Bug 1085562

Summary:	dracut is unable to read crypttab if last line does not contain a newline
Product:	Red Hat Enterprise Linux 6	Reporter:	Kevin Young <kevin_young>
Component:	dracut	Assignee:	dracut-maint-list
Status:	CLOSED ERRATA	QA Contact:	Release Test Team <release-test-team-automation>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6.5	CC:	atodorov, bgoncalv, dracut-maint-list, harald, jonathan, kevin_young, mganisin, pholica, tlavigne
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Cause: If /etc/crypttab does not contain a newline as the last character, the last line is not parsed by dracut. Consequence: The encrypted disk is not unlocked. Fix: dracut was fixed to handle /etc/crypttab without a newline at the end. Result: The encrypted disk specified in the last line is handled, a password is requested and the disk is unlocked.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-07-22 06:38:00 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Kevin Young 2014-04-08 23:05:17 UTC

Description of problem:
When booting to an encrypted root volume and the crypttab has been included in the initramfs.img, if the line in the crypttab file does not end in a newline, it is not properly interpreted by dracut. It would be preferable that dracut give a better error message if it cannot read the crypttab file properly. The error during boot looks like this:

Version-Release number of selected component (if applicable):
dracut-004-336.el6_5.2

How reproducible:
Every time.

Steps to Reproduce:
1. Create crypttab file that contains "cryptroot /dev/xvdf /etc/keyfile" (ensure entry in crypttab does not end in a newline)
2. Run dracut, injecting crypttab and keyfile into initramfs.img
3. update grub.conf to boot to encrypted filesystem root=/dev/mapper/cryptroot

Actual results:
dracut: luksOpen /dev/xvdf luks-587e17f6-c6a6-447e-bd9e-e654e7aaedae /etc/keyfile
dracut Warning: No root device "block:/dev/mapper/cryptroot" found

Expected results:
dracut: luksOpen /dev/xvdf cryptroot /etc/keyfile
dracut: Mounted root filesystem /dev/mapper/cryptroot

Additional info:

Comment 1 Adam Williamson 2014-04-17 17:26:13 UTC

This is filed against Fedora Rawhide, but:

Version-Release number of selected component (if applicable):
dracut-004-336.el6_5.2

is this supposed to be for RHEL 6 or Fedora? Thanks!

Comment 5 Alexander Todorov 2015-04-02 11:24:39 UTC

I wasn't able to reproduce with dracut-004-356.el6.noarch and my /etc/crypptab doesn't contain a new line at the end.


Kevin,
can you see if you can reproduce with RHEL 6.6 ?

Comment 8 errata-xmlrpc 2015-07-22 06:38:00 UTC

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-2015-1328.html

Comment 9 Kevin Young 2015-08-31 16:48:40 UTC

verified the fix