* bch_cached_dev_attach() The obsoleted large bucket layout is unsupported, set the bcache device into read-only
@ 2021-02-06 11:49 Rolf Fokkens
2021-02-07 15:29 ` Coly Li
0 siblings, 1 reply; 2+ messages in thread
From: Rolf Fokkens @ 2021-02-06 11:49 UTC (permalink / raw)
To: linux-bcache
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.
Best,
Rolf Fokkens
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: bch_cached_dev_attach() The obsoleted large bucket layout is unsupported, set the bcache device into read-only
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
0 siblings, 0 replies; 2+ messages in thread
From: Coly Li @ 2021-02-07 15:29 UTC (permalink / raw)
To: Rolf Fokkens, linux-bcache
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
^ permalink raw reply [flat|nested] 2+ messages in thread
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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
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