Hi,
some Input/Output error issues have been identified and fixed. These
fixes will be available on 3.7.1.
Xavi
On 05/26/2015 10:15 AM, Mohamed Pakkeer wrote:
Hi Glusterfs Experts,
We are testing glusterfs 3.7.0 tarball on our 10 Node glusterfs cluster.
Each node has 36 dirves and please find the volume info below
Volume Name: vaulttest5
Type: Distributed-Disperse
Volume ID: 68e082a6-9819-4885-856c-1510cd201bd9
Status: Started
Number of Bricks: 36 x (8 + 2) = 360
Transport-type: tcp
Bricks:
Brick1: 10.1.2.1:/media/disk1
Brick2: 10.1.2.2:/media/disk1
Brick3: 10.1.2.3:/media/disk1
Brick4: 10.1.2.4:/media/disk1
Brick5: 10.1.2.5:/media/disk1
Brick6: 10.1.2.6:/media/disk1
Brick7: 10.1.2.7:/media/disk1
Brick8: 10.1.2.8:/media/disk1
Brick9: 10.1.2.9:/media/disk1
Brick10: 10.1.2.10:/media/disk1
Brick11: 10.1.2.1:/media/disk2
Brick12: 10.1.2.2:/media/disk2
Brick13: 10.1.2.3:/media/disk2
Brick14: 10.1.2.4:/media/disk2
Brick15: 10.1.2.5:/media/disk2
Brick16: 10.1.2.6:/media/disk2
Brick17: 10.1.2.7:/media/disk2
Brick18: 10.1.2.8:/media/disk2
Brick19: 10.1.2.9:/media/disk2
Brick20: 10.1.2.10:/media/disk2
...
....
Brick351: 10.1.2.1:/media/disk36
Brick352: 10.1.2.2:/media/disk36
Brick353: 10.1.2.3:/media/disk36
Brick354: 10.1.2.4:/media/disk36
Brick355: 10.1.2.5:/media/disk36
Brick356: 10.1.2.6:/media/disk36
Brick357: 10.1.2.7:/media/disk36
Brick358: 10.1.2.8:/media/disk36
Brick359: 10.1.2.9:/media/disk36
Brick360: 10.1.2.10:/media/disk36
Options Reconfigured:
performance.readdir-ahead: on
We did some performance testing and simulated the proactive self healing
for Erasure coding. Disperse volume has been created across nodes.
_*Description of problem*_
I disconnected the *network of two nodes* and tried to write some video
files and *glusterfs* *wrote the video files on balance 8 nodes
perfectly*. I tried to download the uploaded file and it was downloaded
perfectly. Then i enabled the network of two nodes, the pro active self
healing mechanism worked perfectly and wrote the unavailable junk of
data to the recently enabled node from the other 8 nodes. But when i
tried to download the same file node, it showed Input/Output error. I
couldn't download the file. I think there is an issue in pro active self
healing.
Also we tried the simulation with one node network failure. We faced
same I/O error issue while downloading the file
_Error while downloading file _
_
_
root@master02:/home/admin# rsync -r --progress /mnt/gluster/file13_AN
./1/file13_AN-2
sending incremental file list
file13_AN
3,342,355,597 100% 4.87MB/s 0:10:54 (xfr#1, to-chk=0/1)
rsync: read errors mapping "/mnt/gluster/file13_AN": Input/output error (5)
WARNING: file13_AN failed verification -- update discarded (will try again).
root@master02:/home/admin# cp /mnt/gluster/file13_AN ./1/file13_AN-3
cp: error reading ‘/mnt/gluster/file13_AN’: Input/output error
cp: failed to extend ‘./1/file13_AN-3’: Input/output error_
_
We can't conclude the issue with glusterfs 3.7.0 or our glusterfs
configuration.
Any help would be greatly appreciated
--
Cheers
Backer
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