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mcachelayer queryext
Function
The mcachelayer queryext command is used to view extent information in metadata caches and space allocation.
Parameters
Parameter |
Description |
Value |
|---|---|---|
| pool id | Disk domain ID. | The value ranges from 0 to n minus one. n indicates the maximum number of disk domain. |
| lun id | LUN ID. | The value ranges from 0 to n minus one. n indicates the maximum number of LUNs. |
| extent id | Extent ID. | - |
| volume type | Volume type. | The value can be 0 or nonzero number, where:
|
Example
View extent information in metadata caches and space allocation.
admin:/diagnose>mcachelayer queryext -p 0 -l 0 -e 0x40000001 -t 1 Extent info in mcache: Query extent info in mcache failed.Begin query in spa. ================================================= Extent info in spa: Extent ID : 0x40000001 Ckg ID : 0x4000 Ckg Offset : 1 Init Flag : 1 (0:init not finished 1: init finished) Zone Index : 0 Migrate Flag : 0 (0:not migrate 1:migrate)
