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Bug 1667642 - Getting messages like "systemd-udevd[XXX]: Process '/sbin/modprobe -bv sg' failed with exit code 1." on boot
Summary: Getting messages like "systemd-udevd[XXX]: Process '/sbin/modprobe -bv sg' fa...
Keywords:
Status: CLOSED DUPLICATE of bug 1579763
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: dracut
Version: 8.0
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: rc
: 8.0
Assignee: Lukáš Nykrýn
QA Contact: qe-baseos-daemons
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-01-19 09:53 UTC by Jose Castillo
Modified: 2020-08-03 17:43 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-08-03 17:43:33 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Possible patch (652 bytes, patch)
2019-01-19 10:06 UTC, Jose Castillo 		no flags Details | Diff
View All

Description Jose Castillo 2019-01-19 09:53:43 UTC 
Description of problem:
While booting a RHEL 8 server, the following messages are printed in the logs:

Jan 19 09:05:00 localhost systemd-udevd[368]: Process '/sbin/modprobe -bv sg' failed with exit code 1.
Jan 19 09:05:00 localhost systemd-udevd[375]: Process '/sbin/modprobe -bv sg' failed with exit code 1.
Jan 19 09:05:00 localhost systemd-udevd[366]: Process '/sbin/modprobe -bv sg' failed with exit code 1.
Jan 19 09:05:00 localhost systemd-udevd[368]: Process '/sbin/modprobe -bv sg' failed with exit code 1.
Jan 19 09:05:00 localhost systemd-udevd[375]: Process '/sbin/modprobe -bv sg' failed with exit code 1.
Jan 19 09:05:00 localhost systemd-udevd[368]: Process '/sbin/modprobe -bv sg' failed with exit code 1.
Jan 19 09:05:00 localhost systemd-udevd[366]: Process '/sbin/modprobe -bv sg' failed with exit code 1.
Jan 19 09:05:00 localhost systemd-udevd[368]: Process '/sbin/modprobe -bv sg' failed with exit code 1.
Jan 19 09:05:00 localhost systemd-udevd[366]: Process '/sbin/modprobe -bv sg' failed with exit code 1.
Jan 19 09:05:00 localhost systemd-udevd[368]: Process '/sbin/modprobe -bv sg' failed with exit code 1.

Version-Release number of selected component (if applicable):
Red Hat Enterprise Linux 8
systemd-239-10.el8
systemd-udev-239-10.el8

How reproducible:
Always

Steps to Reproduce:
In a system with SCSI devices present, simply check the logs via 'journalctl' and these messages will be there.

Actual results:
modprobe fails to load the 'sg' module during boot.

Expected results:
modprobe doesn't fail and the module 'sg' is loaded as expected.
Comment 1 Jose Castillo 2019-01-19 09:56:16 UTC 
The messages come from the following udev rule:


/usr/lib/udev/rules.d/40-redhat.rules:SUBSYSTEM=="scsi", ENV{DEVTYPE}=="scsi_device", TEST!="[module/sg]", RUN+="/sbin/modprobe -bv sg"
/usr/lib/udev/rules.d/40-redhat.rules:SUBSYSTEM=="scsi", ENV{DEVTYPE}=="scsi_target", TEST!="[module/sg]", RUN+="/sbin/modprobe -bv sg"
This rule is included in the initramfs image, but the module it tries to load is not:


# lsinitrd /boot/initramfs-`uname -r`.img |grep sg
crw-r--r--   1 root     root       1,  11 Oct 30 08:38 dev/kmsg
-rwxr-xr-x   1 root     root        83640 Oct 30 08:38 usr/bin/dmesg
-rw-r--r--   1 root     root          942 Oct 30 08:38 usr/lib/kbd/keymaps/legacy/i386/qwertz/sg-latin1-lk450.map.gz
-rw-r--r--   1 root     root          992 Oct 30 08:38 usr/lib/kbd/keymaps/legacy/i386/qwertz/sg-latin1.map.gz
-rw-r--r--   1 root     root          924 Oct 30 08:38 usr/lib/kbd/keymaps/legacy/i386/qwertz/sg.map.gz
-rw-r--r--   1 root     root         3161 Oct 30 08:38 usr/lib/kbd/keymaps/legacy/i386/qwertz/sg.map.sg-decimal-separator
After using:


# dracut --add-drivers sg /boot/initramfs-`uname -r`.img -v --force
The module is added, and the messages disappear:


# lsinitrd /boot/initramfs-`uname -r`.img |grep sg
Arguments: --add-drivers 'sg' -v --force
crw-r--r--   1 root     root       1,  11 Oct 30 08:38 dev/kmsg
-rwxr-xr-x   1 root     root        83640 Oct 30 08:38 usr/bin/dmesg
-rw-r--r--   1 root     root          942 Oct 30 08:38 usr/lib/kbd/keymaps/legacy/i386/qwertz/sg-latin1-lk450.map.gz
-rw-r--r--   1 root     root          992 Oct 30 08:38 usr/lib/kbd/keymaps/legacy/i386/qwertz/sg-latin1.map.gz
-rw-r--r--   1 root     root          924 Oct 30 08:38 usr/lib/kbd/keymaps/legacy/i386/qwertz/sg.map.gz
-rw-r--r--   1 root     root         3161 Oct 30 08:38 usr/lib/kbd/keymaps/legacy/i386/qwertz/sg.map.sg-decimal-separator
-rw-r--r--   1 root     root        20920 Oct 30 08:38 usr/lib/modules/4.18.0-58.el8.x86_64/kernel/drivers/scsi/sg.ko.xz
Comment 2 Jose Castillo 2019-01-19 10:01:34 UTC 
Changing component from systemd to dracut, since there seems to be the problem. 

Dracut version is dracut-049-8.git20181030.el8.x86_64
Comment 3 Jose Castillo 2019-01-19 10:06:54 UTC 
Created attachment 1521769 [details]
Possible patch

Possible patch, very simple. It just adds the 'sg' (scsi generic) module to the list of modules to be loaded, when the other scsi module are loaded (sd_mod, sr_mod)
Comment 6 David Tardon 2020-08-03 17:43:33 UTC 

*** This bug has been marked as a duplicate of bug 1579763 ***
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