[ceph-users] interpreting ceph mds stat

Gregory Farnum gfarnum at redhat.com
Fri Oct 5 13:01:42 PDT 2018


On Wed, Oct 3, 2018 at 10:09 AM Jeff Smith <jeff at unbiasedgeek.com> wrote:

> I need some help deciphering the results of ceph mds stat.  I have
> been digging in the docs for hours.  If someone can point me in the
> right direction and/or help me understand.
>
> In the documentation it shows a result like this.
>
> cephfs-1/1/1 up {0=a=up:active}
>
> What do each of the 1s represent?


<MDSes up>/<MDSes which logically exist>/<maximum MDSes allowed>


>    What is the 0=a=up:active?  Is
> that saying rank 0 of file system a is up:active?
>

Rank 0 is assigned to mds.a and it is up in the active state. I forget if
the fs name is elided in a single-fs output or if it's the "cephfs-" bit at
the beginning.
-Greg
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