Bug#1102248: [kernel] support of EDAC (Error Detection And Correction)

[Salvatore Bonaccorso <carnil@debian.org>]

HI Jean-Marc,,

On Sun, Apr 06, 2025 at 09:16:55PM +0200, Jean-Marc LACROIX wrote:
> Le 06/04/2025 à 21:10, Salvatore Bonaccorso a écrit :
> > Control: tags -1 + moreinfo
> > 
> > On Sun, Apr 06, 2025 at 07:25:04PM +0200, Jean-Marc LACROIX wrote:
> > > Package: linux-image-amd64
> > > Version: 6.1.129-1
> > > Severity: wishlist
> > > 
> > > Dear kernel support team,
> > > 
> > > Could you please set CONFIG_EDAC_DEBUG (Error Detection And Correction) in
> > > kernel generation, so that it is possible to use ECC RAM when building NAS
> > > target with ZFS ?
> > > 
> > > 
> > > ansible@hn-asusgl752-400:~$ uname -a
> > > Linux hn-asusgl752-400 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian
> > > 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
> > > 
> > > 
> > > ansible@hn-asusgl752-400:~$ grep CONFIG_EDAC_DEBUG
> > > /boot/config-6.1.0-32-amd64
> > > # CONFIG_EDAC_DEBUG is not set
> > 
> > Why would that be needed for building NAS target with ZFS?
> > 
> > The config option clearly describes:
> > 
> > config EDAC_DEBUG
> >          bool "Debugging"
> >          select DEBUG_FS
> >          help
> >            This turns on debugging information for the entire EDAC subsystem.
> >            You do so by inserting edac_module with "edac_debug_level=x." Valid
> >            levels are 0-4 (from low to high) and by default it is set to 2.
> >            Usually you should select 'N' here.
> > 
> > Can you elaborate on why CONFIG_EDAC_DEBUG is needed?
> > 
> > Regards,
> > Salvatore
> 
> It seems the this module is not available on standard Debian product
> 
> ansible@hn-asusgl752-400:~$ find /lib/modules/6.1.0-* -name edac_module
> ansible@hn-asusgl752-400:~$

That does not really answer my question ;-)

Again, CONFIG_EDA_DEBUG is debugging module, and I was wondering why
it is needed for working with NAS targets with ZFS. Can you elaborate?

Regards,
Salvatore