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Date: Fri, 15 Mar 2024 09:57:34 +0100
From: Martin Steigerwald <martin@...htvoll.de>
To: linux-bcachefs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
 linux-kernel@...r.kernel.org, Kent Overstreet <kent.overstreet@...ux.dev>
Subject:
 Re: bcachefs: do not run 6.7: upgrade to 6.8 immediately if you have a multi
 device fs

Hi Kent, hi.

Kent Overstreet - 15.03.24, 05:41:09 CET:
> there's a bug in 6.7 with filesystems that are mid upgrade and then get
> downgraded not getting marked in the superblock as downgraded, and this
> translates to a really horrific bug in splitbrain detection when the old
> version isn't updating member sequence nmubers and you go back to the
> new version - this results in every device being kicked out of the fs.

I take it that single device BCacheFS filesystems can be upgraded just fine?

I can also recreate and repopulate once I upgraded to 6.8. Still waiting a 
bit.

Best.
-- 
Martin



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