The PD_VVF record stores performance information indicating the page I/O status for the virtual volumes mapped to the Dynamic Provisioning pool.
- Information about Copy-on-Write Snapshot pools, Thin Image pools, and Dynamic Provisioning pools that do not have tier management enabled is not collected.
- RAID Agent does not collect information about a blocked Dynamic Provisioning pool except when the pool is blocked because of its usage rate reaching 100%.
- RAID Agent does not collect information about the V-VOLs that are not associated with the Dynamic Provisioning pool.
- Performance data is saved whenever tier relocation information for the storage system is updated. If you collect performance data immediately after RAID Agent starts, the data that was collected the last time might be saved again.
- Information about Dynamic Provisioning pools is not collected if tier relocation information has never been collected by the storage system.
- If RAID Agent is collecting records when the storage system is aggregating monitoring information, the collecting of records is canceled, and the KAVF18514-W message is output to the common log.
- If you stop and then restart the RAID Agent, monitoring information that covers the same time period might be stored twice.
Collection Interval
3600Key Fields
LDEV_NUMBER and PARTITION_NUMBERLifetime
From when a virtual volume is set up in a Dynamic Provisioning pool with tier management enabled to when the volume is removed.Fields
|
Field Name |
Description |
Access Type |
Format |
|---|---|---|---|
|
AVG_PAGE_IO_RATE |
Average rate of page read/write operations (per second) to and from the virtual volumes |
1, 2 |
float |
|
CAPACITY |
Capacity of the virtual volume (GB) |
1, 2 |
float |
|
COLLECTION_TIME |
Time (in GMT) when data was collected from the storage system |
1, 2 |
time_t |
|
INPUT_RECORD_TYPE |
Record type identifier, which is always set to VVF |
1, 2 |
string(8) |
|
INTERVAL |
Interval (in seconds) at which the information was collected |
1, 2 |
ulong |
|
LDEV_NUMBER |
Logical device number of the virtual volume |
1, 2 |
string(16) |
|
MONITOR_COLLECTION_END_TIME |
Time that collection of the monitoring information for the storage system ended.1, 2 |
1, 2 |
string(32) |
|
MONITOR_COLLECTION_START_TIME |
Time that collection of the monitoring information for the storage system started.1, 2 |
1, 2 |
string(32) |
|
PARTITION_NUMBER |
Partition number (from 0 to 125) |
1, 2 |
string(8) |
|
POOL_ID |
Pool ID of the pool |
1, 2 |
string(8) |
|
RECORD_TIME |
Time (in GMT) at which data was collected from the storage system and the record was created |
1, 2 |
time_t |
|
Notes:
|
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