Re: [Nbd] Problems creating new device files
- To: nbd-general@lists.sourceforge.net
- Subject: Re: [Nbd] Problems creating new device files
- From: Nicolas Trangez <nicolas@...1262...>
- Date: Mon, 04 Mar 2013 14:33:36 +0100
- Message-id: <1362404016.30259.1.camel@...1263...>
- In-reply-to: <CAN6BF2+xoAs=4hy1=JQnCgvC=Zxj=fvnCdmnfCCoA1gpJsFGuQ@...18...>
- References: <CAN6BF2Jxb_XcKr7USjo_cetf3qmD1-K_gasyOsq4vuU2+KrAMQ@...18...> <CAECXXi4UuC3pigM2R1xNiExMWLv3G4q0oO1S=8nWXP_Xb7BBog@...18...> <CAN6BF2+xoAs=4hy1=JQnCgvC=Zxj=fvnCdmnfCCoA1gpJsFGuQ@...18...>
On Mon, 2013-03-04 at 21:24 +0800, Daniele Testa wrote:
> Ok, but that is how it currently looks like:
>
> root@...1278...:/dev# ls -al|grep nbd
> brw-rw---- 1 root disk 43, 0 2013-03-02 17:04 nbd0
> brw-rw---- 1 root disk 43, 16 2013-03-02 17:15 nbd1
> brw-rw---- 1 root disk 43, 160 2013-03-02 17:04 nbd10
> brw-rw---- 1 root disk 43, 176 2013-03-02 17:04 nbd11
> brw-rw---- 1 root disk 43, 192 2013-03-02 17:04 nbd12
> brw-rw---- 1 root disk 43, 208 2013-03-02 17:04 nbd13
> brw-rw---- 1 root disk 43, 224 2013-03-02 17:04 nbd14
> brw-rw---- 1 root disk 43, 240 2013-03-02 17:04 nbd15
> brw-rw---- 1 root disk 43, 32 2013-03-02 17:16 nbd2
> brw-rw---- 1 root disk 43, 48 2013-03-02 17:04 nbd3
> brw-rw---- 1 root disk 43, 64 2013-03-02 17:04 nbd4
> brw-rw---- 1 root disk 43, 80 2013-03-02 17:04 nbd5
> brw-rw---- 1 root disk 43, 96 2013-03-02 17:04 nbd6
> brw-rw---- 1 root disk 43, 112 2013-03-02 17:04 nbd7
> brw-rw---- 1 root disk 43, 128 2013-03-02 17:04 nbd8
> brw-rw---- 1 root disk 43, 144 2013-03-02 17:04 nbd9
>
> The device files created by the installation skips 16 minors. Shouldn't I
> do the same if I create more files?
> Could you please give me an example how to add more device files than the
> 16 ones already there?
I didn't test, but
$ modinfo nbd
filename: /lib/modules/3.6.10-4.fc18.x86_64/kernel/drivers/block/nbd.ko
license: GPL
description: Network Block Device
depends:
intree: Y
vermagic: 3.6.10-4.fc18.x86_64 SMP mod_unload
parm: nbds_max:number of network block devices to initialize
(default: 16) (int)
parm: max_part:number of partitions per device (default: 0)
(int)
parm: debugflags:flags for controlling debug output (int)
rings a bell.
Nicolas
>
> Regards,
> Daniele
>
>
> 2013/3/4 Paul Clements <paul.clements@...856...>
>
> > On Sun, Mar 3, 2013 at 3:05 AM, Daniele Testa <daniele.testa@...17...>
> > wrote:
> > > I am trying to create new devices files, i.e /dev/nbdXX but I'm having
> > > problems.
> > >
> > > (root@...1277...)-(/dev)# mknod /dev/nbd32 b 43 512
> > >
> > > (root@...1277...)-(/dev)# nbd-client example.com 10002 /dev/nbd32
> >
> > You should only skip minors if you have partitioning support
> > (max_part) enabled in nbd. Otherwise, nbd devices use consecutive
> > minor numbers.
> >
> > --
> > Paul
> >
> Ok, but that is how it currently looks like:
>
>
> root@...1278...:/dev# ls -al|grep nbd
> brw-rw---- 1 root disk 43, 0 2013-03-02 17:04 nbd0
> brw-rw---- 1 root disk 43, 16 2013-03-02 17:15 nbd1
> brw-rw---- 1 root disk 43, 160 2013-03-02 17:04 nbd10
> brw-rw---- 1 root disk 43, 176 2013-03-02 17:04 nbd11
> brw-rw---- 1 root disk 43, 192 2013-03-02 17:04 nbd12
> brw-rw---- 1 root disk 43, 208 2013-03-02 17:04 nbd13
> brw-rw---- 1 root disk 43, 224 2013-03-02 17:04 nbd14
> brw-rw---- 1 root disk 43, 240 2013-03-02 17:04 nbd15
> brw-rw---- 1 root disk 43, 32 2013-03-02 17:16 nbd2
> brw-rw---- 1 root disk 43, 48 2013-03-02 17:04 nbd3
> brw-rw---- 1 root disk 43, 64 2013-03-02 17:04 nbd4
> brw-rw---- 1 root disk 43, 80 2013-03-02 17:04 nbd5
> brw-rw---- 1 root disk 43, 96 2013-03-02 17:04 nbd6
> brw-rw---- 1 root disk 43, 112 2013-03-02 17:04 nbd7
> brw-rw---- 1 root disk 43, 128 2013-03-02 17:04 nbd8
> brw-rw---- 1 root disk 43, 144 2013-03-02 17:04 nbd9
>
>
> The device files created by the installation skips 16 minors.
> Shouldn't I do the same if I create more files?
> Could you please give me an example how to add more device files than
> the 16 ones already there?
>
>
> Regards,
> Daniele
>
>
> 2013/3/4 Paul Clements <paul.clements@...856...>
> On Sun, Mar 3, 2013 at 3:05 AM, Daniele Testa
> <daniele.testa@...17...> wrote:
> > I am trying to create new devices files, i.e /dev/nbdXX but
> I'm having
> > problems.
> >
> > (root@...1277...)-(/dev)# mknod /dev/nbd32 b 43 512
> >
> > (root@...1277...)-(/dev)# nbd-client example.com 10002 /dev/nbd32
>
> You should only skip minors if you have partitioning support
> (max_part) enabled in nbd. Otherwise, nbd devices use
> consecutive
> minor numbers.
>
> --
> Paul
>
>
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