Date: Fri, 23 Jul 2010 10:17:52 -0500 From: Tom Evans <tevans.uk@googlemail.com> To: Pawel Tyll <ptyll@nitronet.pl> Cc: freebsd-stable@freebsd.org, Dan Langille <dan@langille.org> Subject: Re: Using GTP and glabel for ZFS arrays Message-ID: <AANLkTi=pxTLod1cOjSK4SSg4eeU6CNOEB0ZVbHJjNa-f@mail.gmail.com> In-Reply-To: <718046944.20100723032259@nitronet.pl> References: <4C47B57F.5020309@langille.org> <4C48E695.6030602@langille.org> <718046944.20100723032259@nitronet.pl>
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On Thu, Jul 22, 2010 at 8:22 PM, Pawel Tyll <ptyll@nitronet.pl> wrote: >> I do not think I can adjust the existing zpool on the fly. =C2=A0I think= I >> need to copy everything elsewhere (i.e the 2 empty drives). =C2=A0Then s= tart >> the new zpool from scratch. > You can, and you should (for educational purposes if not for fun :>), > unless you wish to change raidz1 to raidz2. Replace, wait for > resilver, if redoing used disk then offline it, wipe magic with dd > (16KB at the beginning and end of disk/partition will do), carry on > with GPT, rinse and repeat with next disk. When last vdev's replace > finishes, your pool will grow automagically. > If you do do it like this, be sure to leave the drive you are replacing attached to the array. Otherwise, in a raidz, if you were to suffer a disk failure on one of the other disks whilst replacing/growing the array, your raidz would be badly broken. Other than that, I can thoroughly recommend this method, I had data on 2 x 1.5 TB drives, and set up my raidz initially with 4 x 1.5 TB, 2 x 0.5 TB, copying data off the 1.5 TB drives onto the array and replacing each 0.5 TB drive when done. Cheers Tom
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