[Gluster-devel] DHT xlator, read and write a file during creating a new file

Sanoj Unnikrishnan sunnikri at redhat.com
Wed May 3 10:28:06 UTC 2017

I am not sure, if i got your requirement correctly.
If you need to have the file count and directory count of each brick
individually (without aggregation), you could get that by a getxattr of
trusted.glusterfs.quota.size on the brick.
The size xattr value can be interpreted as follows:
getfattr -d -m. -e hex ' <path >
size: first 16 bytes
filecount: Next 16 bytes
dircount: Last 16 bytes


On Wed, May 3, 2017 at 12:20 PM, Tahereh Fattahi <t28.fattahi at gmail.com>

> Thank you
> I need this information divided to bricks.
> On Tue, May 2, 2017 at 11:07 PM, Vijay Bellur <vbellur at redhat.com> wrote:
>> On Tue, May 2, 2017 at 8:00 AM, Tahereh Fattahi <t28.fattahi at gmail.com>
>> wrote:
>>> Hi
>>> I want to use a file as a counter when I create a file in dht xlator.
>>> I mean, after creating a new file,  I want open a file in the same
>>> directory with a special name, read that, update the counter and write
>>> back.
>>> I think for this purpose I  should open in dht_create_cbk, read in
>>> dht_open_cbk and write in dht_readv_cbk.
>>> I think I should use dht_open , dht_readv and dht_writev. Maybe I could
>>> create inputs for these function expect frame! is it correct to use the
>>> frame fro dht_create function?
>>> Is this scenario correct or there is better way?
>> Have you tried the object count feature [1] ?
>> Regards,
>> Vijay
>> [1] http://gluster-documentations.readthedocs.io/en/latest/Featu
>> res/quota-object-count/
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