Thread (28 messages) 28 messages, 7 authors, 2019-03-03

Re: [RFC PATCH v2 1/9] block: add nr_mirrors to request_queue

From: "Theodore Y. Ts'o" <tytso@mit.edu>
Date: 2019-02-13 16:05:02
Also in: linux-fsdevel, linux-xfs

On Wed, Feb 13, 2019 at 05:50:36PM +0800, Bob Liu wrote:
@nr_mirrors is 1 by default which means only one copy, drivers e.g raid1 are
responsible for setting the right value. The maximum value is
BITS_PER_LONG which is 32 or 64. That should be big enough else retry lantency
may be too high.
This is admittedly bike-shedding, so feel free to ignore, but...

In the case of Raid 6, "mirrors" will be a bit of a misnomer.  Would
"nr_recovery" be better?

Thanks for working on this!!  I would be interested in using this for
ext4 once it's available.

				- Ted
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