From: Thomas Huth <huth@tuxfamily.org>
To: virtualization@lists.linux-foundation.org
Cc: Ganis Zulfa Santoso <ganis.zulfa@gmail.com>
Subject: Re: I can read/write in virtio BLK Device, but I can't run a hello world program in it
Date: Tue, 7 Jul 2015 08:55:04 +0200 [thread overview]
Message-ID: <20150707085504.11d15a8b@thh440s> (raw)
In-Reply-To: <C03726BC-3011-4295-9ED6-EF31E98EE7BD@gmail.com>
On Tue, 7 Jul 2015 10:52:01 +0900
Ganis Zulfa Santoso <ganis.zulfa@gmail.com> wrote:
> Hi Linux Virtualization Mailing List Members,
>
> I am trying to develop a driver for virtio blk device in guest.
Why don't you simply use the driver that is already available in the
kernel?
> I can safely mount the virtual blk device with: mount /dev/vda /mnt/
> in /mnt/ I can read & write the device. But when I run a simple hello world program in /mnt/root/, this error happens:
Have you already verified that you can successfully read the _right_
data from your block device? I.e. something like
mount /dev/xxx /mnt
cp helloworld_static /mnt/root/helloworld_static
umount /mnt # just to make sure that it is not cached
mount /dev/xxx /mnt
md5sum helloworld_static
md5sum /mnt/root/helloworld_static
... and then compare the two md5sums whether they are the same?
Thomas
next prev parent reply other threads:[~2015-07-07 6:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-07 1:52 I can read/write in virtio BLK Device, but I can't run a hello world program in it Ganis Zulfa Santoso
2015-07-07 6:55 ` Thomas Huth [this message]
2015-07-07 7:33 ` Ganis Zulfa Santoso
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