* devfs -> udev transition: vcsN are not created
@ 2004-08-25 12:17 Denis Vlasenko
2004-08-25 19:43 ` Greg KH
2004-08-27 9:48 ` Denis Vlasenko
0 siblings, 2 replies; 6+ messages in thread
From: Denis Vlasenko @ 2004-08-25 12:17 UTC (permalink / raw)
To: Greg KH; +Cc: linux-kernel
[-- Attachment #1: Type: text/plain, Size: 4475 bytes --]
I am migrating my 2.6 systems from devfs to udev.
Versions:
# uname -a
Linux firebird 2.6.7-bk20 #6 Mon Jul 12 01:23:31 EEST 2004 i686 unknown
# ls -d udev* hotplug*
hotplug-2004_04_01 udev-030
In early boot, when root fs is readonly yet, I start udev this way:
mount -t ramfs none /dev
env - udevd & sleep 1
udevstart
and then continue as normal. Things mostly work.
However, I noticed that vcsN device nodes are missing
(I tried to start Midnight Commander and it failed).
This can be due to the fact that I start agettys very
late in boot sequence, and thus all ttyN's were not
open at the time of udevstart, only first one was (tty1).
I logged in and did:
# ls -l /udev >before
# strace -o us.log udevstart
# ls -l /udev >after
# diff -u before after >diff
This worked, vcsN's appeared:
--- before Wed Aug 25 14:52:42 2004
+++ after Wed Aug 25 14:53:10 2004
@@ -1,4 +1,6 @@
total 0
+crw------- 1 root root 10, 175 Aug 25 14:53 agpgart
+lrwxrwxrwx 1 root root 3 Aug 25 14:53 cdrom -> hdb
crw------- 1 root root 5, 1 Aug 25 2004 console
brw------- 1 root root 2, 0 Aug 25 2004 fd0
crw------- 1 root root 1, 7 Aug 25 2004 full
@@ -10,6 +12,7 @@
brw------- 1 root root 3, 4 Aug 25 2004 hda4
brw------- 1 root root 3, 64 Aug 25 2004 hdb
crw------- 1 root root 10, 183 Aug 25 2004 hw_random
+drwxr-xr-x 2 root root 0 Aug 25 14:53 input
crw------- 1 root root 1, 2 Aug 25 2004 kmem
crw------- 1 root root 1, 11 Aug 25 2004 kmsg
srw-rw-rw- 1 root root 0 Aug 25 14:52 log
@@ -52,7 +55,7 @@
crw------- 1 root root 4, 1 Aug 25 2004 tty1
crw------- 1 root root 4, 10 Aug 25 2004 tty10
crw------- 1 root root 4, 11 Aug 25 14:52 tty11
-crw------- 1 root root 4, 12 Aug 25 14:52 tty12
+crw------- 1 root root 4, 12 Aug 25 14:53 tty12
crw------- 1 root root 4, 13 Aug 25 2004 tty13
crw------- 1 root root 4, 14 Aug 25 2004 tty14
crw------- 1 root root 4, 15 Aug 25 2004 tty15
@@ -60,7 +63,7 @@
crw------- 1 root root 4, 17 Aug 25 2004 tty17
crw------- 1 root root 4, 18 Aug 25 2004 tty18
crw------- 1 root root 4, 19 Aug 25 2004 tty19
-crw--w---- 1 root tty 4, 2 Aug 25 14:52 tty2
+crw------- 1 root tty 4, 2 Aug 25 14:53 tty2
crw------- 1 root root 4, 20 Aug 25 2004 tty20
crw------- 1 root root 4, 21 Aug 25 2004 tty21
crw------- 1 root root 4, 22 Aug 25 2004 tty22
@@ -163,6 +166,24 @@
crw------- 1 root root 1, 9 Aug 25 2004 urandom
crw------- 1 root root 7, 0 Aug 25 2004 vcs
crw------- 1 root root 7, 1 Aug 25 2004 vcs1
+crw------- 1 root root 7, 11 Aug 25 14:53 vcs11
+crw------- 1 root root 7, 12 Aug 25 14:53 vcs12
+crw------- 1 root root 7, 2 Aug 25 14:53 vcs2
+crw------- 1 root root 7, 3 Aug 25 14:53 vcs3
+crw------- 1 root root 7, 4 Aug 25 14:53 vcs4
+crw------- 1 root root 7, 5 Aug 25 14:53 vcs5
+crw------- 1 root root 7, 6 Aug 25 14:53 vcs6
+crw------- 1 root root 7, 7 Aug 25 14:53 vcs7
+crw------- 1 root root 7, 8 Aug 25 14:53 vcs8
crw------- 1 root root 7, 128 Aug 25 2004 vcsa
crw------- 1 root root 7, 129 Aug 25 2004 vcsa1
+crw------- 1 root root 7, 139 Aug 25 14:53 vcsa11
+crw------- 1 root root 7, 140 Aug 25 14:53 vcsa12
+crw------- 1 root root 7, 130 Aug 25 14:53 vcsa2
+crw------- 1 root root 7, 131 Aug 25 14:53 vcsa3
+crw------- 1 root root 7, 132 Aug 25 14:53 vcsa4
+crw------- 1 root root 7, 133 Aug 25 14:53 vcsa5
+crw------- 1 root root 7, 134 Aug 25 14:53 vcsa6
+crw------- 1 root root 7, 135 Aug 25 14:53 vcsa7
+crw------- 1 root root 7, 136 Aug 25 14:53 vcsa8
crw------- 1 root root 1, 5 Aug 25 2004 zero
Strace and syslog are in attached tarball.
