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Bug 1758357

Summary: "+" character on kernel line in grub.conf causes augeas to fail to parse the file
Product: Red Hat Enterprise Linux 7 Reporter: Anitha Udgiri <audgiri>
Component: augeasAssignee: Pino Toscano <ptoscano>
Status: CLOSED ERRATA QA Contact: YongkuiGuo <yoguo>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 7.4CC: adam.maynard, jsuchane, mxie, rjones, tzheng, yoguo, zili
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: V2V
Fixed In Version: augeas-1.4.0-10.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1769314 (view as bug list) Environment:
Last Closed: 2020-09-29 19:20:55 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:
Bug Depends On:    
Bug Blocks: 1769314    

Description Anitha Udgiri 2019-10-03 21:57:59 UTC 
Description of problem:

Customer is unable to import a VMware VM. 
The error in the import log says :

virt-v2v: error: no kernels were found in the bootloader configuration.



libguestfs: trace: v2v: aug_get = "Get did not match entire input"
augeas failed to parse /boot/grub/grub.conf:
 error "Get did not match entire input" at line 15 char 0 in lens /usr/share/augeas/lenses/dist/grub.aug:286.14-287.43:
augeas failed to parse /boot/grub/menu.lst:
 error "Get did not match entire input" at line 15 char 0 in lens /usr/share/augeas/lenses/dist/grub.aug:286.14-287.43:
augeas failed to parse /etc/grub.conf:
 error "Get did not match entire input" at line 1 char 0 in lens /usr/share/augeas/lenses/dist/grub.aug:286.14-287.43:
augeas failed to parse /etc/host.conf:
 error "Iterated lens matched less than it should" at line 11 char 11 in lens /usr/share/augeas/lenses/dist/host_conf.aug:66.10-.48:
augeas failed to parse /etc/inputrc:
 error "Syntax error" at line 114 char 0 in lens /usr/share/augeas/lenses/dist/inputrc.aug:52.10-.69:
augeas failed to parse /etc/modprobe.conf:
 error "Iterated lens matched less than it should" at line 308 char 0 in lens /usr/share/augeas/lenses/dist/modprobe.aug:103.10-.32:
augeas failed to parse /etc/modprobe.d/unsupported-modules:
 error "Iterated lens matched less than it should" at line 10 char 0 in lens /usr/share/augeas/lenses/dist/modprobe.aug:103.10-.32:
augeas failed to parse /etc/ntp.conf:
 error "Iterated lens matched less than it should" at line 4 char 7 in lens /usr/share/augeas/lenses/dist/ntp.aug:126.14-129.45:
augeas failed to parse /etc/samba/smbusers:
 error "Iterated lens matched less than it should" at line 11 char 0 in lens /usr/share/augeas/lenses/dist/smbusers.aug:28.10-.46:
augeas failed to parse /etc/sysconfig/network/if-down.d/ndp-proxy:
 error "Syntax error" at line 58 char 27 in lens /usr/share/augeas/lenses/dist/shellvars.aug:194.12-.60:
augeas failed to parse /etc/sysconfig/network/if-up.d/SuSEfirewall2:
 error "Syntax error" at line 22 char 3 in lens /usr/share/augeas/lenses/dist/shellvars.aug:194.12-.60:
augeas failed to parse /etc/sysconfig/network/if-up.d/ndp-proxy:
 error "Syntax error" at line 58 char 27 in lens /usr/share/augeas/lenses/dist/shellvars.aug:194.12-.60:
augeas failed to parse /etc/sysconfig/network/ifroute-lo:
 error "Syntax error" at line 4 char 3 in lens /usr/share/augeas/lenses/dist/shellvars.aug:194.12-.60:
libguestfs: trace: v2v: glob_expand "/var/lib/rpm/__db.00?"

Version-Release number of selected component (if applicable):

augeas-1.4.0-6.el7_6.1.x86_64


Attached the import.log and grub.conf for reference
Comment 4 Richard W.M. Jones 2019-10-03 22:15:15 UTC 
Reproducer:

$ mkdir -p /var/tmp/root/etc                                                
$ cp grub.conf /var/tmp/root/etc                                            
$ augtool -r /var/tmp/root                                                  
augtool> get /augeas/files/etc/grub.conf/error/message                      
/augeas/files/etc/grub.conf/error/message = Get did not match entire input
augtool> get /augeas/files/etc/grub.conf/error/line                         
/augeas/files/etc/grub.conf/error/line = 15

The problem is caused by the "+" character on line 15.
Comment 5 Pino Toscano 2019-10-07 11:46:49 UTC 
(In reply to Richard W.M. Jones from comment #4)
> Reproducer:
> 
> $ mkdir -p /var/tmp/root/etc                                                
> $ cp grub.conf /var/tmp/root/etc                                            
> $ augtool -r /var/tmp/root                                                  
> augtool> get /augeas/files/etc/grub.conf/error/message                      
> /augeas/files/etc/grub.conf/error/message = Get did not match entire input
> augtool> get /augeas/files/etc/grub.conf/error/line                         
> /augeas/files/etc/grub.conf/error/line = 15
> 
> The problem is caused by the "+" character on line 15.

