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Conference smurf::ase

Title:ase
Moderator:SMURF::GROSSO
Created:Thu Jul 29 1993
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2114
Total number of notes:7347

1568.0. "DECsafe - DECnsr - Cloned ADVFS filesystem" by BACHUS::DEVOS (Manu Devos DEC/SI Brussels 856-7539) Wed Aug 28 1996 19:13

T.RTitleUserPersonal
Name
DateLines
1568.1KITCHE::schottEric R. Schott USG Product ManagementWed Aug 28 1996 23:549
1568.2tried nsr patches ??NETRIX::"david.nield@lzo.mts.dec.com"david nieldThu Aug 29 1996 10:4140
1568.3DECsafe/DECnsr functionnality lack...BACHUS::DEVOSManu Devos DEC/SI Brussels 856-7539Fri Aug 30 1996 05:5319
1568.4Senior Unix ConsultantNETRIX::"buttafuoco@mail.dec.com"Jim ButtafuocoThu Oct 10 1996 15:2212
1568.5BACHUS::DEVOSManu Devos DEC/SI Brussels 856-7539Mon Oct 14 1996 11:387
1568.6Another solution?CHEFS::TIMMIS_JTue Feb 04 1997 12:5637
    I am running a similar scenario and have the same problem.
    
    Digital UNIX 3.2G	NSR 3.2a	ASE 1.3
    
    The solution in .4 sounds good, BUT after reading all of note 1234 is
    it a supported solution?
    
    
    An alternative solution I am testing is to backup cluster hosts as
    follows:
    
    On each server, in a cron script create and mount advfs clones of all the 
    file systems associated with the service running on the server.
    
    I then use NSR to backup the Cluster Host specifying all the clones as
    save sets plus clones of any file systems that can failover
    
    The cloned file sets would be unmounted and removed after the backup. 
    In the case of a failover occuring while the cloned filesets were
    mounted, the ASE stop scripts would unmount the cloned filesets
    (after ensuring the filesystems are not being used via lsof).
    Any resulting backup failure would be re-run.
    
    The main problem I see with this is that not all filesets within an
    advFS domain are defined in the Disk Service i.e. the cloned filesets
    are not in the Disk service.  ASE documentation states that all
    filesets within an advFS domain should be included within a disk
    service, which I am assuming is to ensure successful failover -- is
    this correct?  
    
    Is this feasable and/or supported?
    
    What are you recommendations between this and .4?
    
    Thanks in advance for any help
    
    Jane Timmis
1568.7XIRTLU::schottEric R. Schott USG Product ManagementTue Feb 04 1997 15:556
Hi

  You would have to check with the nsr folks...my understanding is
that they were patching to be able to determine that a clone is
part of an ase service correctly....

1568.8An ASE problem?CHEFS::TIMMIS_JTue Feb 04 1997 21:2015
    Thanks for your prompt reply.
    
    I don't believe it is an nsr problem but an ASE problem, in that file
    systems cannot be added to a Disk Service automatically while the
    service is running.
    
    For an immediate solution, can anyone state whether under ASE the 
    following are supported:
    i.	umount a filesystem that is not being used but is 
        part of an ASE Disk service
    ii.	create a cloned file system outside ASE on an advFS domain that is
    	part of an ASE Disk service, ensuring that the cloned file system 
    	is unmounted as part of ASE stop scripts.
    
    Thanks again for any help
1568.9KITCHE::schottEric R. Schott USG Product ManagementThu Feb 06 1997 10:4430
>
>    I don't believe it is an nsr problem but an ASE problem, in that file
>    systems cannot be added to a Disk Service automatically while the
>    service is running.

File systems can not be added to the service definition of
a running service without doing the modify (which stops and
restarts the service).

Clones should be able to be added/removed, with the assumption that
mount, dismounting, creating and deleting of clones must be done
by other scripts (ie ASE does not do this for you).

User defined scripts may be one method of handling the above.


Adding and removing of disks to a service currently (V1.4a and earlier
releases) requires the service modification (and start/stop).  We plan
to allow this to be online in V1.5 release (in future).

>    
>    For an immediate solution, can anyone state whether under ASE the 
>    following are supported:
>    i.	umount a filesystem that is not being used but is 
>        part of an ASE Disk service
>    ii.	create a cloned file system outside ASE on an advFS domain that is
>    	part of an ASE Disk service, ensuring that the cloned file system 
>    	is unmounted as part of ASE stop scripts.
>    
>    Thanks again for any help
1568.10See NETWORKER notefile...BACHUS::DEVOSManu Devos DEC/SI Brussels 856-7539Fri Feb 07 1997 11:4711
    Hi,
    
    Just to close this thread, the ASE service ADVFS clone filesystems are
    NOW (DECNSR 4.2A + Patch 1,2,3,4 or DECNSR V4.2B + patch 1) correctly
    recognised as ASE service filesystems. The still pending problem is the
    command "savefs" which must have the "-F" parameter and the
    undocumented/reserved for engineering parameter "-c client" argument to
    accept and save the cloned filesystem.
    
    Regards, Manu.