PS. Also mouse doesn't paste in console, but let's handle
it one at a time.
--
vda
[-- Attachment #2: info.tar.bz2 --]
[-- Type: application/x-tbz, Size: 12908 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: devfs -> udev transition: vcsN are not created
2004-08-25 12:17 devfs -> udev transition: vcsN are not created Denis Vlasenko
@ 2004-08-25 19:43 ` Greg KH
2004-08-25 20:06 ` Denis Vlasenko
2004-08-27 9:48 ` Denis Vlasenko
1 sibling, 1 reply; 6+ messages in thread
From: Greg KH @ 2004-08-25 19:43 UTC (permalink / raw)
To: Denis Vlasenko; +Cc: linux-kernel
On Wed, Aug 25, 2004 at 03:17:31PM +0300, Denis Vlasenko wrote:
> I am migrating my 2.6 systems from devfs to udev.
> Versions:
>
> # uname -a
> Linux firebird 2.6.7-bk20 #6 Mon Jul 12 01:23:31 EEST 2004 i686 unknown
Can you try the latest -mm tree? It should have this fixed. I'll be
sending the patch that does this off to Linus later today.
thanks,
greg k-h
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: devfs -> udev transition: vcsN are not created
2004-08-25 19:43 ` Greg KH
@ 2004-08-25 20:06 ` Denis Vlasenko
0 siblings, 0 replies; 6+ messages in thread
From: Denis Vlasenko @ 2004-08-25 20:06 UTC (permalink / raw)
To: Greg KH; +Cc: linux-kernel
On Wednesday 25 August 2004 22:43, Greg KH wrote:
> On Wed, Aug 25, 2004 at 03:17:31PM +0300, Denis Vlasenko wrote:
> > I am migrating my 2.6 systems from devfs to udev.
> > Versions:
> >
> > # uname -a
> > Linux firebird 2.6.7-bk20 #6 Mon Jul 12 01:23:31 EEST 2004 i686 unknown
>
> Can you try the latest -mm tree? It should have this fixed. I'll be
> sending the patch that does this off to Linus later today.
Hopefully tomorrow.
--
vda
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: devfs -> udev transition: vcsN are not created
2004-08-25 12:17 devfs -> udev transition: vcsN are not created Denis Vlasenko
2004-08-25 19:43 ` Greg KH
@ 2004-08-27 9:48 ` Denis Vlasenko
2004-08-27 10:46 ` Denis Vlasenko
2004-09-05 8:02 ` Greg KH
1 sibling, 2 replies; 6+ messages in thread
From: Denis Vlasenko @ 2004-08-27 9:48 UTC (permalink / raw)
To: Greg KH; +Cc: linux-kernel
Hi Greg,
On Wednesday 25 August 2004 15:17, Denis Vlasenko wrote:
> I am migrating my 2.6 systems from devfs to udev.
> Versions:
>
> # uname -a
> Linux firebird 2.6.7-bk20 #6 Mon Jul 12 01:23:31 EEST 2004 i686 unknown
> # ls -d udev* hotplug*
> hotplug-2004_04_01 udev-030
>
> In early boot, when root fs is readonly yet, I start udev this way:
>
> mount -t ramfs none /dev
> env - udevd & sleep 1
> udevstart
>
> and then continue as normal. Things mostly work.
