Hi,

Op 28/01/14 14:56 schreef Thierry De Leeuw [off-list ref]:

The documentation at
http://evilpiepirate.org/git/linux-bcache.git/plain/Documentation/bcache.t
xt?h=bcache-dev 
explains how to do it.

Look at the "Getting started" and "ATTACHING" section.

Bottom line to create one cache (sdc) and 2 backing (sda and sdb)
devices, use

make-bcache -B /dev/sda /dev/sdb -C /dev/sdc

And (from the same documentation) if you¹ve created (make-bcache) and
registered the caching and backing devices separately, you can attach them
like this:

echo <CSET-UUID> > /sys/block/bcache0/bcache/attach

echo <CSET-UUID> > /sys/block/bcache1/bcache/attach


Assuming that /dev/sda and /dev/sdb have shown up as /dev/bcache0 and
/dev/bcache1 as their bcached counterparts after registering, and
<CSET-UUID> being the UUID of the cache device to be found in
/sys/fs/bcache.

Rolf

Best regards

Thierry


On 01/28/2014 01:31 PM, Vasiliy Tolstov wrote:

quoted

2014-01-28 Rolf Fokkens[off-list ref]

quoted

Op 27/01/14 21:38 schreef Patrick Zwahlen[off-list ref]:

quoted

My understanding is that a single "cacheset" (in your case, your SSD)
can
be
shared between multiple backing devices.

You should be able to attach a single cacheset's UUID to multiple
devices.

Can anyone else confirm ?

Yep, confirmed!

Rolf

Can you explain for me how can i do that?

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