I have a problem mount a new disk

ppeto · 03-17-2022, 09:07 AM

I have done all the explanations

Quote:

[root@PAR-363195 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 931.5G 0 disk
├─sda1 8:1 0 512M 0 part /boot
├─sda2 8:2 0 925.1G 0 part /
└─sda3 8:3 0 1G 0 part [SWAP]
sdb 8:16 0 931.5G 0 disk
└─sdb4 8:20 0 931.5G 0 part This is the new hard

But it will not appear here

Quote:

[root@PAR-363195 ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
devtmpfs devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs tmpfs 7.8G 8.7M 7.8G 1% /run
tmpfs tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/sda2 ext4 911G 1.5G 863G 1% /
/dev/sda1 ext4 488M 121M 332M 27% /boot
tmpfs tmpfs 1.6G 0 1.6G 0% /run/user/0

What do I do to appear here?
I also want to merge it with the old hard drive, how is that?

michaelk · 03-17-2022, 09:46 AM

What version of CentOS are you running?
Is this a physical or virtual system?

To get it to appear in the output of df you need to:

Format it with a filesytem if not already accomplished.

Mount the filesystem.

Add a line to your /etc/fstab to automatically mount it a boot time.

You can not easily merge drives together unless you are already using LVM.

phanthaihuan · 04-02-2022, 10:24 AM

Quote:

Originally Posted by michaelk

What version of CentOS are you running?
Is this a physical or virtual system?

To get it to appear in the output of df you need to:

Format it with a filesytem if not already accomplished.

Mount the filesystem.

Add a line to your /etc/fstab to automatically mount it a boot time.

You can not easily merge drives together unless you are already using LVM.

To be honest, I'm not recommend to add a line to /etc/fstab to automatically mount at boot time for non-root disk. If the disk has problem, we have trouble when booting. Non-root disks should be mount after the system booting successfully.

Best regards,
Huan Phan

rknichols · 04-02-2022, 11:50 AM

Quote:

Originally Posted by phanthaihuan

To be honest, I'm not recommend to add a line to /etc/fstab to automatically mount at boot time for non-root disk. If the disk has problem, we have trouble when booting. Non-root disks should be mount after the system booting successfully.

All you have to do is include "nofail" in the options field, and the mount failure will not block booting. Alternatively, use "noauto" instead, and the drive will not be mounted automatically, but a manual mount command with just the device name or the mount point (not both) will pick up all the other parameters from /etc/fstab.

phanthaihuan · 04-03-2022, 08:42 PM

Quote:

Originally Posted by rknichols

All you have to do is include "nofail" in the options field, and the mount failure will not block booting. Alternatively, use "noauto" instead, and the drive will not be mounted automatically, but a manual mount command with just the device name or the mount point (not both) will pick up all the other parameters from /etc/fstab.

Thank you for the information