> However, I noticed that vcsN device nodes are missing
> (I tried to start Midnight Commander and it failed).
> This can be due to the fact that I start agettys very
> late in boot sequence, and thus all ttyN's were not
> open at the time of udevstart, only first one was (tty1).
>
> I logged in and did:
>
> # ls -l /udev >before
> # strace -o us.log udevstart
> # ls -l /udev >after
> # diff -u before after >diff
>
> This worked, vcsN's appeared:
[snip]
As you suggested, I tried 2.6.9-rc1-mm1. Sorry. It does not work.
My hotplug is instrumented a bit
to log invocations to syslog. I did 'cat >/dev/tty13':
hotplug[1196]: cmd: /sbin/hotplug vc
hotplug[1196]: env: DEVPATH=/class/vc/vcs13 PATH=/sbin:/bin:/usr/sbin:/usr/bin
ACTION=add PWD=/ SHLVL=1 HOME=/ SEQNUM=232 _=/sbin/env
hotplug[1198]: cmd: /sbin/hotplug vc
hotplug[1198]: env: DEVPATH=/class/vc/vcsa13 PATH=/sbin:/bin:/usr/sbin:/usr/bin
ACTION=add PWD=/ SHLVL=1 HOME=/ SEQNUM=233 _=/sbin/env
hotplug[1198]: run: /etc/hotplug.d/default/default.hotplug vc
hotplug[1196]: run: /etc/hotplug.d/default/default.hotplug vc
hotplug[1196]: run: /etc/hotplug.d/default/udev.hotplug vc
hotplug[1198]: run: /etc/hotplug.d/default/udev.hotplug vc
/dev/vcs[a]13 did NOT appear.
I waited ~15 secs and ^C'ed cat:
hotplug[1233]: cmd: /sbin/hotplug vc
hotplug[1233]: env: DEVPATH=/class/vc/vcs13 PATH=/sbin:/bin:/usr/sbin:/usr/bin
ACTION=remove PWD=/ SHLVL=1 HOME=/ SEQNUM=234 _=/sbin/env
hotplug[1235]: cmd: /sbin/hotplug vc
hotplug[1235]: env: DEVPATH=/class/vc/vcsa13 PATH=/sbin:/bin:/usr/sbin:/usr/bin
ACTION=remove PWD=/ SHLVL=1 HOME=/ SEQNUM=235 _=/sbin/env
hotplug[1233]: run: /etc/hotplug.d/default/default.hotplug vc
hotplug[1235]: run: /etc/hotplug.d/default/default.hotplug vc
hotplug[1235]: run: /etc/hotplug.d/default/udev.hotplug vc
hotplug[1233]: run: /etc/hotplug.d/default/udev.hotplug vc
I verified that I do run udevsend:
# ls -l /etc/hotplug.d/default/udev.hotplug
lrwxrwxrwx 1 root root 48 Aug 25 10:53 /etc/hotplug.d/default/udev.hotplug -> /app/udev-030/etc/hotplug.d/default/udev.hotplug
# ls -l /app/udev-030/etc/hotplug.d/default/udev.hotplug
lrwxrwxrwx 1 root root 14 Jul 27 15:35 /app/udev-030/etc/hotplug.d/default/udev.hotplug -> /sbin/udevsend
# ls -l /sbin/udevsend
lrwxrwxrwx 1 root root 27 Aug 25 10:53 /sbin/udevsend -> /app/udev-030/sbin/udevsend
# ls -l /app/udev-030/sbin/udevsend
-rwxr-xr-x 1 root root 6696 Aug 25 10:53 /app/udev-030/sbin/udevsend
Symlink forest may look strange to you, but actually works.
I replaced /app/udev-030/sbin/udevsend with sh script doing
'echo "I AM HERE" | logger' and I do see it in syslog.
I conclude udevsend is being run, but doesn't do it's magic.
--
vda
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: devfs -> udev transition: vcsN are not created
2004-08-27 9:48 ` Denis Vlasenko
@ 2004-08-27 10:46 ` Denis Vlasenko
2004-09-05 8:02 ` Greg KH
1 sibling, 0 replies; 6+ messages in thread
From: Denis Vlasenko @ 2004-08-27 10:46 UTC (permalink / raw)
To: Greg KH; +Cc: linux-kernel
> As you suggested, I tried 2.6.9-rc1-mm1. Sorry. It does not work.
