Re: Journal symlink broken / Ceph 0.94.5 / CentOS 6.7

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Hi Loic,

osd's are on /dev/sda and /dev/sdb, journal's is on /dev/sdc (sdc3 / sdc4).

sgdisk for sda shows;

Partition GUID code: 4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D (Unknown)
Partition unique GUID: E85F4D92-C8F1-4591-BD2A-AA43B80F58F6
First sector: 2048 (at 1024.0 KiB)
Last sector: 1953525134 (at 931.5 GiB)
Partition size: 1953523087 sectors (931.5 GiB)
Attribute flags: 0000000000000000
Partition name: 'ceph data'

for sdb

Partition GUID code: 4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D (Unknown)
Partition unique GUID: C83B5AA5-FE77-42F6-9415-25CA0266FB7F
First sector: 2048 (at 1024.0 KiB)
Last sector: 1953525134 (at 931.5 GiB)
Partition size: 1953523087 sectors (931.5 GiB)
Attribute flags: 0000000000000000
Partition name: 'ceph data'

for /dev/sdc3

Partition GUID code: 45B0969E-9B03-4F30-B4C6-B4B80CEFF106 (Unknown)
Partition unique GUID: C34D4694-B486-450D-B57F-DA24255F0072
First sector: 935813120 (at 446.2 GiB)
Last sector: 956293119 (at 456.0 GiB)
Partition size: 20480000 sectors (9.8 GiB)
Attribute flags: 0000000000000000
Partition name: 'ceph journal'

for /dev/sdc4

Partition GUID code: 45B0969E-9B03-4F30-B4C6-B4B80CEFF106 (Unknown)
Partition unique GUID: 1E9D527F-0866-4284-B77C-C1CB04C5A168
First sector: 956293120 (at 456.0 GiB)
Last sector: 976773119 (at 465.8 GiB)
Partition size: 20480000 sectors (9.8 GiB)
Attribute flags: 0000000000000000
Partition name: 'ceph journal'

60-ceph-partuuid-workaround.rules is located in /lib/udev/rules.d, so it seems correct to me.

after a reboot, /dev/disk/by-partuuid is;

-rw-r--r-- 1 root root  0 Dec 16 07:35 1e9d527f-0866-4284-b77c-c1cb04c5a168
-rw-r--r-- 1 root root  0 Dec 16 07:35 c34d4694-b486-450d-b57f-da24255f0072
lrwxrwxrwx 1 root root 10 Dec 16 07:35 c83b5aa5-fe77-42f6-9415-25ca0266fb7f -> ../../sdb1
lrwxrwxrwx 1 root root 10 Dec 16 07:35 e85f4d92-c8f1-4591-bd2a-aa43b80f58f6 -> ../../sda1

i dont know how to verify the symlink of the journal file - can you guide me on that one?

Thank :-) !

/Jesper

**************

Hi,

On 17/12/2015 07:53, Jesper Thorhauge wrote:
> Hi,
>
> Some more information showing in the boot.log;
>
> 2015-12-16 07:35:33.289830 7f1b990ad800 -1 filestore(/var/lib/ceph/tmp/mnt.aWZTcE) mkjournal error creating journal on /var/lib/ceph/tmp/mnt.aWZTcE/journal: (22) Invalid argument
> 2015-12-16 07:35:33.289842 7f1b990ad800 -1 OSD::mkfs: ObjectStore::mkfs failed with error -22
> 2015-12-16 07:35:33.289883 7f1b990ad800 -1  ** ERROR: error creating empty object store in /var/lib/ceph/tmp/mnt.aWZTcE: (22) Invalid argument
> ERROR:ceph-disk:Failed to activate
> ceph-disk: Command '['/usr/bin/ceph-osd', '--cluster', 'ceph', '--mkfs', '--mkkey', '-i', '7', '--monmap', '/var/lib/ceph/tmp/mnt.aWZTcE/activate.monmap', '--osd-data', '/var/lib/ceph/tmp/mnt.aWZTcE', '--osd-journal', '/var/lib/ceph/tmp/mnt.aWZTcE/journal', '--osd-uuid', 'c83b5aa5-fe77-42f6-9415-25ca0266fb7f', '--keyring', '/var/lib/ceph/tmp/mnt.aWZTcE/keyring']' returned non-zero exit status 1
> ceph-disk: Error: One or more partitions failed to activate
>
> Maybe related to the "(22) Invalid argument" part..?

After a reboot the symlinks are reconstructed and if they are still incorrect, it means there is an inconsistency somewhere else. To debug the problem, could you mount /dev/sda1 and verify the symlink of the journal file ? Then verify the content of /dev/disk/by-partuuid. And also display the partition information with sgdisk -i 1 /dev/sda and sgdisk -i 2 /dev/sda. Are you collocating your journal with the data, on the same disk ? Or are they on two different disks ?

git log --no-merges --oneline tags/v0.94.3..tags/v0.94.5 udev

shows nothing, meaning there has been no change to udev rules. There is one change related to the installation of the udev rules https://github.com/ceph/ceph/commit/4eb58ad2027148561d94bb43346b464b55d041a6. Could you double check 60-ceph-partuuid-workaround.rules is installed where it should ?

Cheers

>
> /Jesper
>
> *********************
>
> Hi,
>
> I have done several reboots, and it did not lead to healthy symlinks :-(
>
> /Jesper
>
> ************
>
> Hi,
>
> On 16/12/2015 07:39, Jesper Thorhauge wrote:
>> Hi,
>>
>> A fresh server install on one of my nodes (and yum update) left me with CentOS 6.7 / Ceph 0.94.5. All the other nodes are running Ceph 0.94.2.
>>
>> "ceph-disk prepare /dev/sda /dev/sdc" seems to work as expected, but "ceph-disk activate / dev/sda1" fails. I have traced the problem to "/dev/disk/by-partuuid", where the journal symlinks are broken;
>>
>> -rw-r--r-- 1 root root  0 Dec 16 07:35 1e9d527f-0866-4284-b77c-c1cb04c5a168
>> -rw-r--r-- 1 root root  0 Dec 16 07:35 c34d4694-b486-450d-b57f-da24255f0072
>> lrwxrwxrwx 1 root root 10 Dec 16 07:35 c83b5aa5-fe77-42f6-9415-25ca0266fb7f -> ../../sdb1
>> lrwxrwxrwx 1 root root 10 Dec 16 07:35 e85f4d92-c8f1-4591-bd2a-aa43b80f58f6 -> ../../sda1
>>
>> Re-creating them manually wont survive a reboot. Is this a problem with the udev rules in Ceph 0.94.3+?
>
> This usually is a symptom of something else going wrong (i.e. it is possible to confuse the kernel into creating the wrong symbolic links). The correct symlinks should be set when you reboot.
>
>> Hope that somebody can help me :-)
>
> Please let us know if rebooting leads to healthy symlinks.
>
> Cheers
>>
>> Thanks!
>>
>> Best regards,
>> Jesper
>>
>>
>> _______________________________________________
>> ceph-users mailing list
>> ceph-users@xxxxxxxxxxxxxx
>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>>
>
> --
> Loïc Dachary, Artisan Logiciel Libre
>
>
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>
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--
Loïc Dachary, Artisan Logiciel Libre

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