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From: Coly Li <colyli@suse.de>
To: Rolf Fokkens <rolf@rolffokkens.nl>, linux-bcache@vger.kernel.org
Subject: Re: bch_cached_dev_attach() The obsoleted large bucket layout is unsupported, set the bcache device into read-only
Date: Sun, 7 Feb 2021 23:29:34 +0800	[thread overview]
Message-ID: <7049b813-df93-45ee-dfc3-93ab68065f18@suse.de> (raw)
In-Reply-To: <96e89237-8abe-adf7-8cf0-7065cde81dc3@rolffokkens.nl>

On 2/6/21 7:49 PM, Rolf Fokkens wrote:
> Hi all,
> 
> Apparently some bcache users are hit by the message in the subject, see
> https://bugzilla.redhat.com/show_bug.cgi?id=1922485
> 
> I personally cannot reproduce this, but if the provided info is correct,
> a certain kernel upgrade will break existing bcache setups. Is this
> really true?
> 
> If so, this is a breaking change, which is very harmful.
> 
> I hope some of you have suggestions for the people who apparently are
> impacted by this.

This is a regression and fixed in 5.11-rc6 by commit 0df28cad06eb
("bcache: only check feature sets when sb->version >=
BCACHE_SB_VERSION_CDEV_WITH_FEATURES").

Also the fix has been in stable kernels already last week. The fix
should go into distribution very soon IMHO.

Thanks.

Coly Li

      reply	other threads:[~2021-02-07 15:30 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-06 11:49 bch_cached_dev_attach() The obsoleted large bucket layout is unsupported, set the bcache device into read-only Rolf Fokkens
2021-02-07 15:29 ` Coly Li [this message]

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