Re: Naming inconsistency for serial device on sparc
Hello! On 4/14/19 11:13 PM, David Miller wrote: >>> It's probably been there for so long that changing it is likely to >>> have a risk of breaking some other piece of software. >> >> Hmm, good point. We could maybe change it in the Debian kernel for testing >> purposes and see if anything breaks for our users. >> >> I'll report back. > > That would cover Debian, but what about other distros whose components > are looking for the "wrong" name? I have talked with the Gentoo SPARC people on #gentoo-sparc OFTC now and then don't have a particularly strong on opinion on the subject, so I think it should be safe to fix the inconsistency bug in the driver. Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaub...@debian.org `. `' Freie Universitaet Berlin - glaub...@physik.fu-berlin.de `-GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
Re: Naming inconsistency for serial device on sparc
From: John Paul Adrian Glaubitz Date: Sun, 14 Apr 2019 22:25:57 +0200 > On 4/14/19 10:18 PM, David Miller wrote: >> From: John Paul Adrian Glaubitz >> Date: Sun, 14 Apr 2019 09:21:32 +0200 >> >>> Is there any particular reason this device name mismatch exists or >>> is it just a bug we can fix? >> >> It's probably been there for so long that changing it is likely to >> have a risk of breaking some other piece of software. > > Hmm, good point. We could maybe change it in the Debian kernel for testing > purposes and see if anything breaks for our users. > > I'll report back. That would cover Debian, but what about other distros whose components are looking for the "wrong" name?
Re: Naming inconsistency for serial device on sparc
On 4/14/19 11:13 PM, David Miller wrote: >> Hmm, good point. We could maybe change it in the Debian kernel for testing >> purposes and see if anything breaks for our users. >> >> I'll report back. > > That would cover Debian, but what about other distros whose components > are looking for the "wrong" name? I'm not aware of any actively maintained sparc(64) Linux distributions besides Debian and Gentoo and I know the folks from the latter, so I could ask them for their opinion as well. Oracle unfortunately stopped development of Oracle Linux for SPARC. Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaub...@debian.org `. `' Freie Universitaet Berlin - glaub...@physik.fu-berlin.de `-GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
Re: Naming inconsistency for serial device on sparc
From: John Paul Adrian Glaubitz Date: Sun, 14 Apr 2019 09:21:32 +0200 > Is there any particular reason this device name mismatch exists or > is it just a bug we can fix? It's probably been there for so long that changing it is likely to have a risk of breaking some other piece of software.
Re: Naming inconsistency for serial device on sparc
On 4/14/19 10:18 PM, David Miller wrote: > From: John Paul Adrian Glaubitz > Date: Sun, 14 Apr 2019 09:21:32 +0200 > >> Is there any particular reason this device name mismatch exists or >> is it just a bug we can fix? > > It's probably been there for so long that changing it is likely to > have a risk of breaking some other piece of software. Hmm, good point. We could maybe change it in the Debian kernel for testing purposes and see if anything breaks for our users. I'll report back. Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaub...@debian.org `. `' Freie Universitaet Berlin - glaub...@physik.fu-berlin.de `-GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
Naming inconsistency for serial device on sparc
Hello! We recently ran into a regression in the debian-installer on sparc64 which made the serial console unusable during installation. It turned out that the regression was introduced by a change in the rootskel package [1] and the problem is that "steal-tty" is not able to find the active serial console and pick it up for the installer. After looking at the code changes, we found out that the problem is that in the sparc64 kernel, the device names for the serial console in /proc/consoles does not match the one under /sys: root@landau:~# cat /proc/consoles ttyHV0 -W- (EC p )4:64 tty0 -WU (E )4:1 root@landau:~# root@landau:~# readlink /sys/dev/char/4:64 ../../devices/root/f0299a70/f029b788/tty/ttyS0 root@landau:~# Thus, any software reading /proc/consoles will not be able to figure out what the name of the serial device is. Is there any particular reason this device name mismatch exists or is it just a bug we can fix? Thanks, Adrian > [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=926539 > [2] > https://salsa.debian.org/installer-team/rootskel/commit/b6048aafed7d73ba42da04d6f7a798710f271384#11da32c570b25101c7d830e4fd6c254c323cddc8_21_16 -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaub...@debian.org `. `' Freie Universitaet Berlin - glaub...@physik.fu-berlin.de `-GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
