Well, I've searched through the mailing list and have been unable to find an answer to the problem I'm currently facing. I am currently in the middle of migrating from my old 6 server storage pool running GlusterFS 3.0.4 to a new pool that will eventually consist of the same machines all running GlusterFS 3.1.1. My initial setup was all 6 servers setup as Distribute-Replicate, so that I had 3 pairs of mirrors. To effect the conversion and minimize downtime, I took down 1 of each of the mirrors and converted them (with different storage hardware) to run GlusterFS 3.1.1. This all worked fine, and production is currently running on the following setup: (1) Server running a read-write storage pool in Distribute mode configured like this: # gluster volume info Volume Name: pfs-rw1 Type: Distribute Status: Started Number of Bricks: 2 Transport-type: tcp Bricks: Brick1: jc1letgfs16-pfs1:/export/read-write/g01 Brick2: jc1letgfs16-pfs1:/export/read-write/g02 Options Reconfigured: performance.stat-prefetch: on performance.cache-size: 2GB Then I have: (2) Servers running the read-only pools in this configuration: gluster volume info Volume Name: pfs-ro1 Type: Distributed-Replicate Status: Started Number of Bricks: 10 x 2 = 20 Transport-type: tcp Bricks: Brick1: jc1letgfs17-pfs1:/export/read-only/g01 Brick2: jc1letgfs18-pfs1:/export/read-only/g01 Brick3: jc1letgfs17-pfs1:/export/read-only/g02 Brick4: jc1letgfs18-pfs1:/export/read-only/g02 Brick5: jc1letgfs17-pfs1:/export/read-only/g03 Brick6: jc1letgfs18-pfs1:/export/read-only/g03 Brick7: jc1letgfs17-pfs1:/export/read-only/g04 Brick8: jc1letgfs18-pfs1:/export/read-only/g04 Brick9: jc1letgfs17-pfs1:/export/read-only/g05 Brick10: jc1letgfs18-pfs1:/export/read-only/g05 Brick11: jc1letgfs17-pfs1:/export/read-only/g06 Brick12: jc1letgfs18-pfs1:/export/read-only/g06 Brick13: jc1letgfs17-pfs1:/export/read-only/g07 Brick14: jc1letgfs18-pfs1:/export/read-only/g07 Brick15: jc1letgfs17-pfs1:/export/read-only/g08 Brick16: jc1letgfs18-pfs1:/export/read-only/g08 Brick17: jc1letgfs17-pfs1:/export/read-only/g09 Brick18: jc1letgfs18-pfs1:/export/read-only/g09 Brick19: jc1letgfs17-pfs1:/export/read-only/g10 Brick20: jc1letgfs18-pfs1:/export/read-only/g10 Options Reconfigured: performance.cache-size: 2GB performance.stat-prefetch: on Now that all of production is off the old setup, I want to take one of those servers (suitably reconfigured with 3.1.1) and make it participate in the read-write pool, but change the Type to Distributed-Replicate. Is this possible? Thanks James Burnash, Unix Engineering DISCLAIMER: This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this in error, please immediately notify me and permanently delete the original and any copy of any e-mail and any printout thereof. E-mail transmission cannot be guaranteed to be secure or error-free. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. NOTICE REGARDING PRIVACY AND CONFIDENTIALITY Knight Capital Group may, at its discretion, monitor and review the content of all e-mail communications. http://www.knight.com
