Date: Fri, 9 Sep 2011 10:53:00 -0700 From: Kevin Oberman <kob6558@gmail.com> To: Pawel Jakub Dawidek <pjd@freebsd.org> Cc: FreeBSD Stable <freebsd-stable@freebsd.org>, Eugene Grosbein <egrosbein@rdtc.ru> Subject: Re: gmirror+gjournal often makes inconsistens file systems Message-ID: <CAN6yY1sh89MSZ2tkmdadP3HCTxghNm5XJ3A83S40BU0H=xjaLg@mail.gmail.com> In-Reply-To: <20110909133509.GH1639@garage.freebsd.pl> References: <4E69A152.6090408@rdtc.ru> <4E69EB15.50808@rdtc.ru> <20110909133509.GH1639@garage.freebsd.pl>
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On Fri, Sep 9, 2011 at 6:35 AM, Pawel Jakub Dawidek <pjd@freebsd.org> wrote:
> On Fri, Sep 09, 2011 at 05:31:49PM +0700, Eugene Grosbein wrote:
>> Please explain if such partitioning is supported?
>> physical drive - geom_mirror - geom_journal - geom_part_mbr - geom_part_bsd - journalled UFS2
>
> No. It will only work properly for journaling UFS if UFS is placed
> directory on gjournal provider. You configured slices and several
> pratitions on one gjournal provider, which simply cannot work, as
> one UFS file system has to talk to one gjournal provider.
>
>> If not, mounting such UFS2 should warn us, shouldn't it?
>> No warnings now.
>
> It might be a bit hard to tell, but it could be at least better
> documented.
Yes, the documentation could be better, especially since the
gjournal(8) man page example
where the entire disk (da0) is tied to a single journal. At least
change the example to read:
gjournal load
gjournal label da0p5
newfs -J /dev/da0p5.journal
mount -o async /dev/da05.journal /mnt
It MIGHT be better to use da0s1g, but I think we want to move toward
GPT, so I suggest
that type of example. Either make it clear that a file system, not a
drive, is the appropriate
application. I am quite aware of this as I just created my first
gjournal file system last night
and was briefly confused by this.
--
R. Kevin Oberman, Network Engineer - Retired
E-mail: kob6558@gmail.com
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