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Re: [PATCH] zfs: fix LINUX_ROOT_DEVICE when grub-probe fails

From: Daniel Kiper
Subject: Re: [PATCH] zfs: fix LINUX_ROOT_DEVICE when grub-probe fails
Date: Fri, 18 Dec 2020 14:38:33 +0100
User-agent: NeoMutt/20170113 (1.7.2)

On Thu, Dec 17, 2020 at 08:27:14PM -0600, Doug Goldstein wrote:
> When grub-probe fails, the current code is to just stuff an empty result
> in which causes the user to not knowingly have a system that no longer
> boots. grub-probe can fail because the ZFS pool that contains the root
> filesystem might have features that grub does not yet support which is a
> common configuration for people with a rpool and a bpool. This behavior
> uses the zdb utility to dump the same value as the filesystem label
> would print.
> Signed-off-by: Doug Goldstein <>

Reviewed-by: Daniel Kiper <>


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