6. k8s 与 cephfs 相关的FAQ

6.1. Input/output error

cephu@ceph-client:/mnt/mycephfs/volumes/kubernetes$ ll kubernetes-dynamic-pvc-a2c667ad-d0c7-11e7-b656-0a580af40148/
ls: reading directory 'kubernetes-dynamic-pvc-a2c667ad-d0c7-11e7-b656-0a580af40148/': Input/output error
total 0
drwxr-xr-x 1 root root 0 Nov 24 11:36 ./
drwxr-xr-x 1 root root 0 Nov 24 11:29 ../
cephu@ceph-client:/mnt/mycephfs/volumes/kubernetes$

这个问题，看了一下，https://github.com/kubernetes-incubator/external-storage/issues/345，

最后，有用户是这样回复的

I tried to update my ubuntu kernel from 4.4.0 to 4.10.0 (sudo apt install linux-image-4.10.0-28-generic) and after a reboot, the error is gone, everything works fine from now on :)

所以就是升级内核了。升级去吧。 升级一下，果然成功了。

# what? 又是这个问题。见 k8s