Re: [Gluster-devel] How to enable direct io??
There are two things you need to change for o-direct to be handled properly in gluster stack: 1) gluster volume set performance.strict-o-direct on on nfs this option is gluster volume set performance.nfs.strict-o-direct on 2) gluster volume set network.remote-dio off Please note that we found a bug in o-direct reads which happen sometime, which is fixed by http://review.gluster.org/14639 Without this patch you may get EINVAL for reads sometimes. Pranith On Fri, Jun 17, 2016 at 7:04 PM, Keiviw wrote: > By "mount -t glusterfs :/testvol -o direct-io-mode=true > mountpoint",the GlusterFS client will enable the direct io, and the file > will not cached in the GlusterFS client,but it won't work in the GlusterFS > server. By defalut,the GlusterFS will ignore the direct io flag. How to > make the server work in direct-io-mode?? > > > > > ___ > Gluster-devel mailing list > Gluster-devel@gluster.org > http://www.gluster.org/mailman/listinfo/gluster-devel > -- Pranith ___ Gluster-devel mailing list Gluster-devel@gluster.org http://www.gluster.org/mailman/listinfo/gluster-devel
[Gluster-devel] How to enable direct io??
By "mount -t glusterfs :/testvol -o direct-io-mode=true mountpoint",the GlusterFS client will enable the direct io, and the file will not cached in the GlusterFS client,but it won't work in the GlusterFS server. By defalut,the GlusterFS will ignore the direct io flag. How to make the server work in direct-io-mode??___ Gluster-devel mailing list Gluster-devel@gluster.org http://www.gluster.org/mailman/listinfo/gluster-devel
Re: [Gluster-devel] How to enable DIRECT IO?
Thank you for your reply.My glusterfs version is 3.3.2, the network.remote-dio and strict-o-direct didn't exist. In the mailing list you shared to me just now ,he was also confused that what is a surefire way to get direct-io-like behavior on gluster volume(s)? I mounted the glusterfs to the mountpoint(glusterfs) with direct-io-mode=enable,but when I executed "cp ./test1.mp4 /mnt/glusterfs/ " ,and then I executed "free -m " to check the size of cached, it got larger.The test1.mp4 is 2.5G, finally.the cached size is 2600M At 2016-03-22 16:20:44, "Raghavendra Gowdappa" wrote: > > >- Original Message - >> From: "Keiviw" >> To: gluster-devel@gluster.org >> Sent: Tuesday, March 22, 2016 1:18:18 PM >> Subject: [Gluster-devel] How to enable DIRECT IO? >> >> hi, >> In the glusterfs client, execute "mount -t glusterfs volumename -o >> direct-io-mode=enable mountpoint". >> Does it mean that the client reads or writes the cluster files in the way of >> DIRECT IO? If not,how to enable DIRECT IO? > >This might help: >http://www.gluster.org/pipermail/gluster-devel/2016-February/048425.html > >regards, >Raghavendra ___ Gluster-devel mailing list Gluster-devel@gluster.org http://www.gluster.org/mailman/listinfo/gluster-devel
Re: [Gluster-devel] How to enable DIRECT IO?
- Original Message - > From: "Keiviw" > To: gluster-devel@gluster.org > Sent: Tuesday, March 22, 2016 1:18:18 PM > Subject: [Gluster-devel] How to enable DIRECT IO? > > hi, > In the glusterfs client, execute "mount -t glusterfs volumename -o > direct-io-mode=enable mountpoint". > Does it mean that the client reads or writes the cluster files in the way of > DIRECT IO? If not,how to enable DIRECT IO? This might help: http://www.gluster.org/pipermail/gluster-devel/2016-February/048425.html regards, Raghavendra ___ Gluster-devel mailing list Gluster-devel@gluster.org http://www.gluster.org/mailman/listinfo/gluster-devel
[Gluster-devel] How to enable DIRECT IO?
hi, In the glusterfs client, execute "mount -t glusterfs volumename -o direct-io-mode=enable mountpoint". Does it mean that the client reads or writes the cluster files in the way of DIRECT IO? If not,how to enable DIRECT IO?___ Gluster-devel mailing list Gluster-devel@gluster.org http://www.gluster.org/mailman/listinfo/gluster-devel
