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SubjectRe: strange delays on console logouts (tty != 1)
On Sat, May 01, 2004 at 03:20:40PM -0700, Chris Wedgwood wrote:
> On Fri, Apr 30, 2004 at 09:53:51PM +0200, Jorge Bernal wrote:
> or perhaps try something like (not actually tested in this form):
>
> for i in `seq 1 1000` ; do \
> echo before > /dev/tty7 ; \
> strace -ttogetty-trace.$i getty 38400 tty7 linux ; \
> echo after > /dev/tty7 ; \
> done
>

[02:11]~$ logout
after
before
after
before

Debian GNU/Linux testing/unstable tuxland.amedias.org tty9

tuxland.amedias.org login: koke
Password:
Last login: Sun May 2 02:11:06 2004 on tty9
Linux tuxland.amedias.org 2.6.5 #2 Sun Apr 11 14:20:11 CEST 2004 i686
GNU/Linux
No mail.

[02:11]~$ logout
after
before
after
before
after
before
after
before
after
before
after
before
after
before

...
And after 8 after/befores, the login appears again. The delay is after
the "before".

In the strace logs I can see a lot of alarms() and read(3,...). Note: fd
3 corresponds to /var/run/utmp

A bit of the log
02:11:08.850311 alarm(1) = 0
02:11:08.850345 fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET,
start=0, len=0}) = 0
02:11:08.850386 read(3,
"\7\0\0\0\7\2\0\0tty9\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) = 384
02:11:08.850442 fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET,
start=0, len=0}) = 0

> Please let me know what getty (version, etc) you are using and what
> distro and other relevant things as it might be a bug specific to some
> distro's and not others as few people have reported this.
>

I don't know where to look at the getty version, but I'm using Debian
Sid with util-linux=2.12-6 (the package which contains getty)

Something curious: I have just discovered that:
tuxland:~/gettylog# ps aux | grep tty9
root 998 0.0 0.1 2080 712 tty4 R 02:25 0:00 grep tty9
tuxland:~/gettylog# last | head
koke tty9 Sun May 2 02:24 gone - no logout
koke tty9 Sun May 2 02:11 - 02:24 (00:12)
[...]

>
>
> Thanks,
>
> --cw
>

--
"Sólo el éxito diferencia al genio del loco"

Blog: http://www.amedias.org/koke
Web Personal: http://sindominio.net/~koke/
JID: koke@zgzjabber.ath.cx
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