mountmedia slow down considerably the preseed

[Daniel Dehennin]

Including http://hands.com/d-i/ on a server ISO result in loading preseed very slow because of mount attempt of unpartitionneda and unformated disk /dev/vda

There is a 5 second pause on each failing mediamount call:

Apr 29 09:35:14 debconf: --> GET preseed/early_command
Apr 29 09:35:14 debconf: <-- 0 log-output -t early_script sh /tmp/classes_scripts_runner early 'Preseed Early' 'early'
Apr 29 09:35:14 preseed: running preseed command preseed/early_command: log-output -t early_script sh /tmp/classes_scripts_runner early 'Preseed Early' 'early'
Apr 29 09:35:14 early_script: debug: Running...
Apr 29 09:35:14 debconf: --> GET dbg/flags
Apr 29 09:35:14 debconf: <-- 10 dbg/flags doesn't exist
Apr 29 09:35:14 debconf: --> GET dbg/pauses
Apr 29 09:35:14 debconf: <-- 0 classes
Apr 29 09:35:14 debconf: --> REGISTER hands-off/meta/text hands-off/title
Apr 29 09:35:14 debconf: <-- 0
Apr 29 09:35:14 debconf: --> REGISTER hands-off/meta/text hands-off/item
Apr 29 09:35:14 debconf: <-- 0
Apr 29 09:35:14 debconf: --> SUBST hands-off/title DESC Preseed early_script(s)
Apr 29 09:35:14 debconf: Adding [DESC] -> [Preseed early_script(s)]
Apr 29 09:35:14 debconf: <-- 0
Apr 29 09:35:14 debconf: --> GET auto-install/classes
Apr 29 09:35:14 debconf: <-- 0 net;partition/base;partition/regular;partition/auto;net/dhcp;partition/home;partition/lvm;mimuntu;mimuntu/trusty;loc/fr_FR
Apr 29 09:35:14 debconf: --> PROGRESS START 0 11 hands-off/title
Apr 29 09:35:14 debconf: <-- 0 OK
Apr 29 09:35:14 debconf: --> SUBST hands-off/item DESC Running top level Preseed Early script
Apr 29 09:35:14 debconf: Adding [DESC] -> [Running top level Preseed Early script]
Apr 29 09:35:14 debconf: <-- 0
Apr 29 09:35:14 debconf: --> PROGRESS INFO hands-off/item
Apr 29 09:35:14 debconf: <-- 0 OK
Apr 29 09:35:14 debconf: --> PROGRESS STEP 1
Apr 29 09:35:14 debconf: <-- 0 OK
Apr 29 09:35:14 debconf: --> GET auto-install/classes
Apr 29 09:35:14 debconf: <-- 0 net;partition/base;partition/regular;partition/auto;net/dhcp;partition/home;partition/lvm;mimuntu;mimuntu/trusty;loc/fr_FR
Apr 29 09:35:14 debconf: --> SUBST hands-off/item DESC Preseed Early script for class “net”
Apr 29 09:35:14 debconf: Adding [DESC] -> [Preseed Early script for class “net”]
Apr 29 09:35:14 debconf: <-- 0
Apr 29 09:35:14 debconf: --> PROGRESS INFO hands-off/item
Apr 29 09:35:14 debconf: <-- 0 OK
Apr 29 09:35:15 early_script: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 09:35:15 early_script: umount: can't umount /media: Invalid argument
Apr 29 09:35:15 early_script: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 09:35:20 early_script: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 09:35:20 early_script: umount: can't umount /media: Invalid argument
Apr 29 09:35:20 early_script: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 09:35:20 early_script: mount: mounting /dev/fd0 on /media failed: No such file or directory
Apr 29 09:35:20 early_script: umount: can't umount /media: Invalid argument
Apr 29 09:35:20 early_script: mount: mounting /dev/fd0 on /media failed: No such file or directory
Apr 29 09:35:20 debconf: --> GET dbg/pauses
Apr 29 09:35:20 debconf: <-- 0 classes
Apr 29 09:35:20 net/early_script: debug: Running...
Apr 29 09:35:20 debconf: --> GET dbg/flags
Apr 29 09:35:20 debconf: <-- 10 dbg/flags doesn't exist
Apr 29 09:35:21 debconf: --> GET auto-install/classes
Apr 29 09:35:21 debconf: <-- 0 net;partition/base;partition/regular;partition/auto;net/dhcp;partition/home;partition/lvm;mimuntu;mimuntu/trusty;loc/fr_FR
Apr 29 09:35:21 debconf: --> PROGRESS STEP 1
Apr 29 09:35:21 debconf: <-- 0 OK
Apr 29 09:35:21 debconf: --> SUBST hands-off/item DESC Preseed Early script for class “partition/base”
Apr 29 09:35:21 debconf: Adding [DESC] -> [Preseed Early script for class “partition/base”]
Apr 29 09:35:21 debconf: <-- 0
Apr 29 09:35:21 debconf: --> PROGRESS INFO hands-off/item
Apr 29 09:35:21 debconf: <-- 0 OK
Apr 29 09:35:21 early_script: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 09:35:21 early_script: umount: can't umount /media: Invalid argument
Apr 29 09:35:21 early_script: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 09:35:27 early_script: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 09:35:27 early_script: umount: can't umount /media: Invalid argument
Apr 29 09:35:27 early_script: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 09:35:27 early_script: mount: mounting /dev/fd0 on /media failed: No such file or directory
Apr 29 09:35:27 early_script: umount: can't umount /media: Invalid argument
Apr 29 09:35:27 early_script: mount: mounting /dev/fd0 on /media failed: No such file or directory

