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2102
November 13th, 2015 02:00
Can not create volume by use "Unused" capacity.
Here is the Storage Pool message:
[root@node3 ~]# scli --query_storage_pool --protection_domain_name Fab1 --storage_pool_name HDD
Storage Pool HDD (Id: eed4df9d00000000) has 8 volumes and 0 Bytes available for volume allocation
The number of parallel rebuild/rebalance jobs: 2
Rebuild is enabled and using No-Limit policy
Rebalance is enabled and using No-Limit policy
Background device scanner: Mode: device_only, Bandwidth Limit 1024 KBps per device
Zero padding is disabled
Spare policy: 15% out of total
Uses RAM Read Cache
RAM Read Cache write handling mode is 'passthrough'
56.2 TB (57555 GB) total capacity
90.4 GB (92580 MB) unused capacity
0 Bytes snapshots capacity
47.7 TB (48832 GB) in-use capacity
0 Bytes thin capacity
47.7 TB (48832 GB) protected capacity
0 Bytes failed capacity
0 Bytes degraded-failed capacity
0 Bytes degraded-healthy capacity
0 Bytes unreachable-unused capacity
0 Bytes active rebalance capacity
0 Bytes pending rebalance capacity
0 Bytes active fwd-rebuild capacity
0 Bytes pending fwd-rebuild capacity
0 Bytes active bck-rebuild capacity
0 Bytes pending bck-rebuild capacity
0 Bytes rebalance capacity
0 Bytes fwd-rebuild capacity
0 Bytes bck-rebuild capacity
0 Bytes active moving capacity
0 Bytes pending moving capacity
0 Bytes total moving capacity
8.4 TB (8633 GB) spare capacity
47.7 TB (48832 GB) at-rest capacity
0 Bytes decreased capacity
Primary-reads 0 IOPS 0 Bytes per-second
Primary-writes 0 IOPS 0 Bytes per-second
Secondary-reads 0 IOPS 0 Bytes per-second
Secondary-writes 0 IOPS 0 Bytes per-second
Backward-rebuild-reads 0 IOPS 0 Bytes per-second
Backward-rebuild-writes 0 IOPS 0 Bytes per-second
Forward-rebuild-reads 0 IOPS 0 Bytes per-second
Forward-rebuild-writes 0 IOPS 0 Bytes per-second
Rebalance-reads 0 IOPS 0 Bytes per-second
Rebalance-writes 0 IOPS 0 Bytes per-second
Volumes summary:
8 thick-provisioned volumes. Total size: 23.8 TB (24416 GB)
7 volumes are unmapped
But i can not create the volume :
[root@node3 ~]# scli --add_volume --protection_domain_name Fab1 --storage_pool_name HDD --size_gb 8 --volume_name HDD9
Error: MDM failed command. Status: Insufficient resources
Thanks a lot!
daverush
51 Posts
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November 13th, 2015 15:00
Littleboy,
This can happen when there isn't enough evenly-distributed free space in the pool.
Being that you're (likely) at critical capacity usage, rebalance can't take place.
You'll be unable to even them out unless you can get the used capacity below the critical threshold again, whether by reducing used capacity, increasing unused capacity (add disks), or raising the critical threshold beyond the used capacity.
As you're very very close to the limit, I don't know that you'll be able to raise the threshold any further. I'd add an SDS or disks if you can't remove/shrink a volume.
littleboy1
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November 15th, 2015 20:00
THX, Rush.
Get it.I wanna know what difference between critical capacity and high capacity? Like at critical capacity usage, rebalance can't not take place.Does it been record to user guide?
daverush
51 Posts
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November 17th, 2015 21:00
That's the only difference I know of.
Not sure if that is laid out in the latest user guide.
littleboy1
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November 19th, 2015 17:00
Okay, Thanks so much.