Re: Pool size (capacity)

[Sébastien VIGNERON <sebastien.vigneron@xxxxxxxxx>]

Correct, sorry, I have just read the first question and answered too quickly.

As fas as I know the space available is "shared" (the space is a combination of OSD drives and crushmap ) between pools using the same device class but you can define quota for each pool if needed.

ceph osd pool set-quota <poolname> max_objects|max_bytes <val>        set object or byte limit on pool

ceph osd pool get-quota <poolname>                                    obtain object or byte limits for pool

You can use "ceph df detail" to see you pools usage including quota. As the space is "shared", you can't determine a max size for just one pool (except if you have only one pool).

# ceph df detail

GLOBAL:

    SIZE     AVAIL     RAW USED     %RAW USED     OBJECTS

    144T      134T       10254G          6.93       1789k

POOLS:

    NAME                    ID     QUOTA OBJECTS     QUOTA BYTES     USED       %USED     MAX AVAIL     OBJECTS     DIRTY     READ      WRITE      RAW USED

    pool1                   9      N/A               N/A              7131G     14.70        41369G     1826183     1783k     3847k     14959k       21394G

    pool2                   10     N/A               N/A             24735M      0.06        41369G        6236      6236     1559k       226k       74205M

    pool3                   11     N/A               N/A             30188k         0        41369G          29        29     1259k      4862k       90564k

    pool4                   12     N/A               N/A                  0         0        41369G           0         0         0          0            0

    pool5                   13     N/A               N/A                  0         0        41369G           0         0         0          0            0

    pool6                   14     N/A               N/A                  0         0        41369G           0         0         0          0            0

    pool7                   15     N/A               N/A                  0         0        41369G           0         0         0          0            0

    pool8                   16     N/A               N/A                  0         0        41369G           0         0         0          0            0

    pool9                   17     N/A               N/A                  0         0        41369G           0         0         0          0            0

    pool10                  18     N/A               N/A                  0         0        41369G           0         0         0          0            0

    .rgw.root               19     N/A               N/A               2134         0        41369G           6         6       231          6         6402

    default.rgw.control     20     N/A               N/A                  0         0        41369G           8         8         0          0            0

    default.rgw.meta        21     N/A               N/A                363         0        41369G           2         2        12          3         1089

    default.rgw.log         22     N/A               N/A                  0         0        41369G         207       207     8949k      5962k            0

You should seek for used and max sizes for images, not pools.

# rbd disk-usage your_pool/your_image

NAME         PROVISIONED    USED

image-1      51200M         102400k

You can see the total provisioned and used sizes for a whole pool using:

# rbd disk-usage -p your_pool --format json | jq .

{

  "images": [

    {

      "name": "image-1",

      "provisioned_size": 53687091200,

      "used_size": 104857600

    }

  ],

  "total_provisioned_size": 53687091200,

  "total_used_size": 104857600

}

A reminder: most ceph commands can output in json format ( --format=json  or -f json), useful with the jq tool.

Le 20 juil. 2018 à 12:26, sinan@xxxxxxxx a écrit :

Hi Sebastien,

Your command(s) returns the replication size and not the size in terms of
bytes.

I want to see the size of a pool in terms of bytes.
The MAX AVAIL in "ceph df" is:
[empty space of an OSD disk with the least empty space] multiplied by
[amount of OSD]

That is not what I am looking for.

Thanks.
Sinan

# for a specific pool:

ceph osd pool get your_pool_name size

Le 20 juil. 2018 à 10:32, Sébastien VIGNERON
<sebastien.vigneron@xxxxxxxxx> a écrit :

#for all pools:
ceph osd pool ls detail

Le 20 juil. 2018 à 09:02, sinan@xxxxxxxx a écrit :

Hi,

How can I see the size of a pool? When I create a new empty pool I can
see
the capacity of the pool using 'ceph df', but as I start putting data
in
the pool the capacity is decreasing.

So the capacity in 'ceph df' is returning the space left on the pool
and
not the 'capacity size'.

Thanks!

Sinan

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com