Hey Jörn,
On Tue, Jul 24, 2012 at 10:28:20PM +0200, Borislav Petkov wrote:
> Ok, thanks for taking the time to explain this - very interesting
> stuff.
>
> So, as far as I'm concerned blockconsole is ready for shipping! 8-)
you're probably very busy so I'll be quick: I still think that
blockconso
On Wednesday 2012-07-18 20:53, Jörn Engel wrote:
>
>> With the include added, it builds fine. Then I took an usb stick and I
>> did:
>>
>> $ ./mkblockconsole /dev/sdc
>>
>>
>
>You can also run hdparm -z instead.
We have too many ways of doing some things.
util-linux conveniently has `blockdev
On Wed, 25 July 2012 09:17:09 +0100, Tvrtko Ursulin wrote:
>
> As far as I know there is nothing like netpoll in the block layer so it has
> to
> be a lot less reliable than netconsole. Especially with delaying write out to
> a workqueue. Anyway, I am not arguing, just saying in my opinion thos
On Tuesday 24 Jul 2012 15:38:22 Jörn Engel wrote:
> On Tue, 24 July 2012 09:01:16 +0100, Tvrtko Ursulin wrote:
> > On Monday 23 Jul 2012 21:02:30 Jörn Engel wrote:
> > > On Mon, 23 July 2012 15:33:16 +0100, Tvrtko Ursulin wrote:
> > > > On Thursday 12 Jul 2012 18:46:34 Jörn Engel wrote:
> > At the
On Tue, Jul 24, 2012 at 01:52:32PM -0400, Jörn Engel wrote:
> On Tue, 24 July 2012 18:25:47 +0200, Borislav Petkov wrote:
> > > The advantage should be better robustness, in particular when dealing
> > > with cheap flash devices.
> >
> > In the sense that we flush the current sector after one seco
On Tue, 24 July 2012 18:25:47 +0200, Borislav Petkov wrote:
> > The advantage should be better robustness, in particular when dealing
> > with cheap flash devices.
>
> In the sense that we flush the current sector after one second the
> latest so that we can lose as small amount of data as possibl
On Tue, Jul 24, 2012 at 10:53:35AM -0400, Jörn Engel wrote:
> On Tue, 24 July 2012 17:42:19 +0200, Borislav Petkov wrote:
> >
> > Just a minor nuisance: I have this in the log:
> >
> > ...
> > [ 10.498422] console [bcon0] enabled
> > [ 10.499899] blockconsole: now logging to /dev/sdc at 1
> >
On Tue, 24 July 2012 17:42:19 +0200, Borislav Petkov wrote:
>
> Just a minor nuisance: I have this in the log:
>
> ...
> [ 10.498422] console [bcon0] enabled
> [ 10.499899] blockconsole: now logging to /dev/sdc at 1
> [ 10.594791] usb 5-2: new full-speed USB device number 3 using ohci_hcd
>
On Tue, 24 July 2012 09:01:16 +0100, Tvrtko Ursulin wrote:
> On Monday 23 Jul 2012 21:02:30 Jörn Engel wrote:
> > On Mon, 23 July 2012 15:33:16 +0100, Tvrtko Ursulin wrote:
> > > On Thursday 12 Jul 2012 18:46:34 Jörn Engel wrote:
>
> At the very least block console does not work from interrupt con
On Mon, Jul 23, 2012 at 04:04:59PM -0400, Jörn Engel wrote:
> On Wed, 18 July 2012 23:45:21 +0200, Borislav Petkov wrote:
> >
> > Something like the above, just slap it at the beginning of
> > Documentation/block/blockconsole.txt for impatient people like me and
> > that's it :-).
>
> And below i
On Monday 23 Jul 2012 21:02:30 Jörn Engel wrote:
> On Mon, 23 July 2012 15:33:16 +0100, Tvrtko Ursulin wrote:
> > On Thursday 12 Jul 2012 18:46:34 Jörn Engel wrote:
> > > Console driver similar to netconsole, except it writes to a block
> > > device. Can be useful in a setup where netconsole, for
On Wed, 18 July 2012 23:45:21 +0200, Borislav Petkov wrote:
>
> Something like the above, just slap it at the beginning of
> Documentation/block/blockconsole.txt for impatient people like me and
> that's it :-).