>
> My hotplug is instrumented a bit
> to log invocations to syslog. I did 'cat >/dev/tty13':
>
> hotplug[1196]: cmd: /sbin/hotplug vc
> hotplug[1196]: env: DEVPATH=/class/vc/vcs13
> PATH=/sbin:/bin:/usr/sbin:/usr/bin ACTION=add PWD=/ SHLVL=1 HOME=/
> SEQNUM=232 _=/sbin/env
> hotplug[1198]: cmd: /sbin/hotplug vc
> hotplug[1198]: env: DEVPATH=/class/vc/vcsa13
> PATH=/sbin:/bin:/usr/sbin:/usr/bin ACTION=add PWD=/ SHLVL=1 HOME=/
> SEQNUM=233 _=/sbin/env
> hotplug[1198]: run: /etc/hotplug.d/default/default.hotplug vc
> hotplug[1196]: run: /etc/hotplug.d/default/default.hotplug vc
> hotplug[1196]: run: /etc/hotplug.d/default/udev.hotplug vc
> hotplug[1198]: run: /etc/hotplug.d/default/udev.hotplug vc
>
> /dev/vcs[a]13 did NOT appear.
> I waited ~15 secs and ^C'ed cat:
>
> hotplug[1233]: cmd: /sbin/hotplug vc
> hotplug[1233]: env: DEVPATH=/class/vc/vcs13
> PATH=/sbin:/bin:/usr/sbin:/usr/bin ACTION=remove PWD=/ SHLVL=1 HOME=/
> SEQNUM=234 _=/sbin/env
> hotplug[1235]: cmd: /sbin/hotplug vc
> hotplug[1235]: env: DEVPATH=/class/vc/vcsa13
> PATH=/sbin:/bin:/usr/sbin:/usr/bin ACTION=remove PWD=/ SHLVL=1 HOME=/
> SEQNUM=235 _=/sbin/env
> hotplug[1233]: run: /etc/hotplug.d/default/default.hotplug vc
> hotplug[1235]: run: /etc/hotplug.d/default/default.hotplug vc
> hotplug[1235]: run: /etc/hotplug.d/default/udev.hotplug vc
> hotplug[1233]: run: /etc/hotplug.d/default/udev.hotplug vc
>
> I verified that I do run udevsend:
>
> # ls -l /etc/hotplug.d/default/udev.hotplug
> lrwxrwxrwx 1 root root 48 Aug 25 10:53
> /etc/hotplug.d/default/udev.hotplug ->
> /app/udev-030/etc/hotplug.d/default/udev.hotplug
>
> # ls -l /app/udev-030/etc/hotplug.d/default/udev.hotplug
> lrwxrwxrwx 1 root root 14 Jul 27 15:35
> /app/udev-030/etc/hotplug.d/default/udev.hotplug -> /sbin/udevsend
>
> # ls -l /sbin/udevsend
> lrwxrwxrwx 1 root root 27 Aug 25 10:53 /sbin/udevsend ->
> /app/udev-030/sbin/udevsend
>
> # ls -l /app/udev-030/sbin/udevsend
> -rwxr-xr-x 1 root root 6696 Aug 25 10:53
> /app/udev-030/sbin/udevsend
>
> Symlink forest may look strange to you, but actually works.
>
> I replaced /app/udev-030/sbin/udevsend with sh script doing
> 'echo "I AM HERE" | logger' and I do see it in syslog.
> I conclude udevsend is being run, but doesn't do it's magic.
I straced udevsend invocation by
#!/bin/sh
exec </dev/null
exec >/dev/null
exec 2>/dev/null
strace -o /tmp/udevsend-$$ /app/udev-030/sbin/udevsend "$@"
It looks very strange:
execve("/app/udev-030/sbin/udevsend", ["/app/udev-030/sbin/udevsend", "vc"], [/* 8 vars */]) = 0
uname({sys="Linux", node="firebird", ...}) = 0
brk(0) = 0x804b000
open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 0
fstat64(0, {st_mode=S_IFREG|0644, st_size=48875, ...}) = 0
mmap2(NULL, 48875, PROT_READ, MAP_PRIVATE, 0, 0) = 0xb7fe2000
close(0) = 0
open("/lib/libc.so.6", O_RDONLY) = 0
read(0, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0000\\\1"..., 1024) = 1024
fstat64(0, {st_mode=S_IFREG|0755, st_size=29126107, ...}) = 0
mmap2(NULL, 1168804, PROT_READ|PROT_EXEC, MAP_PRIVATE, 0, 0) = 0xb7ec4000
mprotect(0xb7fda000, 30116, PROT_NONE) = 0
mmap2(0xb7fda000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 0, 0x116) = 0xb7fda000
mmap2(0xb7fdf000, 9636, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fdf000
close(0) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7ec3000
munmap(0xb7fe2000, 48875) = 0
getpid() = 13020
socket(PF_UNIX, SOCK_DGRAM, 0) = 0
sendto(0, "udevd_030\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 356, 0, {sin_family=AF_UNIX, path=@udevd}, 8) = 356
close(0) = 0
semget(IPC_PRIVATE, 3086872064, 0
This is all. No segfault.
