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Full Discussion: Understanding fsck pass in /etc/vfstab
Operating Systems Solaris Understanding fsck pass in /etc/vfstab Post 302968528 by MadeInGermany on Thursday 10th of March 2016 09:50:01 AM
Old 03-10-2016
Q1) Yes, the main purpose of "logging" is a fast fsck.
Q2) Yes, much longer. The more files are on the file system, the longer it takes. Yes, run level 3 is reached when all fsck are done.
Q3) No, not accessable. fsck is to be run before the file system is mounted.
When the system is booted, / is mounted read-only, then fsck is run on it, then it is remounted read-write. (When fsck fails it goes to an emergency maintenance shell; / is still read-only then.)

If your goal is a faster system boot, simply remove the nologging option (field 7) in /etc/vfstab for the respective ufs file system (field 4)
If you have Solaris 8 you must put logging option (i.e. replace the - placeholder with logging).
Next boot (or next mount) will automatically convert the filesystem to logging (that can a few seconds, and it will reduce the free space by a few percent).
 

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LEARN ABOUT POSIX

fsck_cachefs

fsck_cachefs(1M)					  System Administration Commands					  fsck_cachefs(1M)

NAME

       fsck_cachefs - check integrity of data cached with CacheFS

SYNOPSIS

       fsck -F cachefs [-m] [-o noclean] cache_directory

DESCRIPTION

       The  CacheFS  version  of the fsck command checks the integrity of a cache directory.This utility corrects any CacheFS problems it finds by
       default. There is no interactive mode. The most likely invocation of fsck for CacheFS file systems is at boot time from	an  entry  in  the
       /etc/vfstab file. See  vfstab(4).

OPTIONS

       The following options are supported:

       -m	       Check, but do not repair.

       -o noclean      Force a check on the cache even if there is no reason to suspect there is a problem.

EXAMPLES

       Example 1: Using fsck_cachefs to Force a Check on the Cache Directory

       The following example forces a check on the cache directory /cache3:

       example% fsck -F cachefs -o noclean /cache3

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cfsadmin(1M), fsck(1M), mount_cachefs(1M), vfstab(4), attributes(5)

SunOS 5.10							    9 Oct 2002							  fsck_cachefs(1M)
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