Anyone else met the same problem? Using EC instead of Replica is to save
spaces, but now it's worse than replica...
On 9/9/2020 上午7:30, norman kern wrote:
Hi,
I have changed most of pools from 3-replica to ec 4+2 in my cluster, when I use
ceph df command to show
the used capactiy of the cluster:
RAW STORAGE:
CLASS SIZE AVAIL USED RAW USED %RAW USED
hdd 1.8 PiB 788 TiB 1.0 PiB 1.0 PiB 57.22
ssd 7.9 TiB 4.6 TiB 181 GiB 3.2 TiB 41.15
ssd-cache 5.2 TiB 5.2 TiB 67 GiB 73 GiB 1.36
TOTAL 1.8 PiB 798 TiB 1.0 PiB 1.0 PiB 56.99
POOLS:
POOL ID STORED OBJECTS
USED %USED MAX AVAIL
default-oss.rgw.control 1 0 B 8 0
B 0 1.3 TiB
default-oss.rgw.meta 2 22 KiB 97 3.9
MiB 0 1.3 TiB
default-oss.rgw.log 3 525 KiB 223 621
KiB 0 1.3 TiB
default-oss.rgw.buckets.index 4 33 MiB 34 33
MiB 0 1.3 TiB
default-oss.rgw.buckets.non-ec 5 1.6 MiB 48 3.8
MiB 0 1.3 TiB
.rgw.root 6 3.8 KiB 16 720
KiB 0 1.3 TiB
default-oss.rgw.buckets.data 7 274 GiB 185.39k 450
GiB 0.14 212 TiB
default-fs-metadata 8 488 GiB 153.10M 490
GiB 10.65 1.3 TiB
default-fs-data0 9 374 TiB 1.48G 939
TiB 74.71 212 TiB
...
The USED = 3 * STORED in 3-replica mode is completely right, but for EC 4+2 pool
(for default-fs-data0 )
the USED is not equal 1.5 * STORED, why...:(
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