And below is an updated patch with your changes folded in. I did a
few minor tweaks,
On Mon, 23 July 2012 15:33:16 +0100, Tvrtko Ursulin wrote:
> On Thursday 12 Jul 2012 18:46:34 Jörn Engel wrote:
> > Console driver similar to netconsole, except it writes to a block
> > device. Can be useful in a setup where netconsole, for whatever
> > reasons, is impractical.
>
> Perhaps you ne
Hi,
On Thursday 12 Jul 2012 18:46:34 Jörn Engel wrote:
> Console driver similar to netconsole, except it writes to a block
> device. Can be useful in a setup where netconsole, for whatever
> reasons, is impractical.
Perhaps you need to add a word or two about limitations compared to netconsole
On Wed, Jul 18, 2012 at 05:08:15PM -0400, Jörn Engel wrote:
> On Wed, 18 July 2012 23:45:21 +0200, Borislav Petkov wrote:
> >
> > > > So why is that first megabyte full of zeros there?
> > >
> > > It gives you some scratch space to store information in.
> >
> > How? By me writing something in th
On Wed, 18 July 2012 23:45:21 +0200, Borislav Petkov wrote:
>
> > > So why is that first megabyte full of zeros there?
> >
> > It gives you some scratch space to store information in.
>
> How? By me writing something in that empty line in vim? Or something
> else storing stuff there?
Assuming y
On Wed, Jul 18, 2012 at 02:53:35PM -0400, Jörn Engel wrote:
[ … ]
> > $ ./mkblockconsole /dev/sdc
> >
> >
>
> You can also run hdparm -z instead. Or replug the device. Main
> danger of hdparm is that running the command twice will cause two
> instances of blockconsole to use the same device
On Mon, 16 July 2012 14:46:15 +0200, Borislav Petkov wrote:
> On Fri, Jul 13, 2012 at 12:20:09PM -0400, Jörn Engel wrote:
>
> > +CANDIDATES=`lsscsi |sed 's|.*/dev|/dev|'`
>
> You probably want to check lsscsi presence on the system, wasn't
> installed by default on my debian testing image, for ex
On Fri, Jul 13, 2012 at 12:20:09PM -0400, Jörn Engel wrote:
[ … ]
> diff --git a/Documentation/block/blockconsole/bcon_tail
> b/Documentation/block/blockconsole/bcon_tail
> new file mode 100755
> index 000..950bfd1
> --- /dev/null
> +++ b/Documentation/block/blockconsole/bcon_tail
> @@ -0,0
On Fri, Jul 13, 2012 at 12:20:09PM -0400, Jörn Engel wrote:
> > > Logging to partitions is not supported.
> >
> > That could be useful though. We have a setup here where we create a
> > partition on the block device and install the OS there for testing
> > purposes while leaving room on the device
On Fri, 13 July 2012 15:03:38 +0200, Borislav Petkov wrote:
> On Thu, Jul 12, 2012 at 01:46:34PM -0400, Jörn Engel wrote:
> > +
> > +It can currently only be used built-in.
>
> If so, you need to change the tristate in Kconfig below to bool.
Fair point, fixed.
> > Logging to partitions is not su
On Thu, Jul 12, 2012 at 01:46:34PM -0400, Jörn Engel wrote:
> Console driver similar to netconsole, except it writes to a block
> device. Can be useful in a setup where netconsole, for whatever
> reasons, is impractical.
>
> Changes since version 1.0:
> - Header format overhaul, addressing severa
Console driver similar to netconsole, except it writes to a block
device. Can be useful in a setup where netconsole, for whatever
reasons, is impractical.
Changes since version 1.0:
- Header format overhaul, addressing several annoyances when actually
using blockconsole for production.
- Steve
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