It was <2020-06-08 pon 23:57>, when Andreas Beckmann wrote: > Control: tag -1 moreinfo > > On Fri, 05 Jun 2020 21:30:50 +0200 =?utf-8?Q?=C5=81ukasz_Stelmach?= > <l.stelm...@samsung.com> wrote: >> On an amd64 host I created armel chroot with qemu-debootstrap. I >> attempted to install dracut which pulled dmraid and other >> packages. After installing all packages but dmraid apt install shows >> following messages (with set -x added to dmraid.postinst) > > I have a qemu-debootstrap armhf chroot (tarball) that I use for some > tests with pbuilder. Execution of foreign binaries happens with > qemu-user(-static). Installing dmraid there works: > > # apt-get install dmraid > Reading package lists... Done > Building dependency tree > Reading state information... Done > The following additional packages will be installed: > dmsetup libdevmapper1.02.1 libdmraid1.0.0.rc16 libkmod2 udev > The following NEW packages will be installed: > dmraid dmsetup libdevmapper1.02.1 libdmraid1.0.0.rc16 libkmod2 udev > 0 upgraded, 6 newly installed, 0 to remove and 0 not upgraded. > Need to get 126 kB/1845 kB of archives. > After this operation, 9592 kB of additional disk space will be used. > Do you want to continue? [Y/n] > Get:1 http://ftp.de.debian.org/debian unstable/main armhf libdmraid1.0.0.rc16 > armhf 1.0.0.rc16-8 [90.8 kB] > Get:2 http://ftp.de.debian.org/debian unstable/main armhf dmraid armhf > 1.0.0.rc16-8 [35.0 kB] > Fetched 126 kB in 0s (606 kB/s) > debconf: unable to initialize frontend: Dialog > debconf: (No usable dialog-like program is installed, so the dialog > based frontend cannot be used. at > /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line 76, <> line 6.) > debconf: falling back to frontend: Readline > Selecting previously unselected package libkmod2:armhf. > (Reading database ... 13583 files and directories currently installed.) > Preparing to unpack .../0-libkmod2_27+20200310-2_armhf.deb ... > Unpacking libkmod2:armhf (27+20200310-2) ... > Selecting previously unselected package udev. > Preparing to unpack .../1-udev_245.5-3_armhf.deb ... > Unpacking udev (245.5-3) ... > Selecting previously unselected package dmsetup. > Preparing to unpack .../2-dmsetup_2%3a1.02.167-1+b1_armhf.deb ... > Unpacking dmsetup (2:1.02.167-1+b1) ... > Selecting previously unselected package libdevmapper1.02.1:armhf. > Preparing to unpack .../3-libdevmapper1.02.1_2%3a1.02.167-1+b1_armhf.deb ... > Unpacking libdevmapper1.02.1:armhf (2:1.02.167-1+b1) ... > Selecting previously unselected package libdmraid1.0.0.rc16. > Preparing to unpack .../4-libdmraid1.0.0.rc16_1.0.0.rc16-8_armhf.deb ... > Unpacking libdmraid1.0.0.rc16 (1.0.0.rc16-8) ... > Selecting previously unselected package dmraid. > Preparing to unpack .../5-dmraid_1.0.0.rc16-8_armhf.deb ... > Unpacking dmraid (1.0.0.rc16-8) ... > Setting up libkmod2:armhf (27+20200310-2) ... > Setting up udev (245.5-3) ... > A chroot environment has been detected, udev not started. > Setting up libdevmapper1.02.1:armhf (2:1.02.167-1+b1) ... > Setting up dmsetup (2:1.02.167-1+b1) ... > Setting up libdmraid1.0.0.rc16 (1.0.0.rc16-8) ... > Setting up dmraid (1.0.0.rc16-8) ... > Running in chroot, ignoring request. > Processing triggers for libc-bin (2.30-8) ... > >> Setting up dmraid (1.0.0.rc16-8) ... >> + command -v update-initramfs >> + udevadm trigger --subsystem-match=block --action=change >> Failed to scan devices: No such file or directory >> dpkg: error processing package dmraid (--configure): > > In your case, udev does not seem to recognice that is it running in a chroot. > So the failure is in udev and not dmraid. > But the error is probably somewhere in your chroot setup ... > these foreign chroots are a bit tricky.
Indeed, it is udev that fails not dmraid as such. In particular udev
fils to find /sys/subsystem.
I assume, however,that in case of chroot environmets running udevadm
isn't crucial for a successful installation. I was thinking, maybe run
udevadm only if /sys is mounted like this?
--8<---------------cut here---------------start------------->8---
# Don't run udevadm if sysfs isn't mounted
if [ -d /sys/subsystem ]; then
udevadm trigger --subsystem-match=block --action=change
fi
--8<---------------cut here---------------end--------------->8---
Kind regards,
--
Łukasz Stelmach
Samsung R&D Institute Poland
Samsung Electronics
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