Effects of /etc/fstab file!

 
Thread Tools Search this Thread
Operating Systems Linux Red Hat Effects of /etc/fstab file!
# 15  
Old 08-29-2012
After it boots, I would do this... (as root)

Code:
fdisk -l

This will print you your partitions like this:

Code:
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048   300873727   150435840   83  Linux
/dev/sda2       300875774   312498175     5811201    5  Extended
/dev/sda5       300875776   312498175     5811200   82  Linux swap / Solaris

From here, build a new /etc/fstab from scratch, it's pretty basic...

Code:
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    nodev,noexec,nosuid 0       0
/dev/sda1     /               ext4    errors=remount-ro 0       1
/dev/sda5     none            swap    sw              0       0

Main things to note...
1) /etc/mtab check it for proc etc.
2) Is my fs ext3 or ext4 or ??? check /etc/mtab.
3) Swap? well the fdisk will tell you if you had it...
4) Any other mounts that I care about, eg. /var etc.

/etc/mtab will help you alot!

Hope this helps Smilie

Aaron.
# 16  
Old 08-29-2012
hi nix,

if you have overwritten the fstab file , the good part is to restore it from backup if you dont have any backup in system. If you are not restoring it from backup , it will give adverse effects if there were any SAN mounts or NFS mounts etc.

So try to restore , if you dont have backup...you have to convince yourself.......
# 17  
Old 08-29-2012
Heh, maybe there should be a utility like vipw,vigr for /etc/fstab Smilie
# 18  
Old 08-29-2012
You could say the same about anything in /etc/ really... And so design some massive system for maintaining /etc/, creating a swallowed-a-spider-to-kill-the-fly situation -- what do you do when that breaks down, cry?

Restore from backup, of course, because piling software on software hasn't actually made it more reliable, just made an illusion of it.
Login or Register to Ask a Question

Previous Thread | Next Thread

8 More Discussions You Might Find Interesting

1. Ubuntu

Create zip file from root owned fstab

I want to zip up my fstab file for backup purposes. This does not work because of permission issues. cd /etc/ zip -u fstab.zip fstab Can I use this with zip? echo xxx | sudo -S or change fstab owner to me? (3 Replies)
Discussion started by: drew77
3 Replies

2. Shell Programming and Scripting

How to replace value in fstab file?

Hi, I am looking to replace value (fifth and sixth ) column to "0 0" in /etc/fstab file by scripting. can any one please help me. /dev/VolGroup00/tmp /tmp ext3 defaults 1 1 (2 Replies)
Discussion started by: yash_message
2 Replies

3. Ubuntu

Ubuntu encryption and its effects

How will Full Disk encryption effect how open-source software is compiled and run using ubuntu 14.04. Are there alternatives that are recommended? Thank you :). (0 Replies)
Discussion started by: cmccabe
0 Replies

4. IP Networking

effects of bin file stored in nfs & run as daemon

Hi, Good Day, I had this question in my mind.Hope someone can give me his/her thought about it. Question: I had a binary files stored in the nfs system and mounted several workstation locally and running as deamon. Is there in effect to the networks or any problem me arise regarding network... (3 Replies)
Discussion started by: jao_madn
3 Replies

5. Red Hat

3d effects in rhel6

I installed rhel 6.0 in my laptop but it is not upporting 3d graphics of rhel6 and i am getting an error message "Accelerated 3d graphics not available Desktop effects require hardware 3D support." my laptop is dll studio 1558 and my graphic card is ATI Radeon 5470 with 1 gb dedicated ram. (6 Replies)
Discussion started by: nileshgupta
6 Replies

6. Red Hat

3D effects on RHEL6 OC

Hello, I just installed RHEL6 OC on my T61p. It's great! Just for fun I'd like to use some fancy cool Desktop effects. I tried to enable 3D Desktop effects from OC Welcome Center but it gave me error message: Accelerated 3D graphics is not available. Desktop effects require hardware 3D support.... (7 Replies)
Discussion started by: susja
7 Replies

7. Red Hat

edit/write the /etc/fstab file

Hi, I comment out some vol group in fstab accidentally. I also comment the swap space in /etc/fstab But I cannot edit /remove it back by using vi /etc/fstab again in init 1 and init 6 . The file system /etc/fstab is read -only . I cannot chmod ..... What can I do in order to recover it ... (2 Replies)
Discussion started by: chuikingman
2 Replies

8. UNIX for Dummies Questions & Answers

Effects of grep -o when it's not available

I'm on a Solaris box that doesn't have -o as an option for grep (trying to return match only). Is there any way to get this functionality without the -o option? I've tried both sed and awk doing something like: echo "this is a test" | awk '/test/' or echo "this is a test | sed '/test/p'... (8 Replies)
Discussion started by: earnstaf
8 Replies
Login or Register to Ask a Question