Would the booster, writebehind or iothreads translators provide any help in this setup to reduce potential blocking of the local client writer due to NFS slowness? ________________________________ From: basavanagowda at gmail.com [mailto:basavanagowda at gmail.com] On Behalf Of Basavanagowda Kanur Sent: Thursday, November 20, 2008 10:37 AM To: Aleynikov, Serge Cc: gluster-users at gluster.org Subject: Re: Gluster setup question On Thu, Nov 20, 2008 at 9:01 PM, Aleynikov, Serge <Serge.Aleynikov at gs.com> wrote: I built it from glusterfs-1.3.12.tag.gz source. my replies in previous mail hold good. ________________________________ From: basavanagowda at gmail.com [mailto:basavanagowda at gmail.com] On Behalf Of Basavanagowda Kanur Sent: Wednesday, November 19, 2008 10:50 PM To: Aleynikov, Serge Cc: gluster-users at gluster.org Subject: Re: Gluster setup question Serge, I am assuming you are not using source code from repository. If you are using source code directly from repository, then answers below might not hold good. Please mention the version, if you are using from source repository. On Thu, Nov 20, 2008 at 6:13 AM, Aleynikov, Serge <Serge.Aleynikov at gs.com> wrote: Hi, I am running several clients writing to local disk that are setup to replicate data to N glusterfs server processes that use NFS for storing this data. I have the following questions: 1. Does every write of a process to a local directory managed by glusterfs client involve syncronous replication of data to glusterfs server? yes. it involves synchronous replication. glusterfs--mailine--3.0--patch-621 (onwards) in our source repository has an AFR feature called quick-unwind, which would make replication asychronous. 2. Is it possible that if NFS is slow on the glusterfs server side, then writing to local disk of a process on the glusterfs client's machine would block? yes. fops on glusterfs will block. Thanks. Serge _______________________________________________ Gluster-users mailing list Gluster-users at gluster.org http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users -- gowda -- gowda -------------- next part -------------- An HTML attachment was scrubbed... URL: http://zresearch.com/pipermail/gluster-users/attachments/20081120/ff0c9c1b/attachment.htm
