The StorageInfoQuotaObserver keeps track on spaces for all attached pools. The space granularity is based on the StorageInfo. It records precious, total, pinned, free and removable spaces of currently available pools. Pools, not active are not counted. Spaces may be queried by pool, storageinfo or link. For link queries, additional, link specific information is provided for convenience.
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define context QuotaManagerSetup endDefine
set pool query interval 180
set pool query steps 20
set pool query break 200
set poolmanager query interval 350
set pool validity timeout 400
endDefine
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create diskCacheV111.services.space.StorageInfoQuotaObserver QuotaManager \
"default -export"
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These commands allow to customize the behaviour of the
StorageInfoQuotaObserver. They many determine how often
information is updated and how aggressive the cells queries
other services for updates. The meaning of the set
pool/poolmanager query interval is obvious. Because of
the fact, that the number of pools to query can be rather large,
the cell allows to send the space update queries in junks with
some time inbetween. The junk size is set by set pool
query steps and the break between sending junks by
set pool query break. If no pool information
arrived within the set pool validity timeout
the corresponding pool is declared OFFLINE and the spaces are no
longer counted.
Table 30.1. Parameter setting reference
| Command | Argument Type | Argument Unit | Meaning |
|---|---|---|---|
| set pool query interval | Time | Seconds | Time interval between pool space queries |
| set poolmanager query interval | Time | Seconds | Time interval between pool manager pool/link queries |
| set pool query break | Time | Milli-seconds | Time interval between pool query 'steps' |
| set pool query steps | Counter | None | Number of space queries between 'break' |
| set pool validity timeout | Time | Seconds | If if pool info arrived within this time, the pool is declared OFFLINE |
show pool [<poolName>]
show link [<-a>] Lists spaces per link. The <-a> option provides additional information, eg. the storage classes and pools assigned to the particular link.
show sci Lists spaces per storage element.
This cells currently replies on the following cell messages.
The different sections are all relative to
diskCacheV111.vehicles.
The StorageInfoQuotaCell provides a list of
PoolLinkInfo structures, one per known
link, on arrival of the message. Each
PoolLinkInfo is filled with the name of
the link, the list of storage classes, this link is
associtated to, and the totally available space, left in this
link. OFFLINE pools are not counted.
StorageInfoQuotaCell provides the soft and hard quota defined
for the specified StorageClass together
with the space used.