ceph df显示与ceph分区大小不匹配的可用空间

Question

I just noticed a backfillfull osd warning in our ceph cluster and there is something really strange in how ceph osd df is showing available space.

If I try to look at ceph' storage partition with df -h

# df -h | grep ceph
/dev/mapper/cl-var_lib_ceph    2.0G   57M  1.8G   4% /var/lib/ceph
/dev/mapper/cl-var_local_ceph   50G   11G   40G  21% /var/local/ceph

We can see 40G available. Now if I run ceph osd df

# ceph osd df
ID CLASS WEIGHT  REWEIGHT SIZE   USE    AVAIL %USE  VAR  PGS 
 2   hdd 0.00980  1.00000 10240M  9220M 1019M 90.04 1.00  40 
 0   hdd 0.00980  1.00000 10240M  9229M 1010M 90.13 1.00  40 
 1   hdd 0.00980  1.00000 10240M  9242M  997M 90.26 1.00  40 
                    TOTAL 30720M 27691M 3028M 90.14          
MIN/MAX VAR: 1.00/1.00  STDDEV: 0.09

Size is only 10240M, why is it so and how can I tell ceph to get size from the partition (50G) ?

Answer 1

please use a below command :

ceph df

for displaye available space.