Patch-ID# 109181-02
Keywords: cachefs filesystem panic c_rwlock
Synopsis: SunOS 5.8: /kernel/fs/cachefs patch
Date: 19/Apr/00

Solaris Release: 8

SunOS release: 5.8

Unbundled Product: 

Unbundled Release: 

Topic: SunOS 5.8: /kernel/fs/cachefs patch

	***********************************************************
	NOTE: This patch may contain one or more OEM-specific platform ports.
	      See the appropriate OEM_NOTES file within the patch for
	      information specific to these platforms.
 
	      DO NOT INSTALL this patch on an OEM system if a corresponding
	      OEM_NOTES file is not present (or is present, but instructs not
	      to install the patch), unless the OEM vendor directs otherwise.
	***********************************************************

BugId's fixed with this patch: 4103817 4166371 4292697 4299056 4299427 4308026 4308068 

Changes incorporated in this version: 4103817 4299427 4308026 4308068

Relevant Architectures: sparc

Patches accumulated and obsoleted by this patch:  

Patches which conflict with this patch: 

Patches required with this patch: 

Obsoleted by: 

Files included with this patch:

/kernel/fs/cachefs
/kernel/fs/sparcv9/cachefs
/usr/include/sys/fs/cachefs_fs.h

Problem Description:

4103817 UE450 hangs with lots of runnable threads - cachefs async thread spinning
4308026 cachefs ASSERTion panic:  fgp->fg_header->ach_nffs <= fgp->fg_header->ach_count
4308068 cachefs ASSERTion panic:  fscp->fs_idleback == cp
4299427 assertion failure in filegrp_ffrele

(from 109181-01)

4299056 sunfire panicked while running fs34.sh stress test over cachefs
4166371 Cachefs panics while unmounting
4292697 Cachefs panics while unmounting

Patch Installation Instructions:
--------------------------------

For Solaris 2.0-2.6 releases, refer to the Install.info file and/or
the README within the patch for instructions on using the generic
'installpatch' and 'backoutpatch' scripts provided with each patch.

For Solaris 7-8 releases, refer to the man pages for instructions
on using 'patchadd' and 'patchrm' scripts provided with Solaris.
Any other special or non-generic installation instructions should be
described below as special instructions.  The following example
installs a patch to a standalone machine:

       example# patchadd /var/spool/patch/104945-02

The following example removes a patch from a standalone system:

       example# patchrm 104945-02

For additional examples please see the appropriate man pages.

Special Install Instructions: 
----------------------------- 

Reboot the system after patch installation.
