Hi!
This setting has always been this way and always did what it was
supposed to do: we do want data to go to (virtual) tape a.s.a.p. But now
the diskpool is filled more quickly than the migration empties it,
because there are just two migrations running and they keep on finishing
after just migrating one file at a time! This causes the overall
migration performance to be lower that the rate new data is coming into
the server, so the pool fills up.
Kind regards,
Eric van Loon
KLM Royal Dutch Airlines
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Huebschman, George J.
Sent: vrijdag 2 oktober 2009 16:03
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Migration problem
The diskpool was full, but high migration is 5%.
A low highmig threshold could easily start off migrations that run just
one file then quit, especially if there are large files...but how did
you fill the disk pool with such a low percentage for the high mig
threshold?
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Loon, EJ van - SPLXM
Sent: Friday, October 02, 2009 9:17 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Migration problem
Hi Eric!
Yes! Here are all settings for the storagepool:
Storage Pool Name: DISKPOOL_LBU3_1
Storage Pool Type: Primary
Device Class Name: DISK
Estimated Capacity: 983 G
Space Trigger Util: 12.9
Pct Util: 12.8
Pct Migr: 12.6
Pct Logical: 100.0
High Mig Pct: 5
Low Mig Pct: 0
Migration Delay: 0
Migration Continue: Yes
Migration Processes: 10
Reclamation Processes:
Next Storage Pool: DL_LBU3_STB_1
Reclaim Storage Pool:
Maximum Size Threshold: No Limit
Access: Read/Write
Description:
Overflow Location:
Cache Migrated Files?: No
Collocate?:
Reclamation Threshold:
Offsite Reclamation Limit:
Maximum Scratch Volumes Allowed:
Number of Scratch Volumes Used:
Delay Period for Volume Reuse:
Migration in Progress?: Yes
Amount Migrated (MB): 2,668,083.67
Elapsed Migration Time (seconds): 55,786 Reclamation in Progress?:
Last Update by (administrator): KLM35757 Last Update Date/Time:
10/02/2009 10:50:25 Storage Pool Data Format: Native Copy Storage
Pool(s):
Continue Copy on Error?:
CRC Data: No
Reclamation Type:
Kind regards,
Eric van Loon
KLM Royal Dutch Airlines
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Eric Vaughn
Sent: vrijdag 2 oktober 2009 15:01
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Migration problem
Do you have a high and low migration threshold set?
Eric Vaughn
Technical Administrator
Stevenson University
Office (443)334-2301
evaughn AT stevenson DOT edu
>>> "Loon, EJ van - SPLXM" <Eric-van.Loon AT KLM DOT COM> 10/2/2009 8:33 AM >>>
Hi TSM-ers!
Today I came in the office and customers complained about failing
backups. I checked the TSM server and noticed that the diskpool was
full. Migration was running, but only two processes at the same time. A
migration starts, migrates a file an then completes successfully,
another one starts, migrates one file and finishes again and so on.
The storagepool has migproc=10 and the nextpool is not collocated, but
only two are running and they keep on finishing after just migrating one
file!
I was able to lower the storagepool usage manually by issuing move data
commands against the physical diskpool volumes. This way I was able to
move all the data from them manually, but I don't understand why
migration is behaving like this.
Has anybody seen this before?
Thank you very much for your reply in advance!
Kind regards,
Eric van Loon
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number 33014286
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of the e-mail or any attachment may be disclosed, copied or
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attachment is strictly prohibited, and may be unlawful. If you have
received this e-mail by error, please notify the sender immediately
by return e-mail, and delete this message.
Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries
and/or its employees shall not be liable for the incorrect or
incomplete transmission of this e-mail or any attachments, nor
responsible for any delay in receipt.
Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal
Dutch Airlines) is registered in Amstelveen, The Netherlands, with
registered number 33014286
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