Hi,

What is your OS? The permission of journal partition should be changed by udev 
rules: /lib/udev/rules.d/95-ceph-osd.rules
In this file, it is described as:
# JOURNAL_UUID
ACTION=="add", SUBSYSTEM=="block", \
ENV{DEVTYPE}=="partition", \
ENV{ID_PART_ENTRY_TYPE}=="45b0969e-9b03-4f30-b4c6-b4b80ceff106", \
OWNER:="ceph", GROUP:="ceph", MODE:="660", \
RUN+="/usr/sbin/ceph-disk --log-stdout -v trigger /dev/$name"

You can also use udevadm command to test whether the partition has been 
processed by the correct udev rule. Like following:

#>udevadm test /sys/block/sdb/sdb2

...
starting 'probe-bcache -o udev /dev/sdb2'
Process 'probe-bcache -o udev /dev/sdb2' succeeded.
OWNER 64045 /lib/udev/rules.d/95-ceph-osd.rules:16
GROUP 64045 /lib/udev/rules.d/95-ceph-osd.rules:16
MODE 0660 /lib/udev/rules.d/95-ceph-osd.rules:16
RUN '/usr/sbin/ceph-disk --log-stdout -v trigger /dev/$name' 
/lib/udev/rules.d/95-ceph-osd.rules:16
...

Then /dev/sdb2 will have ceph:ceph permission automatically.

#>ls -l /dev/sdb2
brw-rw---- 1 ceph ceph 8, 18 Feb 13 19:43 /dev/sdb2

Sincerely,
Craig Chi

On 2017-02-13 19:06, Piotr Dzionek<piotr.dzio...@seqr.com>wrote:
> 
> Hi,
> 
> 
> I am running ceph Jewel 10.2.5 with separate journals - ssd disks. It runs 
> pretty smooth, however I stumble upon an issue after system reboot. Journal 
> disks become owned by root and ceph failed to start.
> 
> 
> starting osd.4 at :/0 osd_data /var/lib/ceph/osd/ceph-4 
> /var/lib/ceph/osd/ceph-4/journal
> 2017-02-10 16:24:29.924126 7fd07ab40800 -1 
> filestore(/var/lib/ceph/osd/ceph-4) mount failed to open journal 
> /var/lib/ceph/osd/ceph-4/journal: (13) Permission denied
> 2017-02-10 16:24:29.924210 7fd07ab40800 -1 osd.4 0 OSD:init: unable to mount 
> object store
> 2017-02-10 16:24:29.924217 7fd07ab40800 -1 #033[0;31m ** ERROR: osd init 
> failed: (13) Permission denied#033[0m
> 
> 
> I fixed this issue by finding journal disks in /dev dir and chown to 
> ceph:ceph. I remember that I had a similar issue after I installed it for a 
> first time. Is it a bug ? or do I have to set some kind of udev rules for 
> this disks?
> 
> 
> FYI, I have this issue after every restart now.
> 
> 
> Kind regards,
> Piotr Dzionek
> 
> 
> _______________________________________________ ceph-users mailing list 
> ceph-users@lists.ceph.com 
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

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