Bug 1359144 – flag to reboot automatically when dropping to dracut emergency shell

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Bug 1359144 - flag to reboot automatically when dropping to dracut emergency shell

Summary:	flag to reboot automatically when dropping to dracut emergency shell

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	dracut (Show other bugs)
Sub Component:
Version:	7.3
Hardware:	Unspecified Unspecified

Priority	unspecified Severity unspecified
Target Milestone:	rc
Target Release:	---
Assigned To:	Lukáš Nykrýn
QA Contact:	Release Test Team
Docs Contact:	Maxim Svistunov

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2016-07-22 07:58 EDT by Oliver Haessler
Modified:	2016-11-29 05:25 EST (History)
CC List:	5 users (show)

See Also:
Fixed In Version:
Doc Type:	Release Note
Doc Text:	dracut update The dracut initramfs generator has been updated with a number of bug fixes and enhancements over the previous version. Notably: * `dracut` gained a new kernel command-line option "rd.emergency=[reboot\|poweroff\|halt]", which specifies what action to execute in case of a critical failure. When using "rd.emergency=[reboot\|poweroff\|halt]", the "rd.shell=0" option should also be specified. * The "reboot", "poweroff", and "halt" commands now work in the emergency shell of `dracut`. * `dracut` now supports multiple bond, bridge, and VLAN configurations on the kernel command line. * The device timeout can now be specified on the kernel command line using the "rd.device.timeout=<seconds>" option. * DNS name servers specified on the kernel command line are now used in DHCP. * `dracut` now supports 20-byte MAC addresses. * Maximum Transmission Unit (MTU) and MAC addresses are now set correctly for DHCP and IPv6 Stateless Address AutoConfiguration (SLAAC). * The "ip=" kernel command line option now supports MAC addresses in brackets. * `dracut` now supports the NFS over RDMA (NFSoRDMA) module. * Support for kdump has been added to Fibre Channel over Ethernet (FCoE) devices. The configuration of FCoE devices is compiled in `kdump initramfs`. Kernel crash dumps can now be saved to FCoE devices. * `dracut` now supports the "--install-optional <file list>" option and the "install_optional_items+= <file>[ <file> ...]" configuration file directive. If you use the new option or directive, the files are installed if they exist, and no error is returned if they do not exist. * `dracut` DHCP now recognizes the "rfc3442-classless-static-routes" option, which enables using classless network addresses.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-11-04 04:05:49 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
rdsosreport.txt (180.40 KB, text/plain) 2016-08-10 12:12 EDT, Jan Stodola	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2016:2530	normal	SHIPPED_LIVE	dracut bug fix and enhancement update	2016-11-03 10:17:01 EDT

Groups: None (edit)

Description Oliver Haessler 2016-07-22 07:58:15 EDT

Description of problem:
It would be great to have a flag that allows a automatic reboot when dracut ends up in a emergency shell.

The use case is, that we re-encrypt notebooks after we got them imaged from the factory of the vendor. After the re-encrypt is done, it drops into a dracut emergency shell. It would be great to reboot at this stage automatically instead of asking the user to reboot.

An option similar to the "panic=N" for the kernel to reboot after N seconds on kernel panic would be great.

Thanks
Oliver

Comment 1 Harald Hoyer 2016-07-22 08:14:31 EDT

This is generally useful.

Will be:

rd.emergency=[reboot|poweroff|halt]:
   specify, what action to execute in case of a critical failure.

Comment 2 Harald Hoyer 2016-07-22 09:19:51 EDT

upstream commit https://github.com/dracutdevs/dracut/commit/c45e856a659a37537c107f7ef3e680abf60a96a5

Comment 4 Jan Stodola 2016-08-10 12:12 EDT

Created attachment 1189721 [details]
rdsosreport.txt

Retested with dracut-033-450.el7, but the rd.emergency= option doesn't work, dracut drops to emergency mode even when rd.emergency=reboot is present on the kernel command line. rdsosreport is attached, moving back to ASSIGNED.

Comment 5 Harald Hoyer 2016-08-12 05:34:33 EDT

you have to turn off the shell:

rd.shell=0 rd.emergency=reboot

Comment 6 Jan Stodola 2016-08-12 08:31:33 EDT

OK, with rd.shell=0 it works as expected.

If rd.shell=0 is really necessary for rd.emergency= to work, it should be mentioned in dracut.cmdline man page, the current description doesn't say anything about it:

rd.emergency=[reboot|poweroff|halt]
   specify, what action to execute in case of a critical failure.

Moving to ASSIGNED to improve the documentation.

Comment 7 Harald Hoyer 2016-08-17 11:38:36 EDT

dracut-033-457.el7

Comment 10 errata-xmlrpc 2016-11-04 04:05:49 EDT

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2530.html

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