[zfs-discuss] cannot import 'home': I/O error Destroy and re-create the pool from a backup source

Raghuram Devarakonda draghuram at gmail.com
Wed Apr 25 09:27:23 EDT 2018

Hi Anton,

I recognize the message:

"spa_load_failed(): spa_load(home, config untrusted): FAILED: no valid
uberblock found"

I got exact same one in my case as well but it did turn out that data
was indeed corrupt on the device (backed by my own driver). Also, I
wasn't using RAID-Z.

Did you try Jeff's suggestion of importing with older TXNs?

Good luck,

On Wed, Apr 25, 2018 at 6:59 AM, Anton Gubar'kov via zfs-discuss
<zfs-discuss at list.zfsonlinux.org> wrote:
> I'm also following
> http://list.zfsonlinux.org/pipermail/zfs-discuss/2018-April/030934.html for
> a person with similar problems. So I've built the driver and userland tools
> from the branch https://github.com/zfsonlinux/zfs/pull/7459 , set
> zfs_dbgmsg=1 and tried to import my pool with txg from several snapshots I
> have.
> I attach the output from /proc/spl/kstat/zfs/dbgmsg. I don't know enough to
> decipher it and I ask for your help.
> KR
> Anton.
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