Device-mapper behaviour booting on init=bin/bash


 
Thread Tools Search this Thread
Operating Systems Linux Red Hat Device-mapper behaviour booting on init=bin/bash
# 1  
Old 08-19-2014
Wrench Device-mapper behaviour booting on init=bin/bash

Good morning

Recently we needed to change the password from a redhat 6.5 system that no one knew the root password.

Starting the system with the init=/bin/bash method took us to the following scenario:

system_vg active with only root_lv and tmpfs mounted.

our entries at fstab are like "/dev/mapper/system_vg-root_lv /" kind of thing so the problem came when we tried to mount any other fs cause there were no other objects at /dev/mapper except system_vg-root_lv.

Is there anyway to reload the other lvs into /dev/mapper in order to be able to mount them?

I tried to scan with vgscan and lvscan after changing the lock file for lvm2 to /lock cause the lock file for lvm is located at /var/lock/lvm and that fs did not exist.

Thanks for the help in advance.
Regards
# 2  
Old 08-21-2014
Try this:
Code:
# lvm vgscan
# lvm vgchange -a y

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

In Bash shell - the ps -ef shows only the /bin/bash but the script name is not displayed

In Bash shell - the ps -ef shows only the /bin/bash but the script name is not displayed ? Is there any way to get the script names for the process command ? --- Post updated at 08:39 AM --- in KSH (Korn Shell), my command output shows the script names but when run in the Bash Shell... (3 Replies)
Discussion started by: i4ismail
3 Replies

2. UNIX for Advanced & Expert Users

Command to see the logical volume path, device mapper path and its corresponding dm device path

Currently I am using this laborious command lvdisplay | awk '/LV Path/ {p=$3} /LV Name/ {n=$3} /VG Name/ {v=$3} /Block device/ {d=$3; sub(".*:", "/dev/dm-", d); printf "%s\t%s\t%s\n", p, "/dev/mapper/"v"-"n, d}' Would like to know if there is any shorter method to get this mapping of... (2 Replies)
Discussion started by: royalibrahim
2 Replies

3. Shell Programming and Scripting

Usage of #!/bin/sh vs #!/bin/bash shell scripts?

Some question about the usage of shell scripts: 1.) Are the commands of the base shell scripts a subset of bash commands? 2.) Assume I got a long, long script WITHOUT the first line. How can I find out if the script was originally designed für "sh" or "bash"? 3.) How can I check a given... (3 Replies)
Discussion started by: pstein
3 Replies

4. Shell Programming and Scripting

Bash syntax behaviour : [[ vs [

Hello. In the following : RESTORE_FF contain a file name : a_file.tar.gz I am testing in a directory if "a_file.tar.gz" exists and or if any file like "a_file.tar.gz" exists. So "a_file.tar.gz" will give me file exists So "a_file.tar.gz." will give me file exists So... (5 Replies)
Discussion started by: jcdole
5 Replies

5. Programming

How to init the SPI device in daemon?

I have to make a linux monitoring daemon that works with a SPI device (/dev/spidev). However, I always failed to init this SPI device. The return error code is 25, which means "inappropriate ioctl for device". As I know, daemon runs in background and doesn't have a control terminal and this might... (3 Replies)
Discussion started by: bus147
3 Replies

6. Linux

If i don't have raid disks can i shut down dmraid device-mapper?

hello my centOS newly installed system loading dmraid modules on startup I did remove all LVM/raid things from system installation menus and after installation too but dmraid is still there and he says: no raid disks found also I did modprobe -r dm_raid45 and it do remove it but only until... (7 Replies)
Discussion started by: tip78
7 Replies

7. Red Hat

Device Mapper Notations and LVM

Hi, I had a doubt regarding device mapper notations and their corresponding LVM volumes. I have configured a volume group with two logical volumes in it as root and swap. The entries in the /etc/fstab file show the dm notations namely, /dev/mapper/VolGroup00-LogVol01... (2 Replies)
Discussion started by: kanna_geekworkz
2 Replies

8. Red Hat

device-mapper-multipath path [undef]

I have an HP blade with Qlogic HBA's connected to an EVA8000. I have downloaded the latest multipath.conf from HP's website. The drive presented to the server appears to be configured and working except the output of "multipath -l" shows for all paths. What is causing this output? mpath0... (2 Replies)
Discussion started by: manzier
2 Replies

9. Solaris

Solaris 8 booting from wrong device

Hi, I'm trying to boot solaris 8 box and it seems to boot off from wrong device: ok boot -s Boot device: /pci@1f,0/pci@1/scsi@8/disk@0,0:a File and args: -s SunOS Release 5.8 Version Generic_108528-20 64-bit Copyright 1983-2003 Sun Microsystems, Inc. All rights reserved. ifconfig:... (7 Replies)
Discussion started by: Juha
7 Replies

10. Linux

Problem of booting system in init 5 level

Hi, I am using RHEL4 and I am not booting my computer into graphics mode i.e. It gets hangs after the step of Enabling swap space... I.e system is not able to enter into runlevel 5. However, when I boot it into 'runlevel3' and then I do "#startx", It enetrs... (1 Reply)
Discussion started by: jagdish.machhi@
1 Replies
Login or Register to Ask a Question