How To Fix Error “Wrong Fs Type, Bad Option, Bad Superblock” When Mounting a Filesystem

Author: , June 23rd, 2023

When trying to mount can XFS filestsen on an AWS instance, I got the error “mount: wrong fs type, bad option, bad superblock on /dev/sdh” Examine the volume’s UUID with the xfs_db command: shell> sudo xfs_db -c uuid /dev/nvme2n1 To fix the problem, you have two options… Temporary Solution Add nouuid mount option to temporarily […]

How To Expand an EBS Volume After a Disk Resize on Amazon Linux

Author: , April 17th, 2023

First, use the AWS Console to modify the volume to the desired size, in our example we want to go from 10GB to 25GB for the root filesystem For a Xen ext4 root volume

For NVMe First, use lsblk to see the raw partitions:

Note how the partition at 259:1 is only 20GB, […]

How To Allow AWS IAM Users EBS Snapshot Create And Delete Access

Author: , July 29th, 2021

SUMMARY: Needed to create an AWS IAM Policy to allow a user access to create and delete EBS snapshots. This script also needed to be able to list volumes:

How To Expand an NVMe EBS Volumes After a Disk Resize on Amazon Linux

Author: , February 19th, 2021

First, use lsblk to see the raw partitions:

Note how the partition at 259:1 is only 20GB, while the entire disk at 259:0 is 40GB. A partition resize is required in this case.

For an EXT4 filesystem, use the resize2fs command instead:

For more information, please visit the AMW Docs:

How To Eject a Volume from the Terminal Command Line in MacOSX

Author: , December 8th, 2015

As always, YMMV…

How To Resize an ext3 Filesystem

Author: , August 31st, 2014

I had to replace an ailing root volume on AWS, so I decided to double the size when I created the new volume from snapshot. After booting, I realized that df still showed the old filesystem size of 10GB, not the new size of 20GB Here is the solution: resize2fs /dev/xvda1

How To Grow EBS Volumes on AWS

Author: , June 27th, 2014

PROCEDURE FOR NON-ROOT FILESYSTEMS: Run the df command and record the device path for the mount point you wish to grow. Unmount the filesystem to insure consistency. Detach the volume from the instance. Create a snapshot of the unmounted filesystem. Create a volume from the snapshot, specifying a larger size in the new volume form. […]

How To Change the Volume on MacOSX in Small Increments

Author: , July 7th, 2012

To change the volume in smaller increments on MacOSX Snow Leopard, hold down Shift-Option when pressing either the Volume-Up or the Volume-Down keys. You should see the volume indicator show a fractional portion of the normal scale selected:

How To Migrate MySQL To A New Volume On CentOS

Author: , October 26th, 2011

Stop MySQL and move the existing database files to the EBS volume.

Use the bind option to the mount command in the /etc/fstab file to direct MySQL to the correct files, then restart:

How To Create An XFS Formatted Filesystem On AWS EC2

Author: , October 26th, 2011

First, use the AWS management console to create and attach a new volume. Note the device name, in our example /dev/sdf.

You now have a 10 GB (or whatever size you specified) EBS volume mounted under /data with an XFS file system, and it will be automatically mounted if the instance reboots.