linux-kernel - nbd: on-the-fly resize does not work any more

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Message-ID: <20180218180744.GC28602@gmail.com>
Date:   Sun, 18 Feb 2018 20:07:45 +0200
From:   Mykola Golub <to.my.trociny@...il.com>
To:     Josef Bacik <jbacik@...com>, Jens Axboe <axboe@...nel.dk>
Cc:     Jason Dillaman <jdillama@...hat.com>, linux-kernel@...r.kernel.org,
        ceph-devel@...r.kernel.org
Subject: nbd: on-the-fly resize does not work any more

Hi,

It looks like after the recent changes to nbd driver, on-the-fly
resize has stopped working for rbd-nbd. Particularly this change [1]
breaks how NBD_SET_SIZE is used for rbd-nbd on-the-fly resize [2].

Could this be fixed?

[1] https://github.com/torvalds/linux/commit/639812a1ed9bf49ae2c026086fbf975339cd1eef
[2] https://github.com/ceph/ceph/blob/483f14c/src/tools/rbd_nbd/rbd-nbd.cc#L488

-- 
Mykola Golub