Date: Tue, 14 Mar 2006 10:50:16 -0600 From: Eric Anderson <anderson@centtech.com> To: =?ISO-8859-1?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no> Cc: freebsd-fs@freebsd.org, Ensel Sharon <user@dhp.com> Subject: Re: please help - explanation for odd fsck times/behavior needed Message-ID: <4416F448.6060602@centtech.com> In-Reply-To: <86wtexdlcg.fsf@xps.des.no> References: <Pine.LNX.4.21.0603141059060.8684-100000@shell.dhp.com> <4416EF6A.3020201@centtech.com> <86wtexdlcg.fsf@xps.des.no>
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Dag-Erling Smørgrav wrote: > Eric Anderson <anderson@centtech.com> writes: > >> So, when my system goes down unclean, and I boot back up, all the >> filesystems will be fsck'ed, starting with root, then var, then my >> other mount points, in order of the pass number in the fstab (above, >> mine is set to 2). You should have root 1, then var 2, and other >> partitions 3,4, etc probably. >> > > There is no advantage to using pass numbers higher than 2. Just use 1 > for the root filesystem, 0 for nfs and filesystems marked noauto, and > 2 for everything else. > Ok, thanks for the insight. Someone with a commit wand should wave it over fsck(8): If not in preen mode, the remaining entries are checked in order of increasing pass number one at a time. This is needed when interaction with fsck is required. In preen mode, after pass 1 completes, all remaining file systems are checked, in pass number order running one process per disk drive in par- allel for each pass number in increasing order. In other words: In preen mode all pass 1 partitions are checked sequen- tially. Next all pass 2 partitions are checked in parallel, one process per disk drive. Next all pass 3 partitions are checked in parallel, one process per disk drive. etc. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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