gjournal & fsck

Brian McCann bjmccann at gmail.com
Thu Aug 28 14:43:59 UTC 2008

On Thu, Aug 28, 2008 at 10:34 AM, Ivan Voras <ivoras at freebsd.org> wrote:
> Brian McCann wrote:
>> Hi all.  I'm having some problems with several servers I've built
>> recently (7.0-RELEASE) that are using gjournal.  I had two reboot a
>> few days ago (un-related to FreeBSD problems I think)...but when they
>> came back up, the file systems wouldn't mount since they were not
>> clean.  Now, I understand that UFS knows nothing about the fact that
>> it's journaled, and the journaling knows nothing about UFS...but it's
> Actually UFS needs to know about gjournal for just this purpose. There's
> a special option to newfs that tells the file system to be aware of
> gjournal and it should request fscks.
>> my understanding that by using gjournal, you should really never need
>> to fsck a file system.  However, the only way to get them to mount is
>> by doing the fsck.  Is there something else I should be doing instead
>> of fsck?
> man 8 tunefs

Yes...I apologize...I did that when I built the file system with
"newfs -J".  Here's the tunefs -p output for one of the file systems:

# tunefs -p /dev/da2.journal
tunefs: ACLs: (-a)                                         disabled
tunefs: MAC multilabel: (-l)                               disabled
tunefs: soft updates: (-n)                                 disabled
tunefs: gjournal: (-J)                                     enabled
tunefs: maximum blocks per file in a cylinder group: (-e)  2048
tunefs: average file size: (-f)                            16384
tunefs: average number of files in a directory: (-s)       64
tunefs: minimum percentage of free space: (-m)             8%
tunefs: optimization preference: (-o)                      time
tunefs: volume label: (-L)

I'm concerned about this because the ones I've had problems with
recently are 1.1TB arrays...I've got 2 8.6TB arrays that are journaled
as well...and if I ever have to fsck them...that could take 1/2 the

Any other thoughts?

Thanks for the help so far Ivan!

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