From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vivek Goyal Subject: [PATCH] virtio-blk: Call revalidate_disk() upon online disk resize Date: Wed, 28 Mar 2012 16:32:00 -0400 Message-ID: <20120328203200.GE3376@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Christoph Hellwig , Rusty Russell , Jens Axboe , Amit Shah , Moyer Jeff Moyer To: linux kernel mailing list , kvm@vger.kernel.org Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org If a virtio disk is open in guest and a disk resize operation is done, (virsh blockresize), new size is not visible to tools like "fdisk -l". This seems to be happening as we update only part->nr_sects and not bdev->bd_inode size. Call revalidate_disk() which should take care of it. I tested growing disk size of already open disk and it works for me. Signed-off-by: Vivek Goyal --- drivers/block/virtio_blk.c | 1 + 1 file changed, 1 insertion(+) Index: linux-2.6/drivers/block/virtio_blk.c =================================================================== --- linux-2.6.orig/drivers/block/virtio_blk.c 2012-03-27 17:05:07.000000000 -0400 +++ linux-2.6/drivers/block/virtio_blk.c 2012-03-28 15:55:03.943462782 -0400 @@ -351,6 +351,7 @@ static void virtblk_config_changed_work( cap_str_10, cap_str_2); set_capacity(vblk->disk, capacity); + revalidate_disk(vblk->disk); done: mutex_unlock(&vblk->config_lock); }