Re: Enabling gjournal without destroying a filesystem?
On Fri, 19 Aug 2011 20:48:33 +0200 Patrick Lamaiziere patf...@davenulle.org wrote: Anyway there was no other way to avoid a long fsck (until SU+Journal in 9.0). Speaking of SU+J: I do happen to be running 9.0-BETA1, and am seeing output from fsck where it at first appears it's going to take advantage of journaling and then dismisses it due to an out-of-date journal (which is why I started investigating gjournal in the first place). Am I doing something wrong here? Can anyone recommend a fix? -- Conrad J. Sabatier conr...@cox.net ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Enabling gjournal without destroying a filesystem?
Le Thu, 18 Aug 2011 17:43:41 -0500, Conrad J. Sabatier conr...@cox.net a écrit : Hello, I'm assuming there are definite advantages to using gjournal over softupdates? If the file system is large, it avoids a very long fsck. I use gjournal since 7.2 and never had any problem (and I always shutdown my small soekris box by removing the power plug...) Regards. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Enabling gjournal without destroying a filesystem?
On Fri, Aug 19, 2011 at 1:30 PM, Patrick Lamaiziere patf...@davenulle.org wrote: Le Thu, 18 Aug 2011 17:43:41 -0500, Conrad J. Sabatier conr...@cox.net a écrit : Hello, I'm assuming there are definite advantages to using gjournal over softupdates? http://www.usenix.org/event/usenix2000/general/seltzer.html If the file system is large, it avoids a very long fsck. I use gjournal since 7.2 and never had any problem (and I always shutdown my small soekris box by removing the power plug...) Regards. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Enabling gjournal without destroying a filesystem?
Le Fri, 19 Aug 2011 14:18:26 -0400, Alejandro Imass a...@p2ee.org a écrit : hello, I'm assuming there are definite advantages to using gjournal over softupdates? http://www.usenix.org/event/usenix2000/general/seltzer.html gjournal can improve the performances in some cases (small files) : http://osdir.com/ml/freebsd-geom/2006-06/msg00013.html Anyway there was no other way to avoid a long fsck (until SU+Journal in 9.0). Regards. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Enabling gjournal without destroying a filesystem?
Is there any way to enable gjournal on an already existing filesystem without destroying it? I'm assuming there are definite advantages to using gjournal over softupdates? -- Conrad J. Sabatier conr...@cox.net ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Enabling gjournal without destroying a filesystem?
On Thu, Aug 18, 2011 at 5:43 PM, Conrad J. Sabatier conr...@cox.net wrote: Is there any way to enable gjournal on an already existing filesystem without destroying it? You can't really(it can be done but requires exception circumstance). If you didn't take these steps during initial install you're best off starting from scratch. These is a guide on how to use sysinstall to create a system gjournaled from the start: http://www.freebsd.org/doc/en_US.ISO8859-1/articles/gjournal-desktop/ I'm assuming there are definite advantages to using gjournal over softupdates? There are some positives and negatives to it. It's importance is decreasing in FreeBSD 9 as SU+J will be possible. -- Adam Vande More ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Enabling gjournal without destroying a filesystem?
Conrad J. Sabatier conr...@cox.net wrote: Is there any way to enable gjournal on an already existing filesystem without destroying it? Yes, provided the existing filesystem is not using the last block of its provider (partition), but you'll have to put the journal on a separate provider from the data. See the explanation of the -s switch in gjournal(8) to determine the necessary size of the journal provider, but don't specify -s in the gjournal label command because the size of the journal is implicitly set by the the size of its provider when separate from the data provider. (-s is used when a single provider is used for both journal and data.) Also read the explanation of the -f switch, but don't actually specify -f unless you are sure you know what you're doing :) Something like this [untested]: # umount [existing filesystem] # gjournal label [existing filesystem] [journal provider] # tunefs -J enable -n disable [existing filesystem].journal # mount -o async [existing filesystem].journal [mountpoint] and edit /etc/fstab accordingly. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
