Re: nfs bug when do dd write

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tuesday 09 December 2014 02:47 PM, shuau li wrote:
hi all,

       In my environment, I meet a nfs problem.When I do dd write for a while, nfs client will report "nfs server no responding".I think this maybe a bug of nfs server, Is anybody meet similar problem?

The details of my environment and test  are as follow:

glusterfs version:
    3.6.1
3 nodes:
  cpu with 8 core 3.20 GHz, 16 GB memory, 10000baseT/Full network card
 
I use two nodes create a replica volume with two bricks, another nodes act as client, client use protocol nfs3 to mount volume through the 10000baseT/Full network card, then use command "dd if=/dev/zero of=/mnt/ida/testdata bs=128k" to write data.

Generally, only data about 10G can be write successfully. Then client will say "nfs server ip no responding".At the same time, I use gdb to trace nfs process in nfs server, the result is that nfs server keeps staying in epoll_wait, why nfs server  can not listen requests from nfs client ?

In addition, I noticed the difference between fuse and nfs. When access through fuse, two threads will work together, one responsible for fuse-bridge, another responsible for listening socket. But in nfs, only one thread work in background, both responsible for nfs server and listening socket. Will the cause process bottleneck?

Best wishes!!

Looking forward to your reply!
 
   


Hi,

Can you please attach the nfs server and brick log files? You can find the log files in /var/log/glusterfs.

Regards,
Raghavendra Bhat



_______________________________________________
Gluster-users mailing list
Gluster-users@xxxxxxxxxxx
http://supercolony.gluster.org/mailman/listinfo/gluster-users

_______________________________________________
Gluster-users mailing list
Gluster-users@xxxxxxxxxxx
http://supercolony.gluster.org/mailman/listinfo/gluster-users

[Index of Archives]     [Gluster Development]     [Linux Filesytems Development]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux