Now I use the following script to create key/value backended OSD, but
the OSD is created down and never go up.
ceph osd create
umount /var/lib/ceph/osd/ceph-0
rm -rf /var/lib/ceph/osd/ceph-0
mkdir /var/lib/ceph/osd/ceph-0
ceph osd crush add osd.0 1 root=default host=CVM-0-11
mkfs -t xfs -f /dev/hioa
mount /dev/hioa /var/lib/ceph/osd/ceph-0
ceph-osd --id 0 --mkkey --mkfs --osd-data /var/lib/ceph/osd/ceph-0
/etc/init.d/ceph start osd.0
Anything goes wrong?
? 2014-09-19 16:23, Mark Kirkwood ??:
> Hi there,
>
> Well suppose you have /dev/hioa1 (assuming a device partition):
>
> $ mkfs.xfs /dev/hioa1
> $ mkdir /ceph1
> $ mount /dev/hioa1 /ceph1
>
> Then set OSD_DATAPATH=/ceph1 in the fine script :-)
>
> Yes, more work is required compared to using ceph-deploy!
>
> Cheers
>
> Mark
>
> On 19/09/14 20:11, Aegeaner wrote:
>> I'm not sure what should i put in the $OSD_DATAPATH variable? I have a
>> SSD disk /dev/hioa, and in filestore case I just use ceph-deploy to
>> prepare OSD on this disk. Should I format this disk and create a
>> filesystem on it?
>>
>> I have tried pass /dev/hioa or /dev/hioa1 as $OSD_DATAPATH, but got the
>> error:
>>
>> ceph-osd --id 0 --mkkey --mkfs --osd-data /dev/hioa
>> 2014-09-19 15:59:41.592725 7f0bc73a47a0 -1 unable to create object
>> store
>>
>> And this is the disk infomation:
>>
>> Disk /dev/hioa: 401.5 GB, 401512333312 bytes
>> 256 heads, 63 sectors/track, 48623 cylinders
>> Units = cylinders of 16128 * 512 = 8257536 bytes
>> Sector size (logical/physical): 512 bytes / 512 bytes
>> I/O size (minimum/optimal): 512 bytes / 512 bytes
>> Disk identifier: 0x00000000
>>
>> Device Boot Start End Blocks Id System
>> /dev/hioa1 1 48624 392101887+ ee GPT
>>
>> Thanks for your reply.
>> ========================
>> Aegeaner
>>
>
? 2014-09-19 16:18, Aegeaner ??:
> I'm not sure what should i put in the $OSD_DATAPATH variable? I have a
> SSD disk /dev/hioa, and in filestore case I just use ceph-deploy to
> prepare OSD on this disk. Should I format this disk and create a
> filesystem on it?
>
> I have tried pass /dev/hioa or /dev/hioa1 as $OSD_DATAPATH, but got
> the error:
>
> ceph-osd --id 0 --mkkey --mkfs --osd-data /dev/hioa
> 2014-09-19 15:59:41.592725 7f0bc73a47a0 -1 unable to create object store
>
> And this is the disk infomation:
>
> Disk /dev/hioa: 401.5 GB, 401512333312 bytes
> 256 heads, 63 sectors/track, 48623 cylinders
> Units = cylinders of 16128 * 512 = 8257536 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disk identifier: 0x00000000
>
> Device Boot Start End Blocks Id System
> /dev/hioa1 1 48624 392101887+ ee GPT
>
> Thanks for your reply.
> ========================
> Aegeaner
>
> ? 2014-09-19 14:02, Mark Kirkwood ??:
>> On 19/09/14 15:11, Aegeaner wrote:
>>>
>>> I noticed ceph added key/value store OSD backend feature in firefly,
>>> but
>>> i can hardly get any documentation about how to use it. At last I found
>>> that i can add a line in ceph.conf:
>>>
>>> osd objectstore = keyvaluestore-dev
>>>
>>> but got failed with ceph-deploy creating OSDs. According to the log,
>>> ceph-disk still tried to part a journal partition but failed.
>>>
>>> The commands i used are:
>>>
>>> ceph-deploy disk zap CVM-0-11:/dev/hioa
>>>
>>> ceph-deploy osd prepare CVM-0-11:/dev/hioa
>>>
>>> ceph-deploy osd activate CVM-0-11:/dev/hioa1
>>>
>>> Can anyone help me to create a kvstore backend OSD?
>>>
>>
>> Attached script should work (configured to use rocksdb, but just
>> change to leveldb in the obvious place. It does the whole job
>> assuming you want a MON and an OSD on the same host, so you may
>> needed to customize it - or only use the osd part after editing your
>> existing ceph.conf.
>>
>> It expects that the OSD_DATAPATH points to a mounted filesystem (i.e
>> does not make use of ceph-disk).
>>
>> Also some assumption of Ubuntu (i.e upstart) is made when it tries to
>> start the daemons.
>>
>> Best wishes
>>
>> Mark
>>
>
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