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Conference decwet::advfs_support

Title:AdvFS Support/Info/Questions Notefile
Notice:note 187 is Freq Asked Questions;note 7 is support policy
Moderator:DECWET::DADDAMIO
Created:Wed Jun 02 1993
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1077
Total number of notes:4417

1065.0. "V4.0B panic with "alloc_mcell: bad mcell free list"" by HGOSPS::MICKWIDLAM () Sun May 25 1997 21:40

    I have a customer running TruCluster on their AS8200/AS4100 machine
    with V4.0B. This is a new configuration and the TruCluster has been
    installed for only a week. Recently the got their system panic at every
    reboot and they were not able to use the system. The panic is
    "alloc_mcell: bad mcell free list". It seemed that the mcell free list
    of a certain Advfs was corrupted.
    
    We than asked the customer to boot to single user mode and suppress the
    startup of TruCluster. Rebooting to multiuser is now sucessful. We thus
    suspect the problem come from the shared SCSI disk on the HSZ40. Later
    the customer confirmed us that the advfs was able to be mounted but
    touching any file will panic the system.
    
    Is there anyone seen similar case? I've cross posted this on
    DIGITAL_UNIX note conference.
    
    Thanks,
    Mickwid.
T.RTitleUserPersonal
Name
DateLines
1065.1KITCHE::schottEric R. Schott USG Product ManagementMon May 26 1997 07:5913
Hi

 Run sys_check, and send in the crash data along with the error
logs as a CLD.

./sys_check -escalate

see http://www-unix.zk3.dec.com/tuning/tools/sys_check/sys_check.html


Did you look for I/O errors in the error log before the problem began?


1065.2Please submit the crash-data file to CANASTAUNIFIX::HARRISJuggling has its ups and downsMon May 26 1997 18:0310
    You should submit your crash-data file to CANASTA (See note 8919
    in conference TURRIS::UNIX_DIGITAL).  
    
    You should still escalate the problem with an IPMT/CLD, but sending the
    crash-data file will let you know if there is already a solution, or if
    there is anyone else with a similar problems.  It will also help anyone
    that follows you with a similar problem and perhaps save someone else
    some time.
    
    					Bob Harris