Date: Wed, 23 Apr 2014 07:19:44 -0700 From: Gennadiy Gulchin <ggulchin@icloud.com> To: Jordan Hubbard <jkh@mail.turbofuzz.com> Cc: "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org> Subject: Re: ZFS unable to import pool Message-ID: <FC0D5991-8F8D-41D5-BB50-AB840C29F362@icloud.com> In-Reply-To: <888649C4-CC66-48A6-9901-BEA93D1BBFA3@mail.turbofuzz.com> References: <B493BD80-CDC2-4BA6-AC14-AE16B373A051@icloud.com> <20140423064203.GD2830@sludge.elizium.za.net> <B1024D84-EBBE-4A9B-82C4-5C19B5A66B60@icloud.com> <20140423080056.GE2830@sludge.elizium.za.net> <20140423091852.GH2830@sludge.elizium.za.net> <20140423100126.GJ2830@sludge.elizium.za.net> <5357937D.4080302@gmail.com> <72E79259-3DB1-48B7-8E5E-19CC2145A464@icloud.com> <888649C4-CC66-48A6-9901-BEA93D1BBFA3@mail.turbofuzz.com>
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Any data can be salvaged? --Gena > On Apr 23, 2014, at 7:15 AM, Jordan Hubbard <jkh@mail.turbofuzz.com> wrote: > > If you added a single disk to a pool, you have no choice but to destroy the pool and start over. The single disk will essentially degrade the performance of the whole pool, because it represents a unique (100Mb/sec, typical) transaction group now, and if you lose that one disk you will also lose the entire pool since it has no redundancy. > > This is a common mistake people make with ZFS, and it sucks, but block pointer rewrite was never implemented so that’s just the way it is, too. That’s another reason for FreeBSD-based front-ends to ZFS like FreeNAS. The GUI adds some seat-belts to prevent users from trivially doing things like that. On the command line, all bets are off. > > - Jordan > >> On Apr 23, 2014, at 7:09 PM, Gena Guchin <ggulchin@icloud.com> wrote: >> >> Looking though the history, i DID add that disk ada7 (!) to the pool, but I added it as a separate disk. I wanted to re-add the disk to the storage pool, but it added as a new disk… >> this does help a lille.. >> >> >> anything I can do now? >> can I remove that vdev? >
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