Date: Sun, 16 Oct 2016 13:45:27 +0100 From: Matthew Seaman <matthew@FreeBSD.org> To: freebsd-questions@freebsd.org Subject: Re: Help finding out find why a ZFS pool vanished. Message-ID: <0b913867-fd96-521d-7981-da7485fd2230@FreeBSD.org> In-Reply-To: <CAHtBMo6bL=_Eqejx_thFCg1u9ONWnqX30RAbWaLQYGiQD2dgEw@mail.gmail.com> References: <CAHtBMo6bL=_Eqejx_thFCg1u9ONWnqX30RAbWaLQYGiQD2dgEw@mail.gmail.com>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --CFnm6pRafGjcfNFuUn4vuagiBt1GddrqS Content-Type: multipart/mixed; boundary="hJTh4vbD0TFllfuTOUlmpsIJFFJcdIw18"; protected-headers="v1" From: Matthew Seaman <matthew@FreeBSD.org> To: freebsd-questions@freebsd.org Message-ID: <0b913867-fd96-521d-7981-da7485fd2230@FreeBSD.org> Subject: Re: Help finding out find why a ZFS pool vanished. References: <CAHtBMo6bL=_Eqejx_thFCg1u9ONWnqX30RAbWaLQYGiQD2dgEw@mail.gmail.com> In-Reply-To: <CAHtBMo6bL=_Eqejx_thFCg1u9ONWnqX30RAbWaLQYGiQD2dgEw@mail.gmail.com> --hJTh4vbD0TFllfuTOUlmpsIJFFJcdIw18 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 16/10/2016 01:56, Greg Marsh wrote: > A couple days ago, when trying to copy my desktop files to my backup > system, I got NFS mount errors. I was quite sore & tired from work (aft= er > 25 years of sysadmining, I'm now doing home renovations), so I went wit= h > the Windows admin response of 'reboot everything', on both my desktop a= nd > server. Then when trying to remount the NFS shares from my FreeBSD syst= em > didn't work, I df'd on my FreeBSD server to find the /storage pool was = not > there. >=20 > I was eventually able to get my storage pool back through 'zpool import= > -af' Have you examined the log from the zpool that mysteriously vanished? # zpool history -il poolname This will record every zfs(8) or zpool(8) command affecting the pool. You should also examine any command histories you have for actions affecting /boot/zfs/zpool.cache -- while the system nowadays will generally be able to find your boot pool without this, it may not be able to find /other/ pools. Lots of recipes for manual intervention with ZFS systems rely on manipulating this file, but they frequently do not warn against /removing/ the working copy before rebooting, something that tends to catch out the tidier amongst us. Cheers, Matthew --hJTh4vbD0TFllfuTOUlmpsIJFFJcdIw18-- --CFnm6pRafGjcfNFuUn4vuagiBt1GddrqS Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQJ8BAEBCgBmBQJYA3ZtXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ2NTNBNjhCOTEzQTRFNkNGM0UxRTEzMjZC QjIzQUY1MThFMUE0MDEzAAoJELsjr1GOGkATzLIP/jzfc5Rsgv7mHc3cRaLGr+XI 1M/zewgHAhScUZC3HKehyA0N8Hgo2SjerodU4ZfCfkkr23TVuseaq9dpTtdjgDFT 25jM0Lor7AQna9J0fdMds6Nhy3NnFS3Bq/ICREn3EQXPkrZRPA7YwkdthTfnFgTK 8tcR6EweDGqogvDla3/s/4jAl4TXLAiTQGapWf43vOgcba+5k7DNGkrJcpknIS8M d9zb1/QKvMmwYU+GJ7FRMVtXNYt5Kob2x9ECeev4LBemek+FO2fiKE9IKI/hYHMu xpAp8FWVQx8ImL5lW2BT60ffereZQjo2WDv34214T8V4HqdmwQn5rFX4fmP7uOXP Kk87E9xZ/ZTszjg8RmyRbQrYw1skCQxlebeUB5qOyFDbfT69lZiPJetToa9MmsRQ o4emuCubxCFtk5T0nPT+yrVP2PlvXncHyB9tpJoUcgjlu4JXK74qOdQT6rl9LTN0 T5uJLQBp2NNAU/rueSnzNtDe/eAVE3qoL3S3HlAe5VUKJPqvSauJoFsS0ABAjjeY JjsKmvzZP6fpPTboq++evJZXO+oUQhkKtnaMSqoJ01lG43ycDMdK+XjoZ7zVvzTc VVGLv4sRrbIQWHi+hGnpkrLgYD55HFKsQvhQRhYCQqRwDJfzmfpZ/OZ6PJcwpIqs Gm2BkB8La94sae9L1T+A =x/dL -----END PGP SIGNATURE----- --CFnm6pRafGjcfNFuUn4vuagiBt1GddrqS--
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