Re: journal replay at each boot problematic?

[Kai Krakow <hurikhan77@gmail.com>]

Am Mon, 27 Mar 2017 13:33:57 +0200
schrieb Clemens Eisserer <linuxhippy@gmail.com>:

> Hi,
> 
> I am using bcache in writeback-mode for a very slow (~100kb/s write
> speed) backing device.
> 
> At each boot I see messages like the following:
> > bcache: bch_journal_replay() journal replay done, 2297 keys in 86
> > entries, seq 71136  
> 
> Are these messages indicating an unclean shutdown / some kind of
> rollback operation - or is it part of "normal" bcache initialization?

As far as the docs tell, bcache is designed to shut down unclean. So
this is expected behavior in write-back mode.

To cleanly detach a bcache, you would need to first put it in
write-through or write-around mode and wait for write-back to finish.
In turn, this mode should also avoid these messages at boot.

-- 
Regards,
Kai

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