/dev/sda disappearing with SYFS_DEPRECATED?

/dev/sda disappearing with SYFS_DEPRECATED?

[Norbert Preining]

Hi all,

(please Cc)

I just changed my kernel config slightly to activate some DEPRECATED
configs and alas, the change was interesting, suddenly there
was no /dev/sda shown anymore.

Userspace remain completely the same (debian/sid up2date).

The only changes I made in the .config file was:
-# CONFIG_SYSFS_DEPRECATED is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y

-CONFIG_NFSD_DEPRECATED=y
+# CONFIG_NFSD_DEPRECATED is not set

and this made the /dev/sda* entries disappear.

Is that to be expected?

Best wishes

Norbert
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Norbert Preining            preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan                                 TeX Live & Debian Developer
DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
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Re: /dev/sda disappearing with SYFS_DEPRECATED?

[Paul Mundt]

On Tue, Nov 16, 2010 at 02:20:27PM +0900, Norbert Preining wrote:
> I just changed my kernel config slightly to activate some DEPRECATED
> configs and alas, the change was interesting, suddenly there
> was no /dev/sda shown anymore.
> 
> Userspace remain completely the same (debian/sid up2date).
> 
> The only changes I made in the .config file was:
> -# CONFIG_SYSFS_DEPRECATED is not set
> +CONFIG_SYSFS_DEPRECATED=y
> +CONFIG_SYSFS_DEPRECATED_V2=y
> 
> -CONFIG_NFSD_DEPRECATED=y
> +# CONFIG_NFSD_DEPRECATED is not set
> 
> and this made the /dev/sda* entries disappear.
> 
> Is that to be expected?
> 
Yes. Newer tools are incompatible with these settings, as noted in the
Kconfig help for these entries:

config SYSFS_DEPRECATED

	...

          Recent distributions and userspace tools after 2009/2010 depend on
          the existence of /sys/class/block/, and will not work with this
          option enabled.

SYSFS_DEPRECATED_V2 just forces this behaviour on.

Re: /dev/sda disappearing with SYFS_DEPRECATED?

[Norbert Preining]

On Di, 16 Nov 2010, Paul Mundt wrote:
> Yes. Newer tools are incompatible with these settings, as noted in the
> Kconfig help for these entries:

Ouch, sorry, yes... didn't read that. I read only the short desc and hoped
that it might fix the input layer problem introduced in 2.6.37-rc, not 
giving me brightness events.

Thanks.

Best wishes

Norbert
------------------------------------------------------------------------
Norbert Preining            preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan                                 TeX Live & Debian Developer
DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
------------------------------------------------------------------------
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