Hi Greg,
ok!
It's looks like, that my problem is more setomapval-related...
I must o something like
rados -p ssd-archiv setomapval rbd_directory name_vm-409-disk-2 "\0x0f\0x00\0x00\0x00"2cfc7ce74b0dc51
but "rados setomapval" don't use the hexvalues - instead of this I got
rados -p ssd-archiv listomapvals rbd_directory
name_vm-409-disk-2
value: (35 bytes) :
0000 : 5c 30 78 30 66 5c 30 78 30 30 5c 30 78 30 30 5c : \0x0f\0x00\0x00\
0010 : 30 78 30 30 32 63 66 63 37 63 65 37 34 62 30 64 : 0x002cfc7ce74b0d
0020 : 63 35 31 : c51
hmm, strange. With "rados -p ssd-archiv getomapval rbd_directory name_vm-409-disk-2 name_vm-409-disk-2"
I got the binary inside the file name_vm-409-disk-2, but reverse do an
"rados -p ssd-archiv setomapval rbd_directory name_vm-409-disk-2 name_vm-409-disk-2"
fill the variable with name_vm-409-disk-2 and not with the content of the file...
Are there other tools for the rbd_directory?
regards
Udo
Am 26.03.2015 15:03, schrieb Gregory Farnum:
> You shouldn't rely on "rados ls" when working with cache pools. It
> doesn't behave properly and is a silly operation to run against a pool
> of any size even when it does. :)
>
> More specifically, "rados ls" is invoking the "pgls" operation. Normal
> read/write ops will go query the backing store for objects if they're
> not in the cache tier. pgls is different — it just tells you what
> objects are present in the PG on that OSD right now. So any objects
> which aren't in cache won't show up when listing on the cache pool.
> -Greg
>
> On Thu, Mar 26, 2015 at 3:43 AM, Udo Lembke <ulembke@xxxxxxxxxxxx> wrote:
>> Hi all,
>> due an very silly approach, I removed the cache tier of an filled EC pool.
>>
>> After recreate the pool and connect with the EC pool I don't see any content.
>> How can I see the rbd_data and other files through the new ssd cache tier?
>>
>> I think, that I must recreate the rbd_directory (and fill with setomapval), but I don't see anything yet!
>>
>> $ rados ls -p ecarchiv | more
>> rbd_data.2e47de674b0dc51.0000000000390074
>> rbd_data.2e47de674b0dc51.000000000020b64f
>> rbd_data.2fbb1952ae8944a.000000000016184c
>> rbd_data.2cfc7ce74b0dc51.0000000000363527
>> rbd_data.2cfc7ce74b0dc51.000000000004c35f
>> rbd_data.2fbb1952ae8944a.000000000008db43
>> rbd_data.2cfc7ce74b0dc51.000000000015895a
>> rbd_data.31229f0238e1f29.00000000000135eb
>> ...
>>
>> $ rados ls -p ssd-archiv
>> #### nothing ####
>>
>> generation of the cache tier:
>> $ rados mkpool ssd-archiv
>> $ ceph osd pool set ssd-archiv crush_ruleset 5
>> $ ceph osd tier add ecarchiv ssd-archiv
>> $ ceph osd tier cache-mode ssd-archiv writeback
>> $ ceph osd pool set ssd-archiv hit_set_type bloom
>> $ ceph osd pool set ssd-archiv hit_set_count 1
>> $ ceph osd pool set ssd-archiv hit_set_period 3600
>> $ ceph osd pool set ssd-archiv target_max_bytes 50000000000
>>
>>
>> rule ssd {
>> ruleset 5
>> type replicated
>> min_size 1
>> max_size 10
>> step take ssd
>> step choose firstn 0 type osd
>> step emit
>> }
>>
>>
>> Are there any "magic" (or which command I missed?) to see the excisting data throug the cache tier?
>>
>>
>> regards - and hoping for answers
>>
>> Udo
>> _______________________________________________
>> ceph-users mailing list
>> ceph-users@xxxxxxxxxxxxxx
>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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