[Gluster-users] [Gluster-devel] Fwd: dht_is_subvol_filled messages on client

[Serkan Çoban]

I also checked the df output all 20 bricks are same like below:
/dev/sdu1 7.3T 34M 7.3T 1% /bricks/20

On Tue, May 3, 2016 at 1:40 PM, Raghavendra G <raghavendra at gluster.com> wrote:
>
>
> On Mon, May 2, 2016 at 11:41 AM, Serkan Çoban <cobanserkan at gmail.com> wrote:
>>
>> >1. What is the out put of du -hs <back-end-export>? Please get this
>> > information for each of the brick that are part of disperse.
>
>
> Sorry. I needed df output of the filesystem containing brick. Not du. Sorry
> about that.
>
>>
>> There are 20 bricks in disperse-56 and the du -hs output is like:
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 1.8M /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>> 80K /bricks/20
>>
>> I see that gluster is not writing to this disperse set. All other
>> disperse sets are filled 13GB but this one is empty. I see directory
>> structure created but no files in directories.
>> How can I fix the issue? I will try to rebalance but I don't think it
>> will write to this disperse set...
>>
>>
>>
>> On Sat, Apr 30, 2016 at 9:22 AM, Raghavendra G <raghavendra at gluster.com>
>> wrote:
>> >
>> >
>> > On Fri, Apr 29, 2016 at 12:32 AM, Serkan Çoban <cobanserkan at gmail.com>
>> > wrote:
>> >>
>> >> Hi, I cannot get an answer from user list, so asking to devel list.
>> >>
>> >> I am getting [dht-diskusage.c:277:dht_is_subvol_filled] 0-v0-dht:
>> >> inodes on subvolume 'v0-disperse-56' are at (100.00 %), consider
>> >> adding more bricks.
>> >>
>> >> message on client logs.My cluster is empty there are only a couple of
>> >> GB files for testing. Why this message appear in syslog?
>> >
>> >
>> > dht uses disk usage information from backend export.
>> >
>> > 1. What is the out put of du -hs <back-end-export>? Please get this
>> > information for each of the brick that are part of disperse.
>> > 2. Once you get du information from each brick, the value seen by dht
>> > will
>> > be based on how cluster/disperse aggregates du info (basically statfs
>> > fop).
>> >
>> > The reason for 100% disk usage may be,
>> > In case of 1, backend fs might be shared by data other than brick.
>> > In case of 2, some issues with aggregation.
>> >
>> >> Is is safe to
>> >> ignore it?
>> >
>> >
>> > dht will try not to have data files on the subvol in question
>> > (v0-disperse-56). Hence lookup cost will be two hops for files hashing
>> > to
>> > disperse-56 (note that other fops like read/write/open still have the
>> > cost
>> > of single hop and dont suffer from this penalty). Other than that there
>> > is
>> > no significant harm unless disperse-56 is really running out of space.
>> >
>> > regards,
>> > Raghavendra
>> >
>> >> _______________________________________________
>> >> Gluster-devel mailing list
>> >> Gluster-devel at gluster.org
>> >> http://www.gluster.org/mailman/listinfo/gluster-devel
>> >
>> >
>> >
>> >
>> > --
>> > Raghavendra G
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>
>
>
>
> --
> Raghavendra G