I am puzzled 8|
--
vda
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: devfs -> udev transition: vcsN are not created
2004-08-27 9:48 ` Denis Vlasenko
2004-08-27 10:46 ` Denis Vlasenko
@ 2004-09-05 8:02 ` Greg KH
1 sibling, 0 replies; 6+ messages in thread
From: Greg KH @ 2004-09-05 8:02 UTC (permalink / raw)
To: Denis Vlasenko; +Cc: linux-kernel
On Fri, Aug 27, 2004 at 12:48:59PM +0300, Denis Vlasenko wrote:
> Hi Greg,
>
> On Wednesday 25 August 2004 15:17, Denis Vlasenko wrote:
> > I am migrating my 2.6 systems from devfs to udev.
> > Versions:
> >
> > # uname -a
> > Linux firebird 2.6.7-bk20 #6 Mon Jul 12 01:23:31 EEST 2004 i686 unknown
> > # ls -d udev* hotplug*
> > hotplug-2004_04_01 udev-030
> >
> > In early boot, when root fs is readonly yet, I start udev this way:
> >
> > mount -t ramfs none /dev
> > env - udevd & sleep 1
> > udevstart
> >
> > and then continue as normal. Things mostly work.
> > However, I noticed that vcsN device nodes are missing
> > (I tried to start Midnight Commander and it failed).
> > This can be due to the fact that I start agettys very
> > late in boot sequence, and thus all ttyN's were not
> > open at the time of udevstart, only first one was (tty1).
> >
> > I logged in and did:
> >
> > # ls -l /udev >before
> > # strace -o us.log udevstart
> > # ls -l /udev >after
> > # diff -u before after >diff
> >
> > This worked, vcsN's appeared:
> [snip]
>
> As you suggested, I tried 2.6.9-rc1-mm1. Sorry. It does not work.
>
> My hotplug is instrumented a bit
> to log invocations to syslog. I did 'cat >/dev/tty13':
>
> hotplug[1196]: cmd: /sbin/hotplug vc
> hotplug[1196]: env: DEVPATH=/class/vc/vcs13 PATH=/sbin:/bin:/usr/sbin:/usr/bin
> ACTION=add PWD=/ SHLVL=1 HOME=/ SEQNUM=232 _=/sbin/env
> hotplug[1198]: cmd: /sbin/hotplug vc
> hotplug[1198]: env: DEVPATH=/class/vc/vcsa13 PATH=/sbin:/bin:/usr/sbin:/usr/bin
> ACTION=add PWD=/ SHLVL=1 HOME=/ SEQNUM=233 _=/sbin/env
> hotplug[1198]: run: /etc/hotplug.d/default/default.hotplug vc
> hotplug[1196]: run: /etc/hotplug.d/default/default.hotplug vc
> hotplug[1196]: run: /etc/hotplug.d/default/udev.hotplug vc
> hotplug[1198]: run: /etc/hotplug.d/default/udev.hotplug vc
>
> /dev/vcs[a]13 did NOT appear.
> I waited ~15 secs and ^C'ed cat:
Hm, this works for me.
What does /sys/class/vc/ contain? Any "vcs" files there? If not,
that's the issue.
thanks,
greg k-h
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2004-09-06 3:00 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2004-08-25 12:17 devfs -> udev transition: vcsN are not created Denis Vlasenko
2004-08-25 19:43 ` Greg KH
2004-08-25 20:06 ` Denis Vlasenko
2004-08-27 9:48 ` Denis Vlasenko
2004-08-27 10:46 ` Denis Vlasenko
2004-09-05 8:02 ` Greg KH
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