aims team mailing list archive

[David Henningsson <1289730@xxxxxxxxxxxxxxxxxx>]

The 90-alsa-restore.rules udev rule is primarily meant to handle hotplugging,
but sometimes it is also run before /usr is mounted,
and alsactl restore depends on /usr/share/alsa being present.

If /usr/share/alsa is not present, we're so early in the boot
process that alsa-restore.service (or upstart equivalent) will
run later on.

BugLink: https://bugs.launchpad.net/bugs/1289730
Signed-off-by: David Henningsson <david.henningsson@xxxxxxxxxxxxx>
---

I'm not really sure of all quirks in the boot process, and I haven't tested the
patch either, hence the RFC above. Do you think it makes sense? Should we also
add @sbindir@ to the things to test for?

 alsactl/90-alsa-restore.rules.in | 2 +-
 alsactl/Makefile.am              | 1 +
 configure.ac                     | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/alsactl/90-alsa-restore.rules.in b/alsactl/90-alsa-restore.rules.in
index c68119d..c83c6b5 100644
--- a/alsactl/90-alsa-restore.rules.in
+++ b/alsactl/90-alsa-restore.rules.in
@@ -1,4 +1,4 @@
-ACTION=="add", SUBSYSTEM=="sound", KERNEL=="controlC*", KERNELS!="card*", GOTO="alsa_restore_go"
+ACTION=="add", SUBSYSTEM=="sound", KERNEL=="controlC*", KERNELS!="card*", TEST=="@datadir@", GOTO="alsa_restore_go"
 GOTO="alsa_restore_end"
 
 LABEL="alsa_restore_go"
diff --git a/alsactl/Makefile.am b/alsactl/Makefile.am
index b862412..afbedb3 100644
--- a/alsactl/Makefile.am
+++ b/alsactl/Makefile.am
@@ -44,6 +44,7 @@ endif
 
 edit = \
 	$(SED) -r -e 's,@sbindir\@,$(sbindir),g' \
+		  -e 's,@datadir\@,$(mydatadir),g' \
 		  -e 's,@daemonswitch\@,$(ALSACTL_DAEMONSWITCH),g' \
 							< $< > $@ || rm $@
 
diff --git a/configure.ac b/configure.ac
index 7e6894a..a4d2db3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -292,6 +292,7 @@ AC_DEFINE_UNQUOTED(SOUNDSDIR, "$soundsdir", [directory containing sample data])
 
 mydatadir="$dir/alsa"
 AC_DEFINE_UNQUOTED(DATADIR, "$mydatadir", [directory containing alsa configuration])
+AC_SUBST(mydatadir)
 
 AC_ARG_WITH(testsound,
   AS_HELP_STRING([--with-testsound=file], [give the path of test sound file for alsaconf]),
-- 
1.9.1

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https://bugs.launchpad.net/bugs/1289730

Title:
  systemd-udev fails to execute alsactl during start-up if /usr and/or
  /var are separate volumes

Status in “alsa-utils” package in Ubuntu:
  Incomplete

Bug description:
  During system startup systemd-udev will print the following error
  messages:

  [   15.089778] systemd-udevd[683]: failed to execute '/usr/sbin/alsactl' '/usr/sbin/alsactl -E HOME=/var/run/alsa restore 0': No such file or directory
  [   15.090130] systemd-udevd[684]: failed to execute '/usr/sbin/alsactl' '/usr/sbin/alsactl -E HOME=/var/run/alsa restore 1': No such file or directory

  alsactl is present:

  $ which alsactl
  /usr/sbin/alsactl

  but on a separate partition:
  $ df -h /usr/sbin/alsactl 
  Dateisystem            Größe Benutzt Verf. Verw% Eingehängt auf
  /dev/mapper/scaleo-usr   12G    6,6G  4,1G   62% /usr

  $ df -h /var
  Dateisystem            Größe Benutzt Verf. Verw% Eingehängt auf
  /dev/mapper/scaleo-var  7,3G    2,5G  4,4G   37% /var

  This suggests that systemd-udev is called before all local partitions
  have been mounted.

  $ lsb_release -rd
  Description:	Ubuntu Trusty Tahr (development branch)
  Release:	14.04

  $ apt-cache policy udev
  udev:
    Installiert:           204-5ubuntu13
    Installationskandidat: 204-5ubuntu13
    Versionstabelle:
   *** 204-5ubuntu13 0
          500 http://de.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status

  Kind regards,
    Dominik

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