Here is the mediamount logs with set -x:

Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: [
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: =
Apr 29 12:00:07 preseed/run: driver
Apr 29 12:00:07 preseed/run: ]
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: [
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: =
Apr 29 12:00:07 preseed/run: floppy
Apr 29 12:00:07 preseed/run: ]
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: [
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: =
Apr 29 12:00:07 preseed/run: driver-injection-disk
Apr 29 12:00:07 preseed/run: ]
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: MNT=/media
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: media_mounted
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: grep
Apr 29 12:00:07 preseed/run: -q
Apr 29 12:00:07 preseed/run: ^/media$
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: cut
Apr 29 12:00:07 preseed/run: -d
Apr 29 12:00:07 preseed/run: -f3
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: mount
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: + [ -d /hd-media ]
Apr 29 12:00:07 preseed/run: + grep -q ^vfat /proc/modules
Apr 29 12:00:07 preseed/run: + log-output -t mountmedia modprobe -q vfat
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: devlist
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: [
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: ]
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: list-devices
Apr 29 12:00:07 preseed/run: disk
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: + list-devices maybe-usb-floppy
Apr 29 12:00:07 preseed/run: + list-devices floppy
Apr 29 12:00:07 preseed/run: + list-devices partition
Apr 29 12:00:07 preseed/run: + try_mount /dev/vda
Apr 29 12:00:07 preseed/run: + mount /dev/vda -tauto /media
Apr 29 12:00:07 preseed/run: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 12:00:07 preseed/run: + true
Apr 29 12:00:07 preseed/run: + umount /media
Apr 29 12:00:07 preseed/run: umount: can't umount /media: Invalid argument
Apr 29 12:00:07 preseed/run: + true
Apr 29 12:00:07 preseed/run: + mount /dev/vda -tauto /media
Apr 29 12:00:07 preseed/run: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 12:00:07 preseed/run: + media_mounted
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: grep
Apr 29 12:00:07 preseed/run: -q
Apr 29 12:00:07 preseed/run: ^/media$
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: cut
Apr 29 12:00:07 preseed/run: -d
Apr 29 12:00:07 preseed/run: -f3
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: +
Apr 29 12:00:07 preseed/run: mount
Apr 29 12:00:07 preseed/run:
