Sir,
I have upgraded my cluster to Ceph v0.48. and cluster is fine (except
gceph not working) .
How can I direct my data inject to specific osds ?
i tried to edit crushmap & tired to specify ruleset accordingly , But
its not working ( I did same for Ceph v0.36 it worked )
-----------------------------------------------------------------------//crushmap-----------------------------------
# begin crush map
# devices
device 0 osd.0
device 1 osd.1
# types
type 0 osd
type 1 host
type 2 rack
type 3 row
type 4 room
type 5 datacenter
type 6 pool
type 7 ghost
# buckets
host atish-virtual-machine {
id -2 # do not change unnecessarily
# weight 1.000
alg straw
hash 0 # rjenkins1
item osd.0 weight 1.000
}
ghost bob-virtual-machine {
id -4 # do not change unnecessarily
# weight 1.000
alg straw
hash 0 # rjenkins1
item osd.1 weight 1.000
}
rack unknownrack {
id -3 # do not change unnecessarily
# weight 2.000
alg straw
hash 0 # rjenkins1
item atish-virtual-machine weight 1.000
item bob-virtual-machine weight 1.000
}
pool default {
id -1 # do not change unnecessarily
# weight 2.000
alg straw
hash 0 # rjenkins1
item unknownrack weight 2.000
}
# rules
rule data {
ruleset 0
type replicated
min_size 1
max_size 10
step take default
step chooseleaf firstn 0 type host
step emit
}
rule metadata {
ruleset 1
type replicated
min_size 1
max_size 10
step take default
step chooseleaf firstn 0 type host
step emit
}
rule rbd {
ruleset 2
type replicated
min_size 1
max_size 10
step take default
step chooseleaf firstn 0 type host
step emit
}
rule newbyh {
ruleset 3
type replicated
min_size 1
max_size 10
step take default
step chooseleaf firstn 0 type ghost
step emit
}
# end crush map
---------------------------------------------//EOF-------------------------------------------------------------------------
I've created new pool "new" set its replication factor to 1 & also set
crush_ruleset property to 3 .I was expecting ceph to select osd.1 i.e.
bob-virtual-machine but some(Obj1,Obj2) Objects are placed into osd.0
(atish-V-M) and some(Obj3) was placed in osd.1. Does my crushmap have
errors ? Or I am missing the direction ?
-
Hemant Surale
On Thu, Sep 27, 2012 at 10:56 AM, hemant surale <hemant.surale@xxxxxxxxx> wrote:
> Sure Sir ! :)
>
>
> On Thu, Sep 27, 2012 at 10:50 AM, Dan Mick <dan.mick@xxxxxxxxxxx> wrote:
>> OK. Let us know if osd map ends up working out for you.
>>
>>
>> On 09/26/2012 10:18 PM, hemant surale wrote:
>>>
>>> Sir,
>>> I am now upgrading to latest version of ceph. I was using 0.36
>>> because it was running fine on 3 node cluster & i was really afraid of
>>> problem could pop up , But learning is something that consists of
>>> problem solving . So np.
>>>
>>> -
>>> Hemant Surale.
>>>
>>> On Thu, Sep 27, 2012 at 10:38 AM, Dan Mick <dan.mick@xxxxxxxxxxx> wrote:
>>>>
>>>> 0.36?? That is *very* old. Is there a good reason not to upgrade?
>>>>
>>>>
>>>> On 09/26/2012 07:31 PM, hemant surale wrote:
>>>>>
>>>>>
>>>>> Sir,
>>>>> I am using Ceph v0.36 . May be thats the reason after executing cmd
>>>>> told by you execution goes like this
>>>>>
>>>>>
>>>>> ---------------------------------------------
>>>>> root@third-virtual-machine:~# ceph osd map newbyh Obj1
>>>>> 2012-09-26 12:17:49.900514 mon <- [osd,map,newbyh,Obj1]
>>>>> 2012-09-26 12:17:49.900977 mon0 -> 'unknown command map' (-22)
>>>>> ----------------------------------------------
>>>>>
>>>>>
>>>>>
>>>>> -
>>>>> Hemant Surale.
