fsck bug in Solaris 8 Post: 302097765

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Operating Systems Solaris fsck bug in Solaris 8 Post 302097765 by Maillot Jaune on Tuesday 28th of November 2006 11:34:52 AM

11-28-2006

Registered User

Bug ID: 6471377
Synopsis: Fsck doesn't convert disk blocks to frags when calculating the ufs log (S8 patch 110910-04 onwards)
Category: utility
Subcategory: filesystem
State: 7-Fix in Progress
Description:
fsck doesn't convert disk blocks to file system blocks when calculating
the space used by the ufs log. This leads to fsck incorrectly updating
the cg summaries and frag bitmap in a clean file system:

# fsck -F ufs /dev/lofi/5
** /dev/rlofi/5
** Last Mounted on /mnt
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3a - Check Connectivity
** Phase 3b - Verify Shadows/ACLs
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cylinder Groups

CORRECT BAD CG SUMMARIES? y

CORRECTED SUMMARY FOR CG 0
FRAG BITMAP WRONG
FIX? y

2 files, 9 used, 8288 free (16 frags, 1034 blocks, 0.2% fragmentation)

***** FILE SYSTEM WAS MODIFIED *****

If at a later stage the log is disabled then the system will experience
a freeing free block panic as the log is freed.

This problem is introduced with patch 110910-04.
Date Modified: 2006-09-15 16:55:02 GMT+00:00

Work Around:
Suggested Fix:
Evaluation:
Fixed by patch:
Integrated in Build:
Duplicate of:
Related Change Request(s):
6312941 6312949 4836779 4872089 4890510 6175186 5086715

Date Modified: 2006-11-28 08:32:40 GMT+00:00
Public Summary:

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LEARN ABOUT OPENSOLARIS

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 5.11							    9 Oct 2002							  fsck_cachefs(1M)