Indeed, that is the issue, and it can be reproduced also with upstream git.
Easy fix, just sent upstream:
https://github.com/hercules-team/augeas/pull/647
Comment 6 Richard W.M. Jones 2019-10-23 10:10:56 UTC 
Upstream in Augeas:
https://github.com/hercules-team/augeas/commit/2ba77589baee1bf2d43d3a49f8e6f3eb522e5bba
Comment 7 Richard W.M. Jones 2019-11-11 18:09:22 UTC 
*** Bug 1770981 has been marked as a duplicate of this bug. ***
Comment 9 YongkuiGuo 2020-02-06 07:38:35 UTC 
Verified with package:
augeas-1.4.0-10.el7.x86_64

Steps:

1.
$ mkdir -p /var/tmp/root/etc                                                
$ cp grub.conf /var/tmp/root/etc

2.                                            
$ augtool -r /var/tmp/root
augtool> print /files/etc/grub.conf
/files/etc/grub.conf
/files/etc/grub.conf/#comment[1] = "Modified by YaST2. Last modification on Thu Jul  4 12:45:58 ART 2019"
/files/etc/grub.conf/timeout = "0"
/files/etc/grub.conf/gfxmenu = "(hd0,0)/boot/message"
/files/etc/grub.conf/default = "0"
/files/etc/grub.conf/#comment[2] = "##Don't change this comment - YaST2 identifier: Original name: linux###"
/files/etc/grub.conf/title[1] = "Filr 3.0 - 3.0.101-108.68"
/files/etc/grub.conf/title[1]/root = "(hd0,0)"
/files/etc/grub.conf/title[1]/kernel = "/boot/vmlinuz-3.0.101-108.68-default"
/files/etc/grub.conf/title[1]/kernel/root = "/dev/sda1"
/files/etc/grub.conf/title[1]/kernel/disk = "/dev/disk/by-id/scsi-360022480000000000000000000000000"
/files/etc/grub.conf/title[1]/kernel/splash = "silent"
/files/etc/grub.conf/title[1]/kernel/USE_BY_UUID_DEVICE_NAMES = "1"
/files/etc/grub.conf/title[1]/kernel/quiet
/files/etc/grub.conf/title[1]/kernel/showopts
/files/etc/grub.conf/title[1]/kernel/vga = "normal"
/files/etc/grub.conf/title[1]/kernel/net.ifnames = "0"
/files/etc/grub.conf/title[1]/kernel/biosdevname = "0"
/files/etc/grub.conf/title[1]/initrd = "/boot/initrd-3.0.101-108.68-default"
/files/etc/grub.conf/#comment[3] = "##Don't change this comment - YaST2 identifier: Original name: failsafe###"
/files/etc/grub.conf/title[2] = "Failsafe -- Filr 3.0 - 3.0.101-108.68"
/files/etc/grub.conf/title[2]/root = "(hd0,0)"
/files/etc/grub.conf/title[2]/kernel = "/boot/vmlinuz-3.0.101-108.68-default"
/files/etc/grub.conf/title[2]/kernel/root = "/dev/sda1"
/files/etc/grub.conf/title[2]/kernel/disk = "/dev/disk/by-id/scsi-360022480000000000000000000000000"
/files/etc/grub.conf/title[2]/kernel/splash = "silent"
/files/etc/grub.conf/title[2]/kernel/USE_BY_UUID_DEVICE_NAMES = "1"
/files/etc/grub.conf/title[2]/kernel/ide = "nodma"
/files/etc/grub.conf/title[2]/kernel/apm = "off"
/files/etc/grub.conf/title[2]/kernel/noresume
/files/etc/grub.conf/title[2]/kernel/edd = "off"
/files/etc/grub.conf/title[2]/kernel/powersaved = "off"
/files/etc/grub.conf/title[2]/kernel/nohz = "off"
/files/etc/grub.conf/title[2]/kernel/highres = "off"
/files/etc/grub.conf/title[2]/kernel/processsor.max+cstate = "1"
...


The '+' character can be parsed correctly.
Comment 11 errata-xmlrpc 2020-09-29 19:20:55 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 (augeas bug fix and enhancement update), 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://access.redhat.com/errata/RHBA-2020:3862