On Sat, Jan 25, 2020 at 8:42 AM Ilya Dryomov <idryomov@xxxxxxxxx> wrote:
>
> On Fri, Jan 24, 2020 at 2:10 PM Yoann Moulin <yoann.moulin@xxxxxxx> wrote:
> >
> > Le 23.01.20 à 15:51, Ilya Dryomov a écrit :
> > > On Wed, Jan 22, 2020 at 8:58 AM Yoann Moulin <yoann.moulin@xxxxxxx> wrote:
> > >>
> > >> Hello,
> > >>
> > >> On a fresh install (Nautilus 14.2.6) deploy with ceph-ansible playbook stable-4.0, I have an issue with cephfs. I can create a folder, I can
> > >> create empty files, but cannot write data on like I'm not allowed to write to the cephfs_data pool.
> > >>
> > >>> $ ceph -s
> > >>> cluster:
> > >>> id: fded5bb5-62c5-4a88-b62c-0986d7c7ac09
> > >>> health: HEALTH_OK
> > >>>
> > >>> services:
> > >>> mon: 3 daemons, quorum iccluster039,iccluster041,iccluster042 (age 23h)
> > >>> mgr: iccluster039(active, since 21h), standbys: iccluster041, iccluster042
> > >>> mds: cephfs:3 {0=iccluster043=up:active,1=iccluster041=up:active,2=iccluster042=up:active}
> > >>> osd: 24 osds: 24 up (since 22h), 24 in (since 22h)
> > >>> rgw: 1 daemon active (iccluster043.rgw0)
> > >>>
> > >>> data:
> > >>> pools: 9 pools, 568 pgs
> > >>> objects: 800 objects, 225 KiB
> > >>> usage: 24 GiB used, 87 TiB / 87 TiB avail
> > >>> pgs: 568 active+clean
> > >>
> > >> The 2 cephfs pools:
> > >>
> > >>> $ ceph osd pool ls detail | grep cephfs
> > >>> pool 1 'cephfs_data' replicated size 3 min_size 2 crush_rule 0 object_hash rjenkins pg_num 256 pgp_num 256 autoscale_mode warn last_change 83 lfor 0/0/81 flags hashpspool stripe_width 0 expected_num_objects 1 application cephfs
> > >>> pool 2 'cephfs_metadata' replicated size 3 min_size 2 crush_rule 0 object_hash rjenkins pg_num 8 pgp_num 8 autoscale_mode warn last_change 48 flags hashpspool stripe_width 0 expected_num_objects 1 pg_autoscale_bias 4 pg_num_min 16 recovery_priority 5 application cephfs
> > >>
> > >> The status of the cephfs filesystem:
> > >>
> > >>> $ ceph fs status
> > >>> cephfs - 1 clients
> > >>> ======
> > >>> +------+--------+--------------+---------------+-------+-------+
> > >>> | Rank | State | MDS | Activity | dns | inos |
> > >>> +------+--------+--------------+---------------+-------+-------+
> > >>> | 0 | active | iccluster043 | Reqs: 0 /s | 34 | 18 |
> > >>> | 1 | active | iccluster041 | Reqs: 0 /s | 12 | 16 |
> > >>> | 2 | active | iccluster042 | Reqs: 0 /s | 10 | 13 |
> > >>> +------+--------+--------------+---------------+-------+-------+
> > >>> +-----------------+----------+-------+-------+
> > >>> | Pool | type | used | avail |
> > >>> +-----------------+----------+-------+-------+
> > >>> | cephfs_metadata | metadata | 4608k | 27.6T |
> > >>> | cephfs_data | data | 0 | 27.6T |
> > >>> +-----------------+----------+-------+-------+
> > >>> +-------------+
> > >>> | Standby MDS |
> > >>> +-------------+
> > >>> +-------------+
> > >>> MDS version: ceph version 14.2.6 (f0aa067ac7a02ee46ea48aa26c6e298b5ea272e9) nautilus (stable)
> > >>
> > >>
> > >>> # mkdir folder
> > >>> # echo "foo" > bar
> > >>> -bash: echo: write error: Operation not permitted
> > >>> # ls -al
> > >>> total 4
> > >>> drwxrwxrwx 1 root root 2 Jan 22 07:30 .
> > >>> drwxr-xr-x 28 root root 4096 Jan 21 09:25 ..
> > >>> -rw-r--r-- 1 root root 0 Jan 22 07:30 bar
> > >>> drwxrwxrwx 1 root root 1 Jan 21 16:49 folder
> > >>
> > >>> # df -hT .
> > >>> Filesystem Type Size Used Avail Use% Mounted on
> > >>> 10.90.38.15,10.90.38.17,10.90.38.18:/dslab2020 ceph 28T 0 28T 0% /cephfs
> > >>
> > >> I try 2 client config :
> > >>
> > >>> $ ceph --cluster dslab2020 fs authorize cephfs client.cephfsadmin / rw
> > >>> [snip]
> > >>> $ ceph auth get client.fsadmin
> > >>> exported keyring for client.fsadmin
> > >>> [client.fsadmin]
> > >>> key = [snip]
> > >>> caps mds = "allow rw"
> > >>> caps mon = "allow r"
> > >>> caps osd = "allow rw tag cephfs data=cephfs"
> > >
> > > For "allow rw tag cephfs data=cephfs" to work, having your pools tagged
> > > with cephfs is not enough. There should be a key-value pair in the tag
> > > metadata with the name of the filesystem as well. What is the output
> > > of:
> > >
> > > ceph osd pool ls detail --format=json | jq '.[] | select(.pool_name
> > > | startswith("cephfs")) | .pool_name, .application_metadata'
> >
> > But it's a fresh install, pools have been created with the ceph-ansible playbook and it used to work before, maybe something is missing in the
> > latest release of the ceph-ansible playbook.
> >
> > dslab2020@icitsrv5:~$ ceph osd pool ls detail --format=json | jq '.[] | select(.pool_name| startswith("cephfs")) | .pool_name,
> > .application_metadata'
> > "cephfs_data"
> > {
> > "cephfs": {}
> > }
> > "cephfs_metadata"
> > {
> > "cephfs": {}
> > }
>
> Yeah, it looks like you hit one of the bugs that Paul mentions in his
> reply. Running
>
> ceph osd pool application set cephfs_data cephfs data cephfs
> ceph osd pool application set cephfs_data cephfs metadata cephfs
Sorry, this should be
ceph osd pool application set cephfs_data cephfs data cephfs
ceph osd pool application set cephfs_metadata cephfs metadata cephfs
so that the json output looks like
"cephfs_data"
{
"cephfs": {
"data": "cephfs"
}
}
"cephfs_metadata"
{
"cephfs": {
"metadata": "cephfs"
}
}
Thanks,
Ilya
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