Date: 15 Jul 2013 16:23:26 -0000 From: Scott Ballantyne <sdb@ssr.com> To: freebsd-questions@freebsd.org Subject: Adding another mirror to existing ZFS-root mirror? Message-ID: <20130715162326.2571.qmail@irelay.ssr.com> References: <20130629162457.95950.qmail@irelay.ssr.com> <20130629191109.cd9444c9.freebsd@edvax.de> <20130629202823.97250.qmail@irelay.ssr.com>
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Hi, I have the current situation: sdb@gigawattmomma$ zpool status zroot NAME STATE READ WRITE CKSUM zroot ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 gpt/disk0 ONLINE 0 0 0 gpt/disk1 ONLINE 0 0 0 I boot directly from this. This article from Oracle: http://docs.oracle.com/cd/E19253-01/819-5461/gazgw/index.html implies I can add two more disks to the zroot pool with a zpool add zroot mirror disk2 disk3 to get zroot mirror-0 gpt/disk0 gpt/disk1 mirror-1 gpt/disk2 gpt/disk3 My questions: 1) Will booting still work? What do I need to do to make sure I can still boot up the system? Perhaps related: 2) How do I use gpart to prep these disks? The current mirror has the usual three partitions (freebsd-boot, freebsd-swap and freebsd-zfs), with boot code installed, obviously. Do I need to do that with the second mirror, or can I just use the whole thing for a freebsd-zfs filesystem? Sorry this was a bit long. Thanks in advance for any help. Best, Scott -- sdb@ssr.com
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