Date: Tue, 14 Apr 2015 12:13:40 -0600 From: John Nielsen <lists@jnielsen.net> To: lev@FreeBSD.org Cc: freebsd-fs@freebsd.org Subject: =?utf-8?Q?Re=3A_ZFS=3A_replace_all_disks_on_new=2C_larger_ones?= =?utf-8?Q?=2C_in_mirror_or_zraid=5B2=5D_=E2=80=94_will_it_work?= =?utf-8?Q?=3F?= Message-ID: <58B1231B-5408-443F-B5E3-4086CE618D47@jnielsen.net> In-Reply-To: <552D56E0.2040307@FreeBSD.org> References: <552D56E0.2040307@FreeBSD.org>
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On Apr 14, 2015, at 12:05 PM, Lev Serebryakov <lev@freebsd.org> wrote: > Say, I have ZFS pool consist of raidz vdev with 3x1TB disks. It is > 2Tb effective storage space, right? Now I could remove 1 disk (as > failed one) and replace it with new, 2TB HDD. After resilvering I > could replace second 1TB HDD, and, then, third one. Now I have raidz > vdev with 3x2TB disks. Will I have 4TB effective storage space in my = poo > l? >=20 > I know, that it is impossible to add NEW disk to raidz, but here is > replacement smaller disks with larger ones, one-by-one. >=20 > The same question could be asked about mirror and raidz2/raidz3 :) Yes, that is the recommended way to increase the capacity of an existing = vdev and I have done that more than once. Once you have replaced all the = devices and the vdev is finished resilvering, a =E2=80=9Czpool online -e = =E2=80=A6=E2=80=9D will make the additional space available. JN
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