Re: [Gluster-devel] readdir vs readdirp
- Original Message - From: Vijay Bellur vbel...@redhat.com To: Dan Lambright dlamb...@redhat.com, Gluster Devel gluster-devel@gluster.org Sent: Saturday, February 7, 2015 7:45:49 PM Subject: Re: [Gluster-devel] readdir vs readdirp On 02/06/2015 02:03 PM, Dan Lambright wrote: Hi All, I hope this is not an overly stupid question.. Does anyone know a good way to test readdir (not readdirplus) on gluster? I see in : bugs/replicate/886998/strict-readdir.t .. that there is a switch cluster.strict-readdir. It does not appear to work, or be referenced in the code - perhaps I am missing something. I also tried mounting nfs with the nordirplus option, this did not produce the desired results either, surprisingly. With fuse client, I suspect you would need to do the following to let readdir fop percolate through the stack: 1. mount client with --use-readdirp=no. This will bypass readdirplus in fuse. 2. Disable md-cache. md-cache by default converts all readdir operations to readdirplus for its functioning. Thanks. This procedure worked, although rather than disabling md-cache, I used a switch to disable readdirp operations *md-cache.force-readdirp=no. glusterfs --volfile-id=/t --volfile-server=gprfs018 /mnt2 --use-readdirp=no --xlator-option *dht.use-readdirp=no --xlator-option *md-cache.force-readdirp=no 3. Prevent dht from doing readdirp by default. While mounting, you could pass --xlator-option *dht.use-readdrip=no to prevent readdir to readdirp conversions in dht. -Vijay ___ Gluster-devel mailing list Gluster-devel@gluster.org http://www.gluster.org/mailman/listinfo/gluster-devel
Re: [Gluster-devel] readdir vs readdirp
On 02/06/2015 02:03 PM, Dan Lambright wrote: Hi All, I hope this is not an overly stupid question.. Does anyone know a good way to test readdir (not readdirplus) on gluster? I see in : bugs/replicate/886998/strict-readdir.t .. that there is a switch cluster.strict-readdir. It does not appear to work, or be referenced in the code - perhaps I am missing something. I also tried mounting nfs with the nordirplus option, this did not produce the desired results either, surprisingly. With fuse client, I suspect you would need to do the following to let readdir fop percolate through the stack: 1. mount client with --use-readdirp=no. This will bypass readdirplus in fuse. 2. Disable md-cache. md-cache by default converts all readdir operations to readdirplus for its functioning. 3. Prevent dht from doing readdirp by default. While mounting, you could pass --xlator-option *dht.use-readdrip=no to prevent readdir to readdirp conversions in dht. -Vijay ___ Gluster-devel mailing list Gluster-devel@gluster.org http://www.gluster.org/mailman/listinfo/gluster-devel
[Gluster-devel] readdir vs readdirp
Hi All, I hope this is not an overly stupid question.. Does anyone know a good way to test readdir (not readdirplus) on gluster? I see in : bugs/replicate/886998/strict-readdir.t .. that there is a switch cluster.strict-readdir. It does not appear to work, or be referenced in the code - perhaps I am missing something. I also tried mounting nfs with the nordirplus option, this did not produce the desired results either, surprisingly. I suppose its always possible to load older pre-readdirp versions of Linux. Thanks, Dan ___ Gluster-devel mailing list Gluster-devel@gluster.org http://www.gluster.org/mailman/listinfo/gluster-devel
