Re: interpreting ceph mds stat

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On Wed, Oct 3, 2018 at 10:09 AM Jeff Smith <jeff@xxxxxxxxxxxxxxxx> 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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