[ceph-users] Re: mds slow request with “failed to authpin, subtree is being exported"

[Xiubo Li]

On 11/22/23 16:02, zxcs wrote:

HI, Experts,

we are using cephfs with  16.2.* with multi active mds, and recently, we have 
two nodes mount with ceph-fuse due to the old os system.

and  one nodes run a python script with `glob.glob(path)`, and another client 
doing `cp` operation on the same path.

then we see some log about `mds slow request`, and logs complain “failed to authpin, 
subtree is being exported"

then need to restart mds,


our question is, does there any dead lock?  how can we avoid this and how to 
fix it without restart mds(it will influence other users) ?

BTW, won't the slow requests disappear themself later ?

It looks like the exporting is slow or there too many exports are going on.

Thanks

- Xiubo

Thanks a ton!


xz
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