[Gluster-devel] Input/output error when files in .shard folder are deleted

[Krutika Dhananjay]

Tried it locally on my setup. Worked fine.

Could you please attach the mount logs?

-Krutika

On Tue, Oct 25, 2016 at 6:55 PM, Pranith Kumar Karampuri <
pkarampu at redhat.com> wrote:

> +Krutika
>
> On Mon, Oct 24, 2016 at 4:10 PM, qingwei wei <tchengwee at gmail.com> wrote:
>
>> Hi,
>>
>> I am currently running a simple gluster setup using one server node
>> with multiple disks. I realize that if i delete away all the .shard
>> files in one replica in the backend, my application (dd) will report
>> Input/Output error even though i have 3 replicas.
>>
>> My gluster version is 3.7.16
>>
>> gluster volume file
>>
>> Volume Name: testHeal
>> Type: Replicate
>> Volume ID: 26d16d7f-bc4f-44a6-a18b-eab780d80851
>> Status: Started
>> Number of Bricks: 1 x 3 = 3
>> Transport-type: tcp
>> Bricks:
>> Brick1: 192.168.123.4:/mnt/sdb_mssd/testHeal2
>> Brick2: 192.168.123.4:/mnt/sde_mssd/testHeal2
>> Brick3: 192.168.123.4:/mnt/sdd_mssd/testHeal2
>> Options Reconfigured:
>> cluster.self-heal-daemon: on
>> features.shard-block-size: 16MB
>> features.shard: on
>> performance.readdir-ahead: on
>>
>> dd error
>>
>> [root at fujitsu05 .shard]# dd of=/home/test if=/mnt/fuseMount/ddTest
>> bs=16M count=20 oflag=direct
>> dd: error reading ‘/mnt/fuseMount/ddTest’: Input/output error
>> 1+0 records in
>> 1+0 records out
>> 16777216 bytes (17 MB) copied, 0.111038 s, 151 MB/s
>>
>> in the .shard folder where i deleted all the .shard file, i can see
>> one .shard file is recreated
>>
>> getfattr -d -e hex -m.  9061198a-eb7e-45a2-93fb-eb396d1b2727.1
>> # file: 9061198a-eb7e-45a2-93fb-eb396d1b2727.1
>> trusted.afr.testHeal-client-0=0x000000010000000100000000
>> trusted.afr.testHeal-client-2=0x000000010000000100000000
>> trusted.gfid=0x41b653f7daa14627b1f91f9e8554ddde
>>
>> However, the gfid is not the same compare to the other replicas
>>
>> getfattr -d -e hex -m.  9061198a-eb7e-45a2-93fb-eb396d1b2727.1
>> # file: 9061198a-eb7e-45a2-93fb-eb396d1b2727.1
>> trusted.afr.dirty=0x000000000000000000000000
>> trusted.afr.testHeal-client-1=0x000000000000000000000000
>> trusted.bit-rot.version=0x0300000000000000580dde99000e5e5d
>> trusted.gfid=0x9ee5c5eed7964a6cb9ac1a1419de5a40
>>
>> Is this consider a bug?
>>
>> Regards,
>>
>> Cwtan
>> _______________________________________________
>> Gluster-devel mailing list
>> Gluster-devel at gluster.org
>> http://www.gluster.org/mailman/listinfo/gluster-devel
>
>
>
>
> --
> Pranith
>
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