Gregory Pearson ([log in to unmask]) wrote:
: Does  anyone  have any idea how to  remove a  member  volume  from the
: system   volume   set?  Since   I   can't   do  a   VSCLOSE   on   the
: MPEXL_SYSTEM_VOLUME_SET  I can't SCRATCHVOL the LDEV and if the master
: volume is mounted the members are  automatically  mounted  when I turn
: the drives on.
 
Basically, you can't remove a member volume from a volume set.  The basic
reason is that the file extents are spread across volumes.  So if you
remove a member volume, you would be removing portions of files.
 
Unfortunately, volume management was designed and implemented before the
volume condensing.  If you could move all the file extents off a member
volume, then you could remove the member volume.  However this has not
been coded.  As always, if this is a desirable feature, get it on the
enhancement list.
 
At the time volume management was originally designed, removing volumes was
not considered a hot item.  We always thought people would add more volumes
as their systems grew.  This was an oversight.
 
: If I did the following on our test system:
 
:   volutil> newvol mpexl_system_volume_set:member2 40
 
: the new member volume would be added  correctly, then I want to remove
: this  drive  from the  system  and all  traces  of it from the  master
        ^^^^^
: volume.
 
Please be careful in describing drives, volumes, disks, etc.  They are not
interchangable names.  In MPE the drive is the device.  The disk is the
physical media.  A volume is a contruct that MPE uses to manage disc space
and file placement.  Theoritically, more than one volume could be on a disk,
or a volume could span more than one disk.  So when you say remove the drive,
do you mean the physical device, the disk, or the volume?
 
Rick "Yes, you can blame me for hpe_system_volume_set" Ehrhart
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I only speak for myself since I'm not in CSY anymore.