> As I could see, SU+J is enlisted to be enabled by default in 9.0-RELEASE.

Yes, it is on by default in bsdinstall (and I think in newfs? I could be wr=
ong).

>   What is the status quo of that? I've several active systems running
>   UFS2 on their system disks while data/home/mass storage is ZFS.

>   Are their any issue with SU+J?

I haven't been tracking what's been going on, but several bugfixes
have gone in in the last couple of months post-SUJ. There might be
some bugs in the work, but most standard operations work out of the
box for me at least.

...

> =A0 I hit was "-J", the option for enabling softupdate via GEOM gjournal.

Yeah, it's confusing..

> =A0 Is there any special preparation to bring up an existing filesystem
> =A0 securely into
> =A0 journaling? As I read the blogs and emails in the list, it should be
> =A0 as simple
> =A0 as booting into single user mode, enabling on all partitions in
> =A0 question (even / ?)

Yes.

> =A0 via -j softupdate-journaling, runing a foreground fsck, reboot ...
> =A0 that's it?

If all goes well, that was the entire process IIRC.

>   Or is there any other additional preparation like mentioned in gjournal
> =A0 (async mount)?

ENOCLUE (because I'm not aware of that with gjournal -- the last time
I tried setting it up things didn't work too well for me) :).

> =A0 Thanks for patience and repsonding,

Sure :)!
-Garrett



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