please help - explanation for odd fsck times/behavior needed

[Eric Anderson]

Dag-Erling Smørgrav wrote:
> Eric Anderson <anderson at 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




-- 
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Eric Anderson        Sr. Systems Administrator        Centaur Technology
Anything that works is better than anything that doesn't.
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