fstab question

deriklogov1983 · 08-10-2011, 09:54 AM

Hi,

I did some changes to filesystem (mount new drives), how do I store them in fstab ? is there any way to make it automatically without editing it line by line ?
If I dont store those changes, after reboot all changes disappeared

EricTRA · 08-10-2011, 10:00 AM

Hello and Welcome to LinuxQuestions,

That's the nature of the beasty

. All mounts you perform manually get unmounted and not mounted automatically on reboot unless they are in the /etc/fstab file. Have a look at the man page for fstab:

Code:

man fstab

to find out what options are available. Every drive mentioned in that file will be automatically mounted (unless if noauto is specified) if available.

You'll have to edit the file and add the necessary lines to it. There's no need to reboot after you've added lines, you can just run:

Code:

mount -a

to (re-)mount what's listed in /etc/fstab.

Looking forward to your participation in the forums. Have fun with Linux.

Kind regards,

Eric

deriklogov1983 · 08-10-2011, 10:20 AM

Hi

Thank You for your response,
I need help with fstab:

here is my current fstab

#
# /etc/fstab
# Created by anaconda on Thu Apr 8 11:22:23 2010
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=d1299467-0e6f-4e11-8a6d-90c281a5a7f4 / ext3 defaults,usrquota 1 1
UUID=6af1af7e-a8c2-4753-b103-d25fa54ea05c /boot ext3 defaults 1 2
UUID=81febb0c-a541-49c5-abee-c712884ce209 swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
/tmp /var/tmp ext3 defaults,usrquota,bind,noauto 0 0

and here is the prinout of my current "mount"
How do you add those new mounted points to fstab ?

root@sub [/]# mount
/dev/sda3 on / type ext3 (rw,usrquota)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
/dev/sda1 on /boot type ext3 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
/dev/loop0 on /tmp type ext3 (rw,noexec,nosuid)
/tmp on /var/tmp type none (rw,noexec,nosuid,bind)
/dev/sdb on /mysqldb type ext3 (rw)
/dev/sdd on /home/backup type ext3 (rw)
/dev/sdc on /hard/disk_c type ext3 (rw)
/dev/sde on /hard/disk_e type ext3 (rw)

EricTRA · 08-10-2011, 10:28 AM

Hello,

Have you tried reading the man page for fstab to see what the numbers and codes (rw, noexec, etc...) mean? If you would have then you'd know how to format a line in fstab. Since I'm in a good mood:

Code:

/dev/sdb	/mysqldb	ext3	rw,errors=remount-ro	0	0
/dev/sdd	/home/backup	ext3	rw,errors=remount-ro	0	0 
/dev/sdc	/hard/disk_c	ext3	rw,errors=remount-ro	0	0
/dev/sde	/hard/disk_e	ext3	rw,errors=remount-ro	0	0

!! Caution !! Take into account that the directories you mention as mountpoints (second column) need to exist and that drives get mounted as root. If you need user access or users being able to mount then you'll need to modify the options. Have a look at the man page of fstab as indicated.

Kind regards,

Eric