Urm, Yes I can .. although I meant "filesystem information" generically rather than "ls". My "real" test is using "find" .. which is unaffected by "unalias ls" .. If your question is; After "unalias ls" does the client still read filesystem information from BOTH servers"? The answer is; Yes .. according to tcpdump. Gareth. -- Managing Director, Encryptec Limited Tel: 0845 5082719, Mob: 0785 3305393 Email: gareth@xxxxxxxxxxxxx Statements made are at all times subject to Encryptec's Terms and Conditions of Business, which are available upon request. ----- Original Message ----- From: "Krishna Srinivas" <krishna@xxxxxxxxxxxxx> To: "Gareth Bult" <gareth@xxxxxxxxxxxxx> Cc: "gluster-devel Glister Devel List" <gluster-devel@xxxxxxxxxx> Sent: Wednesday, April 23, 2008 12:56:27 PM GMT +00:00 GMT Britain, Ireland, Portugal Subject: Re: Re; Load balancing ... Gordon, can you do "unalias ls" and see if ls is still slow? Krishna On Wed, Apr 23, 2008 at 3:14 PM, Gareth Bult <gareth@xxxxxxxxxxxxx> wrote: > Hi, I'm using fuse-2.7.2glfs9 and glusterfs-1.3.8pre5 .. > > Using AFR and "option read-subvolume" I'm expecting to be able to tell a client which server to prefer to read data from. Although this seems to work for pure data, it does not appear to work for file-system information .. so "dd" on a large file is quick and "ls" is very slow. > > Can anyone tell me if "read-subvolume" should affect filesystem data and whether there is a way of speeding up what I'm doing. > i.e. can I tell it which volume to prefer for filesystem information lookups? > > (effectively this is a read-mostly server running over a slow link .. basicall reads are good, "ls"'s are impossibly slow) > > tia > > --- Server --- > > volume brick-raw > type storage/posix > option directory /vols/home/export > end-volume > > volume brick > type features/posix-locks > subvolumes brick-raw > option mandatory on > end-volume > > volume server > type protocol/server > option transport-type tcp/server > option auth.ip.brick.allow <ip's> > subvolumes brick > end-volume > > --- Client --- > volume brick1 > type protocol/client > option transport-type tcp/client > option remote-host brick1 > option remote-subvolume brick > end-volume > > volume brick2 > type protocol/client > option transport-type tcp/client > option remote-host brick2 > option remote-subvolume brick > end-volume > > volume afr > type cluster/afr > subvolumes brick1 brick2 > option read-subvolume brick1 > end-volume > > volume writebehind > type performance/write-behind > option aggregate-size 131072 > subvolumes afr > end-volume > > volume readahead > type performance/read-ahead > option page-size 65536 > option page-count 16 > subvolumes writebehind > end-volume > > -- > Managing Director, Encryptec Limited > Tel: 0845 5082719, Mob: 0785 3305393 > Email: gareth@xxxxxxxxxxxxx > Statements made are at all times subject to Encryptec's Terms and Conditions of Business, which are available upon request. > _______________________________________________ > Gluster-devel mailing list > Gluster-devel@xxxxxxxxxx > http://lists.nongnu.org/mailman/listinfo/gluster-devel >
