Hi,
I activated balancer in order to balance data distribution:
root@ld3955:~# ceph balancer status
{
"active": true,
"plans": [],
"mode": "upmap"
}
However, the data stored on 1.6TB HDD in specific pool "hdb_backup" is
not balanced; the range starts with
osd.265 size: 1.6 usage: 52.83 reweight: 1.00000
and ends with
osd.145 size: 1.6 usage: 80.19 reweight: 1.00000
The affected drives are located on 4 nodes.
The result is that not all available disk space is available for usage.
I have attached pastebin <https://pastebin.com/dNyEwNR0> with
- ceph osd df sorted by usage
- ceph osd df tree
My cluster has multiple crush roots respresenting different disks.
In addition I have defined multiple pools, one pool for each disk type:
hdd, ssd, nvme.
I need to get the distribution better based on pools.
Please advise how to start balancer to correct data distribution.
THX
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