Date: Tue, 12 Aug 2014 11:23:12 -0400 From: "Mike." <the.lists@mgm51.com> To: freebsd-questions@FreeBSD.org Subject: Re: zpool from 32bit os to 64bit os Message-ID: <201408121123120262.00AFDB15@smtp.24cl.home> In-Reply-To: <D6AFB1BF-46D9-4BED-B407-97BE614417C5@kraus-haus.org> References: <53E92013.2020206@chroot.pl> <FF8E51982DE10ACDF7ED1C5A@192.168.1.50> <CALfReye9HDGyTWSGkR_BJmss_n%2BXX0UPacuK9L7pLR9K2-MAoA@mail.gmail.com> <53E9C0D0.1080206@chroot.pl> <D6AFB1BF-46D9-4BED-B407-97BE614417C5@kraus-haus.org>
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On 8/12/2014 at 9:43 AM Paul Kraus wrote: |On Aug 12, 2014, at 3:22, Lukasz <lukasz@chroot.pl> wrote: | |> Thank you for answers. I'll try with export/import... I hope my data |> will be safe during this operation. :) | |If you want your data to be really, really safe, then: 0. Make at least one backup of the data before doing anything else, and make sure the backup worked. | |1. Make sure to export from the original server. While you *can* force the |import on the new server, I really, really hate using the force option as |the check you are overriding is there for a reason. Sometimes you don=92t |have a choice, but this is not a Disaster Recovery situation (and you do |not want it to become one). | |2. When you run the initial `zpool import` on the new system it will list |the zpools it finds *and* their state. If the zpool is not complete or is |any way not clean, then DO NOT IMPORT it and put the drives back in the |old system and figure out what is wrong there. | |3. When you run the `zpool import <zpool name || ID>` also set the |readonly property using the -o option. This way if there is some kind of |incompatibility (and ZFS does check for this and should want you, but it |never really hurts to be paranoid) the new system will not write anything |to the zpool. | |4. If the readonly import goes well and all the data is there and looks |good, then export the zpool and import it again without the readonly |property and you should be all set. | |The above may be overkill (depending on what your data is worth :-), but I |have seen bugs in ZFS (although not very many in the past few years, I=92ve |been using ZFS since about 2007) and the additional time can save you lots |of time in recovery later on. | |-- |Paul Kraus |paul@kraus-haus.org | |_______________________________________________ |freebsd-questions@freebsd.org mailing list |http://lists.freebsd.org/mailman/listinfo/freebsd-questions |To unsubscribe, send any mail to |"freebsd-questions-unsubscribe@freebsd.org" =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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