TSM 5.5.3
For some reason, it seems to ignore the maxsize setting. I've set the
devclass to 50G, but the volumes seem to randomly choose when they are
full. Collocation is disabled. Here is an excerpt from a q vol. Strange.
TSM-WB_LM.BFS.250165435 VV_VTL_C1 WBVV-DEVC 22.6 G
100.0 Full
TSM-WB_LM.BFS.250173350 VV_VTL_C1 WBVV-DEVC 342.2 M
100.0 Full
TSM-WB_LM.BFS.250173351 VV_VTL_C1 WBVV-DEVC 146.8 M
100.0 Full
TSM-WB_LM.BFS.250174716 VV_VTL_C1 WBVV-DEVC 9.7 G
100.0 Full
TSM-WB_LM.BFS.250176282 VV_VTL_C1 WBVV-DEVC 9.4 G
100.0 Full
tsm: TSM3500>q devc WBVV-DEVC
Device Device Storage Device Format Est/Max
Mount
Class Access Pool Type Capacity
Limit
Name Strategy Count (MB)
--------- ---------- ------- --------- ------ --------
------
WBVV-DEVC Sequential 1 SERVER 51,200.0
10
Regards,
Shawn
________________________________________________
Shawn Drew
Internet
NBStrand AT LMUS.LEGGMASON DOT COM
Sent by: ADSM-L AT VM.MARIST DOT EDU
08/13/2009 12:55 PM
Please respond to
ADSM-L AT VM.MARIST DOT EDU
To
ADSM-L
cc
Subject
Re: [ADSM-L] Virtual Volume assistance
Shawn,
In your virtual volume devclass definition you might try to set a
maxsize equal to that of the real storage behind it. This should
prevent stacking.
Neil Strand
Storage Engineer - Legg Mason
Baltimore, MD.
(410) 580-7491
Whatever you can do or believe you can, begin it.
Boldness has genius, power and magic.
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Shawn Drew
Sent: Thursday, August 13, 2009 11:52 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Virtual Volume assistance
We started using Virtual Volumes earlier this year for some new branch
locations with no local, long-term storage.
As it works, multiple virtual volumes will get stacked into one "real"
sequential volume.
The problem is that periodically, a reclamation process will require two
volumes that happen to be stacked together. On the destination side,
it
cancels one of the mounts with a "being preempted by higher priority
operation", then the whole reclamation fails and the first volume is
marked "read-only"
As I write this an idea come to the fore. Perhaps I should be using the
RECLAIMSTGpool feature. Does anyone else have this problem? Is
RECLAIMSTGpool the standard workaround?
Regards,
Shawn
________________________________________________
Shawn Drew
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