Date: Wed, 31 Aug 2011 20:02:38 +0200 From: "Hartmann, O." <ohartman@zedat.fu-berlin.de> To: Garrett Cooper <yanegomi@gmail.com> Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: howto: enabling journaling on softupdates Message-ID: <4E5E773E.4050806@zedat.fu-berlin.de> In-Reply-To: <CAGH67wR_MJY1pq23t%2BPLbNJq08o=wSJZ493AW_YRe_n45qDQ0A@mail.gmail.com> References: <4E5E70AF.2080806@zedat.fu-berlin.de> <CAGH67wR_MJY1pq23t%2BPLbNJq08o=wSJZ493AW_YRe_n45qDQ0A@mail.gmail.com>
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On 08/31/11 19:56, Garrett Cooper wrote: > On Wed, Aug 31, 2011 at 10:34 AM, Hartmann, O. > <ohartman@zedat.fu-berlin.de> wrote: >> I try to find a suitable reading/howto for how to enable softupdates >> on >> UFS2 filesystems. > Agreed. Added to http://wiki.freebsd.org/DocsFor9x . Many thanks. >> 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 wrong). Great! >> 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. > > ... > >> I hit was "-J", the option for enabling softupdate via GEOM gjournal. > Yeah, it's confusing.. > >> Is there any special preparation to bring up an existing filesystem >> securely into >> journaling? As I read the blogs and emails in the list, it should be >> as simple >> as booting into single user mode, enabling on all partitions in >> question (even / ?) > Yes. > >> via -j softupdate-journaling, runing a foreground fsck, reboot ... >> that's it? > If all goes well, that was the entire process IIRC. To late ... ;-) I couldn't resist the temptation, shut down the box, reboot single user mode, enabled "-j" (the lower letter `j' !!!), did a full fsck -y ... rebooted ... >> Or is there any other additional preparation like mentioned in gjournal >> (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) :). > >> Thanks for patience and repsonding, > Sure :)! > -Garrett > _____________ ... and here I am again with SU+J on my box ;-) Tomorrow, I will perform this step on all servers. I guess it's a "worth having". Oliver
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