ceph問題總結

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之前測試用ceph總是警告

     health HEALTH_WARN            pool cephfs_metadata2 has many more objects per pg than average (too few pgs?)            pool cephfs_data2 has many more objects per pg than average (too few pgs?)

查看pg數

[[email protected] ~]# ceph osd pool get cephfs_metadata2 pg_numpg_num: 8[[email protected] ~]# ceph osd pool get cephfs_metadata2 pgp_numpgp_num: 8

突然想起來當時只是測試安裝，而且說pg數可以增加但不能減少，所以只是隨便設定一個數。再設定回來即可。

[[email protected] ~]# ceph osd pool set cephfs_metadata2 pg_num 256Error E2BIG: specified pg_num 256 is too large (creating 248 new PGs on ~3 OSDs exceeds per-OSD max of 32)

結果出現這個錯誤，參考“http://www.selinuxplus.com/?p=782”，原來是一次增加的數量有限制。最後選擇用暴力的方法解決問題：

[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pg_num 40[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pg_num 72[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pg_num 104[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pg_num 136[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pg_num 168[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pg_num 200[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pg_num 232[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pg_num 256[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pgp_num 40[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pgp_num 72[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pgp_num 104[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pgp_num 136[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pgp_num 168[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pgp_num 200[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pgp_num 232[[email protected] my-cluster]# ceph osd pool set cephfs_metadata2 pgp_num 256

過了大概半個小時，叢集就正常了。

 

ceph問題總結