Hi,
I'm using admin key with following "ceph auth list" output. I don;t see any
problem there. I'm not sure sure it is related to path restriction since dd
with small file was OK.
client.admin
key: AQBBk81Wk76dBxAA0SGKyJGgfSUt202NKX8tNQ==
caps: [mds] allow *
caps: [mon] allow *
caps: [osd] allow *
Best regards,
On Thu, Aug 25, 2016 at 8:15 PM, Yan, Zheng <[email protected]> wrote:
> On Thu, Aug 25, 2016 at 11:12 AM, Lazuardi Nasution
> <[email protected]> wrote:
> > Hi,
> >
> > My setup is default. How can I know if there is path restriction? If it
> is
> > path restriction, why operation with small size if file is OK?
> >
>
> run "ceph auth list". check if there is "path=/XXX" in MDS' auth string
>
> > Best regards,
> >
> >
> > On Aug 25, 2016 08:12, "Yan, Zheng" <[email protected]> wrote:
> >>
> >> have you enabled path restriction on cephfs?
> >>
> >> On Thu, Aug 25, 2016 at 1:25 AM, Lazuardi Nasution
> >> <[email protected]> wrote:
> >> > Hi,
> >> >
> >> > I have problem with CephFS on writing big size file. I have found that
> >> > my
> >> > OpenStack Nova backup was not working after I change the rbd based
> mount
> >> > of
> >> > /var/lib/nova/instances/snapshots to CephFS based (mounted on
> /etc/fstab
> >> > on
> >> > all Nova compute nodes). I couldn't relize the cause until I tried to
> do
> >> > some test below.
> >> >
> >> > [root@compute-aa instances]# sudo -S -u nova dd if=/dev/zero
> >> > of=./snapshots/test/test.dat bs=4096 count=1024
> >> > 1024+0 records in
> >> > 1024+0 records out
> >> > 4194304 bytes (4.2 MB) copied, 0.002956 s, 1.4 GB/s
> >> >
> >> > It seem that making 4.2MB size file is OK. The "test" folder was been
> >> > created by nova user too.
> >> >
> >> > [root@compute-aa instances]# sudo -S -u nova dd if=/dev/zero
> >> > of=./snapshots/test/test.dat bs=4096 count=1048576
> >> >
> >> > This test was hang and gave me "D state" of dd process which cannot be
> >> > killed, so I must reboot that node. This make afraid to do some more
> >> > test
> >> > with lower size. When I tried to see the folder content, I found
> >> > following
> >> > result.
> >> >
> >> > [root@compute-aa ~]# ls -lah /var/lib/nova/instances/snapshots/test/
> >> > total 0
> >> > drwxr-xr-x 1 nova nova 0 Aug 24 22:35 .
> >> > drwxr-xr-x 1 nova nova 0 Aug 24 22:33 ..
> >> > -rw-r--r-- 1 nova nova 0 Aug 24 22:35 test.dat
> >> >
> >> > I prefer to use CephFS since the snapshot folder is only for
> temporary.
> >> > Please help me to solve this problem.
> >> >
> >> > Best regards,
> >> >
> >> >
> >> > _______________________________________________
> >> > ceph-users mailing list
> >> > [email protected]
> >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> >> >
>
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