>>>>>
>>>>>
>>>>> On Thu, Sep 27, 2012 at 3:23 AM, Dan Mick <dan.mick@xxxxxxxxxxx> wrote:
>>>>>>
>>>>>>
>>>>>> Ah, yeah, that assumption would be a problem.
>>>>>>
>>>>>> So, Hemant, does
>>>>>> ceph osd dump <poolname> <objectname>
>>>>>>
>>>>>> show you information that makes sense?
>>>>>>
>>>>>>
>>>>>> On 09/26/2012 08:21 AM, Sage Weil wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Wed, 26 Sep 2012, hemant surale wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Hi Dan ,
>>>>>>>> I have set replication factor to 3 of pool 'newbyh' . Then
>>>>>>>> when
>>>>>>>> i
>>>>>>>> tried to execute cmds told by you I got that it reported like
>>>>>>>>
>>>>>>>> ----------------------------------------------------
>>>>>>>> root@third-virtual-machine:~# osdmaptool --test-map-object Obj1
>>>>>>>> osdmap
>>>>>>>> osdmaptool: osdmap file 'osdmap'
>>>>>>>> object 'Obj1' -> 0.c3c4 -> [0,1]
>>>>>>>> -----------------------------------------------------
>>>>>>>>
>>>>>>>> I even checked manually the dirs at every node . it shows proper data
>>>>>>>> available within osd0,osd1 & osd2 . ( i hve 3 node cluster using VM
>>>>>>>> Ceph v0.36 )
>>>>>>>>
>>>>>>>> So my questions is why in above execution it shows that Obj1 is at
>>>>>>>> [0,1] .. it should report all nodes like [0,1,2] .
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> The --test-map-object is currently somewhat useless because it assumes
>>>>>>> pool 0 ('data'), and your object is probably in a different pool.
>>>>>>>
>>>>>>> sage
>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> -
>>>>>>>> Hemant Surale.
>>>>>>>>
>>>>>>>> On Wed, Sep 26, 2012 at 2:04 AM, Dan Mick <dan.mick@xxxxxxxxxxx>
>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Hemant:
>>>>>>>>>
>>>>>>>>> Yes, you can. Use ceph osd getmap -o <file> to get the OSD map, and
>>>>>>>>> then
>>>>>>>>> use osdmaptool --find-object-map <objectname> <file> to output the
>>>>>>>>> PG the object hashes to and the list of OSDs that PG maps to
>>>>>>>>> (primary
>>>>>>>>> first):
>>>>>>>>>
>>>>>>>>> $ ceph osd getmap -o osdmap
>>>>>>>>> got osdmap epoch 59
>>>>>>>>> $ osdmaptool --test-map-object dmick.rbd osdmap
>>>>>>>>> osdmaptool: osdmap file 'osdmap'
>>>>>>>>> object 'dmick.rbd' -> 0.69c8 -> [3,1]
>>>>>>>>>
>>>>>>>>> shows dmick.rbd mapping to pg 0.69c8, which in turn maps to OSDs 3
>>>>>>>>> and
>>>>>>>>> 1, 3
>>>>>>>>> being the primary.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 09/25/2012 02:30 AM, hemant surale wrote:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Hi Community,
>>>>>>>>>> Is it possible to identify where exactly primary copy
>>>>>>>>>> of
>>>>>>>>>> obj
>>>>>>>>>> is stored ? I am using crushmaps to use specific osds for data
>>>>>>>>>> placement but i want to knw the primary capoy location. Or I need
>>>>>>>>>> to
>>>>>>>>>> replace pseudo random function by some deterministic function to
>>>>>>>>>> guide
>>>>>>>>>> ceph to utilize specific osd?
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Regards,
>>>>>>>>>> Hemant Surale.
>>>>>>>>>> --
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>>>>>>>>>> ceph-devel"
>>>>>>>>>> in
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>>>>>>>>>>
>>>>>>>>>
>>>>>>>> --
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>>>>>>>>
>>>>>>>>
>>>>>>
>>>>
>>
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