Date: Thu, 20 Sep 2018 14:05:46 +0100 From: David Chisnall <theraven@freebsd.org> To: Alexander Leidinger <Alexander@leidinger.net>, freebsd-fs@freebsd.org Subject: Re: Fixing vdev name Message-ID: <58e2716e-5221-c529-d270-ba4e3b322fac@theravensnest.org> In-Reply-To: <fe377835-a45a-22e1-e80e-bf4d1e87664b@theravensnest.org> References: <fe377835-a45a-22e1-e80e-bf4d1e87664b@theravensnest.org>
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[ Please keep me in the cc line - I'm not subscribed to this list ] >> Hello the list, >> >> I have a VM that uses ZFS with a pair of striped devices. The first >> is a partition on the root disk, created by the installer. When >> this was too small, I added another device (da1) and told the pool >> to expand to use it (no redundancy, because the underlying storage >> for the VM images provides that). After a reboot, I can no longer >> boot the system. Booting from the install CD and attempting to >> import the pool, it correctly identifies da0p4 as one of the >> devices, but gives me a long number instead of da1. > > This means ZFS doesn't see the other device (or more correctly no > device with the ZFS meta-data on the device which matches what the > pool wants to see as the second vdev). So there's been some corruption to the disk? > Do you see the second disk from non-ZFS tools? geom lists da1 as a device of the correct type, but zdb doesn't find any labels for it. > Does the partition info > look OK there (if you partitioned it before giving it to ZFS)? I dind't partition it, I just assigned the whole thing to ZFS. > Does the geometry/size look correct? Yup, in geom list it all looks sensible. > >> How do I fix this so that the pool again points to da1? > > As a side note, it doesn't matter if it is da1 or something else (e.g. > /dev/gpt/<volid> or whatever), as long as it is a geom provider > instead of the uuid of the device like it seems to be the case right > now. So does this mean that something on the (virtual) disk was corrupted (sufficiently to remove both copies of the label and the uberblock)? David
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