Hi Gregory
Yes they have the same key and permissions. ceph auth list on the mds server
gives
client.admin
key: <key>
caps: [mds] allow *
caps: [mon] allow *
caps: [osd] allow *
On the client /etc/ceph/ceph.client.admin.keyring
[client.admin]
key = <key>
caps mds = "allow *"
caps mon = "allow *"
caps osd = "allow *"
I checked that the key is identical, also that the keyring is the same on both
the clients that work and on the clients where the write operations fail.
Do you have any other suggestions?
Kind regards
Sabine
_____
Dr. sc. techn. ETH
Sabine Bödefeld
Senior Consultant
ECOSPEED AG
Drahtzugstrasse 18
CH-8008 Zürich
Tel. +41 44 388 95 04
Fax: +41 44 388 95 09
Web: http://www.ecospeed.ch <http://www.ecospeed.ch/>
trusted-development-72x72
Von: Gregory Farnum [mailto:[email protected]]
Gesendet: Mittwoch, 1. August 2018 06:10
An: Bödefeld Sabine
Cc: [email protected]
Betreff: Re: [ceph-users] Write operation to cephFS mount hangs
On Tue, Jul 31, 2018 at 7:46 PM Bödefeld Sabine <[email protected]> wrote:
Hello,
we have a Ceph Cluster 10.2.10 on VMs with Ubuntu 16.04 using Xen as the
hypervisor. We use CephFS and the clients use ceph-fuse to access the files.
Some of the ceph-fuse clients hang on write operations to the cephFS. On
copying a file to the cephFS, the file is created but it's empty and the write
operation hangs forever. Ceph-fuse version is 10.2.9.
Sounds like the client has the MDS permissions required to update the CephFS
metadata hierarchy, but lacks permission to write to the RADOS pools which
actually store the file data. What permissions do the clients have? Have you
checked with "ceph auth list" or similar to make sure they all have the same
CephX capabilities?
-Greg
In the logfile of the mds there are no error messages. Also, ceph health
returns HEALTH_OK.
ceph daemon mds.eco61 session ls reports no problems (if I interpret correctly):
{
"id": 64396,
"num_leases": 2,
"num_caps": 32,
"state": "open",
"replay_requests": 0,
"completed_requests": 1,
"reconnecting": false,
"inst": "client.64396 192.168.1.179:0\/980852091",
"client_metadata": {
"ceph_sha1": "2ee413f77150c0f375ff6f10edd6c8f9c7d060d0",
"ceph_version": "ceph version 10.2.9
(2ee413f77150c0f375ff6f10edd6c8f9c7d060d0)",
"entity_id": "admin",
"hostname": "eco79",
"mount_point": "\/mnt\/cephfs",
"root": "\/"
}
},
Does anyone have an idea where the problem lies? Any help would be greatly
appreciated.
Thanks very much,
Kind regards
Sabine
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