Date: Mon, 19 Jul 2010 12:33:28 -0400 From: Garrett Moore <garrettmoore@gmail.com> To: Adam Vande More <amvandemore@gmail.com> Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: Problems replacing failing drive in ZFS pool Message-ID: <AANLkTilv55EfY24y9RsYw_NDYVsReghqM1Ydpk4tRoHN@mail.gmail.com> In-Reply-To: <AANLkTimgi2Btzv9krZZPHCPiyCcwtQyF72BmRzA1kuvi@mail.gmail.com> References: <AANLkTimOrwHe7xiwoap2H2mUtA7vU6TjENkPC4yJ02_z@mail.gmail.com> <AANLkTimOIgCIO4txpPeeoMrRSYAqM25V7cm-h7djmZUC@mail.gmail.com> <AANLkTikPOgIqkm3GhIsEnvuvEHvlc44cnh6GJQ1k7Ja_@mail.gmail.com> <AANLkTimgi2Btzv9krZZPHCPiyCcwtQyF72BmRzA1kuvi@mail.gmail.com>
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I forgot to ask in the last email, is there a way to convert from Z1 to Z2 without losing data? I actually have far more storage than I need so I'd consider going to Z2. On Mon, Jul 19, 2010 at 12:18 PM, Adam Vande More <amvandemore@gmail.com>wrote: > On Mon, Jul 19, 2010 at 10:56 AM, Garrett Moore <garrettmoore@gmail.com>wrote: > >> So you think it's because when I switch from the old disk to the new disk, >> ZFS doesn't realize the disk has changed, and thinks the data is just >> corrupt now? Even if that happens, shouldn't the pool still be available, >> since it's RAIDZ1 and only one disk has gone away? >> >> I don't have / on ZFS; I'm only using it as a 'data' partition, so I >> should >> be able to try your suggestion. My only concern: is there any risk of >> trashing my pool if I try your instructions? Everything I've done so far, >> even when told "insufficient replicas / corrupt data", has not cost me any >> data as long as I switch back to the original (dying) drive. If I mix in >> export/import statements which might 'touch' the pool, is there a chance >> it >> will choke and trash my data? >> > > I'm not sure what's going on in your case, but I have cron'd a zpool scrub > for my pool on weekly basis to avoid this. I run a / zfs mirror and one day > I could no longer boot and saw the dread 'insufficient replicas'. I > eventually got it when disk started to work again briefly then did a > snapshot/send offsite, redid system with new install & disk then restored > data. The export/import shouldn't hurt, I used that when booting off an > MFSBSD cd and imported the zpool to send from there. Perhaps you might want > to consider RAIDZ2 with all those disks. > > -- > Adam Vande More >
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