Date: Fri, 25 Jan 2019 15:43:54 +0100 From: Christian Baer <christian.baer@uni-dortmund.de> To: freebsd-questions@freebsd.org Subject: enlarging a ZFS file system Message-ID: <85fc7b92-3e40-33e2-b079-91d04944d13a@informatik.uni-dortmund.de>
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Hey again everyone! I have a system with 5 drives running a RAIDZ2. The file system is getting a little cramped, so I would like to extend it. Ideally I'd like to add 2 or three (identical) drives to the pool, let the system work a little and then have a result as if I'd created the whole thing from the start with 7 or 8 drives. Just to be clear: The result should be a RAIDZ2 with 7 or 8 drives (depending on how many I add). A couple of years back, I read up on if this were possible and the only way to enlarge a RAIDZ at the time was to replace *all* the existing drives piece by piece with bigger ones and let the RAID heal drive by drive. During my research I did stumble on a thread where developers of ZFS were discussing that what I would like to do was actually a good idea and a relatively widely requested feature. I didn't participate in the discussion and for some reason cannot find it anymore. I must admit that I didn't save the URL at the time. :-( Has there been any development in this direction? Can what I'd like to do be done with FreeBSD today? The drives in question are used for archive purposes and don't really see much action, so I am not worried that they will die it the data on them gets copied around a fair bit. Y'all have a nice weekend! ;-) Regards, Chris
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