[ceph-users] mount failed since failed to load ceph kernel module

Iban Cabrillo cabrillo at ifca.unican.es
Tue Nov 14 01:52:00 PST 2017


Hi Dai Xiang,
  There is no OSD available at this moment in your cluste, then you can't
read/write or mount anything, maybe the osds are configured but they are
out, please could you paste the "#ceph osd tree " command
to see your osd status ?

Regards, I


2017-11-14 10:39 GMT+01:00 Dai Xiang <xiang.dai at sky-data.cn>:

> On Tue, Nov 14, 2017 at 09:21:56AM +0000, Linh Vu wrote:
> > Odd, you only got 2 mons and 0 osds? Your cluster build looks incomplete.
>
> But from the log, osd seems normal:
> [172.17.0.4][INFO  ] checking OSD status...
> [172.17.0.4][DEBUG ] find the location of an executable
> [172.17.0.4][INFO  ] Running command: /bin/ceph --cluster=ceph osd stat
> --format=json
> [ceph_deploy.osd][DEBUG ] Host 172.17.0.4 is now ready for osd use.
> ...
>
> [172.17.0.5][INFO  ] Running command: systemctl enable ceph.target
> [172.17.0.5][INFO  ] checking OSD status...
> [172.17.0.5][DEBUG ] find the location of an executable
> [172.17.0.5][INFO  ] Running command: /bin/ceph --cluster=ceph osd stat
> --format=json
> [ceph_deploy.osd][DEBUG ] Host 172.17.0.5 is now ready for osd use.
>
> --
> Best Regards
> Dai Xiang
> >
> > Get Outlook for Android<https://aka.ms/ghei36>
> >
> > ________________________________
> > From: Dai Xiang <xiang.dai at sky-data.cn>
> > Sent: Tuesday, November 14, 2017 6:12:27 PM
> > To: Linh Vu
> > Cc: ceph-users at lists.ceph.com
> > Subject: Re: mount failed since failed to load ceph kernel module
> >
> > On Tue, Nov 14, 2017 at 02:24:06AM +0000, Linh Vu wrote:
> > > Your kernel is way too old for CephFS Luminous. I'd use one of the
> newer kernels from http://elrepo.org. :) We're on 4.12 here on RHEL 7.4.
> >
> > I had updated kernel version to newest:
> > [root at d32f3a7b6eb8 ~]$ uname -a
> > Linux d32f3a7b6eb8 4.14.0-1.el7.elrepo.x86_64 #1 SMP Sun Nov 12 20:21:04
> EST 2017 x86_64 x86_64 x86_64 GNU/Linux
> > [root at d32f3a7b6eb8 ~]$ cat /etc/redhat-release
> > CentOS Linux release 7.2.1511 (Core)
> >
> > But still failed:
> > [root at d32f3a7b6eb8 ~]$ /bin/mount 172.17.0.4,172.17.0.5:/ /cephfs -t
> ceph -o name=admin,secretfile=/etc/ceph/admin.secret -v
> > failed to load ceph kernel module (1)
> > parsing options: rw,name=admin,secretfile=/etc/ceph/admin.secret
> > mount error 2 = No such file or directory
> > [root at d32f3a7b6eb8 ~]$ ll /cephfs
> > total 0
> >
> > [root at d32f3a7b6eb8 ~]$ ceph -s
> >   cluster:
> >     id:     a5f1d744-35eb-4e1b-a7c7-cb9871ec559d
> >     health: HEALTH_WARN
> >             Reduced data availability: 128 pgs inactive
> >             Degraded data redundancy: 128 pgs unclean
> >
> >   services:
> >     mon: 2 daemons, quorum d32f3a7b6eb8,1d22f2d81028
> >     mgr: d32f3a7b6eb8(active), standbys: 1d22f2d81028
> >     mds: cephfs-1/1/1 up  {0=1d22f2d81028=up:creating}, 1 up:standby
> >     osd: 0 osds: 0 up, 0 in
> >
> >   data:
> >     pools:   2 pools, 128 pgs
> >     objects: 0 objects, 0 bytes
> >     usage:   0 kB used, 0 kB / 0 kB avail
> >     pgs:     100.000% pgs unknown
> >              128 unknown
> >
> > [root at d32f3a7b6eb8 ~]$ lsmod | grep ceph
> > ceph                  372736  0
> > libceph               315392  1 ceph
> > fscache                65536  3 ceph,nfsv4,nfs
> > libcrc32c              16384  5 libceph,nf_conntrack,xfs,dm_
> persistent_data,nf_nat
> >
> >
> > --
> > Best Regards
> > Dai Xiang
> > >
> > >
> > > Hi!
> > >
> > > I got a confused issue in docker as below:
> > >
> > > After install ceph successfully, i want to mount cephfs but failed:
> > >
> > > [root at dbffa72704e4 ~]$ /bin/mount http://172.17.0.4:/<http://
> 172.17.0.4:/> /cephfs -t ceph -o name=admin,secretfile=/etc/ceph/admin.secret
> -v
> > > failed to load ceph kernel module (1)
> > > parsing options: rw,name=admin,secretfile=/etc/ceph/admin.secret
> > > mount error 5 = Input/output error
> > >
> > > But ceph related kernel modules have existed:
> > >
> > > [root at dbffa72704e4 ~]$ lsmod | grep ceph
> > > ceph                  327687  0
> > > libceph               287066  1 ceph
> > > dns_resolver           13140  2 nfsv4,libceph
> > > libcrc32c              12644  3 xfs,libceph,dm_persistent_data
> > >
> > > Check the ceph state(i only set data disk for osd):
> > >
> > > [root at dbffa72704e4 ~]$ ceph -s
> > >   cluster:
> > >     id:     20f51975-303e-446f-903f-04e1feaff7d0
> > >     health: HEALTH_WARN
> > >             Reduced data availability: 128 pgs inactive
> > >             Degraded data redundancy: 128 pgs unclean
> > >
> > >   services:
> > >     mon: 2 daemons, quorum dbffa72704e4,5807d12f920e
> > >     mgr: dbffa72704e4(active), standbys: 5807d12f920e
> > >     mds: cephfs-1/1/1 up  {0=5807d12f920e=up:creating}, 1 up:standby
> > >     osd: 0 osds: 0 up, 0 in
> > >
> > >   data:
> > >     pools:   2 pools, 128 pgs
> > >     objects: 0 objects, 0 bytes
> > >     usage:   0 kB used, 0 kB / 0 kB avail
> > >     pgs:     100.000% pgs unknown
> > >              128 unknown
> > >
> > > [root at dbffa72704e4 ~]$ ceph version
> > > ceph version 12.2.1 (3e7492b9ada8bdc9a5cd0feafd42fbca27f9c38e)
> luminous (stable)
> > >
> > > My container is based on centos:centos7.2.1511, kernel is 3e0728877e22
> 3.10.0-514.el7.x86_64.
> > >
> > > I saw some ceph related images on docker hub so that i think above
> > > operation is ok, did i miss something important?
> > >
> > > --
> > > Best Regards
> > > Dai Xiang
> >
>
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>



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Iban Cabrillo Bartolome
Instituto de Fisica de Cantabria (IFCA)
Santander, Spain
Tel: +34942200969
PGP PUBLIC KEY:
http://pgp.mit.edu/pks/lookup?op=get&search=0xD9DF0B3D6C8C08AC
############################################################################
Bertrand Russell:*"El problema con el mundo es que los estúpidos están
seguros de todo y los inteligentes están **llenos de dudas*"
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