Apr 29 12:00:07 preseed/run: + [ 1 = 1 ]
Apr 29 12:00:07 preseed/run: + sleep 5
Apr 29 12:00:12 preseed/run: +
Apr 29 12:00:12 preseed/run: devlist
Apr 29 12:00:12 preseed/run:
Apr 29 12:00:12 preseed/run: +
Apr 29 12:00:12 preseed/run: [
Apr 29 12:00:12 preseed/run:
Apr 29 12:00:12 preseed/run: ]
Apr 29 12:00:12 preseed/run:
Apr 29 12:00:12 preseed/run: +
Apr 29 12:00:12 preseed/run: list-devices
Apr 29 12:00:12 preseed/run: disk
Apr 29 12:00:12 preseed/run:
Apr 29 12:00:12 preseed/run: + list-devices maybe-usb-floppy
Apr 29 12:00:13 preseed/run: + list-devices floppy
Apr 29 12:00:13 preseed/run: + list-devices partition
Apr 29 12:00:13 preseed/run: + try_mount /dev/vda
Apr 29 12:00:13 preseed/run: + mount /dev/vda -tauto /media
Apr 29 12:00:13 preseed/run: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 12:00:13 preseed/run: + true
Apr 29 12:00:13 preseed/run: + umount /media
Apr 29 12:00:13 preseed/run: umount: can't umount /media: Invalid argument
Apr 29 12:00:13 preseed/run: + true
Apr 29 12:00:13 preseed/run: + mount /dev/vda -tauto /media
Apr 29 12:00:13 preseed/run: mount: mounting /dev/vda on /media failed: Invalid argument
Apr 29 12:00:13 preseed/run: + media_mounted
Apr 29 12:00:13 preseed/run: +
Apr 29 12:00:13 preseed/run: grep
Apr 29 12:00:13 preseed/run: -q
Apr 29 12:00:13 preseed/run: ^/media$
Apr 29 12:00:13 preseed/run:
Apr 29 12:00:13 preseed/run: +
Apr 29 12:00:13 preseed/run: cut
Apr 29 12:00:13 preseed/run: -d
Apr 29 12:00:13 preseed/run: -f3
Apr 29 12:00:13 preseed/run:
Apr 29 12:00:13 preseed/run: +
Apr 29 12:00:13 preseed/run: mount
Apr 29 12:00:13 preseed/run:
Apr 29 12:00:13 preseed/run: + [ 2 = 1 ]
Apr 29 12:00:13 preseed/run: + DEV=/dev/fd0
Apr 29 12:00:13 preseed/run: + [ ! -e /dev/fd0 ]
Apr 29 12:00:13 preseed/run: + log-output -t mountmedia modprobe -q floppy
Apr 29 12:00:13 preseed/run: + update-dev --settle
Apr 29 12:00:13 preseed/run: + [ ! -e /dev/fd0 ]
Apr 29 12:00:13 preseed/run: + log-output -t mountmedia modprobe -q ide-floppy
Apr 29 12:00:13 preseed/run: + true
Apr 29 12:00:13 preseed/run: + update-dev --settle
Apr 29 12:00:13 preseed/run: + try_mount /dev/fd0
Apr 29 12:00:13 preseed/run: + mount /dev/fd0 -tauto /media
Apr 29 12:00:13 preseed/run: mount: mounting /dev/fd0 on /media failed: No such file or directory
Apr 29 12:00:13 preseed/run: + true
Apr 29 12:00:13 preseed/run: + umount /media
Apr 29 12:00:13 preseed/run: umount: can't umount /media: Invalid argument
Apr 29 12:00:13 preseed/run: + true
Apr 29 12:00:13 preseed/run: + mount /dev/fd0 -tauto /media
Apr 29 12:00:13 preseed/run: mount: mounting /dev/fd0 on /media failed: No such file or directory