From: Martin McClure <martin.mcclure@gemtalksystems.com>
To: Kent Overstreet <kent.overstreet@gmail.com>
Cc: linux-bcache@vger.kernel.org
Subject: Re: bcachefs with cache device and backing device
Date: Tue, 17 May 2016 19:46:33 -0700 [thread overview]
Message-ID: <573BD789.9030406@gemtalksystems.com> (raw)
In-Reply-To: <20160513043603.GA1407@kmo-pixel>
On 05/12/2016 09:36 PM, Kent Overstreet wrote:
>
> Yeah - tiering replaces cache/backing devices
>
> IIRC,
>
> bcache format --tier 0 -C <SSD> --tier 1 -C <spinning rust>
>
> (the -C is going to go away at some point)
>
Had a chance to play with this some more, but still not getting it to
work...
Formatting seems to work, and once I do this:
echo /dev/sdd1 > /sys/fs/bcache/register
echo /dev/nvme0n1 > /sys/fs/bcache/register
echo 1 > /sys/fs/bcache/<set-uuid>/blockdev_volume_create
a /dev/bcache0 has been created. However, if I try to mount it:
mount -t bcache /dev/bcache0 /mnt
it says:
mount: No such file or directory
with a return code of 32, which is documented as "mount failure".
At this point I reach the limit of my current understanding, but would
like to understand more.
Thanks,
-Martin
next prev parent reply other threads:[~2016-05-18 2:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-13 1:50 bcachefs with cache device and backing device Martin McClure
2016-05-13 4:36 ` Kent Overstreet
2016-05-13 4:37 ` Martin McClure
2016-05-18 2:46 ` Martin McClure [this message]
2016-05-18 4:01 ` Kent Overstreet
2016-05-18 5:06 ` Christopher James Halse Rogers
2016-05-18 5:41 ` Kent Overstreet
2016-05-20 0:41 ` Martin McClure
2016-05-20 0:44 ` Christopher James Halse Rogers
2016-05-20 1:18 ` Martin McClure
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