Linux - Interview

*] How to permanently mount a disk in linux

• create a vol attach it to inst

{ sudo file -s /dev/xvda1 } --> gives the file system type

• mkfs -t xfs /dev/xvdf --> to Format to a filesystem

• mkdir /mnt --> create an empty directory

• mount /dev/xvdf /mnt --> mount FS to that dir

• blkid /dev/xvdf --> to get blkID

• vi /etc/fstab || UUID=<ID> /mount xfs defaults,nofail || it will be available in d next reboot

• mount -a --> to make it available now itself

now if u detach & attach it to another inst, u can directly mount it without creating file system (mkfs)

if we want to increase d size of EBS

we increase it then, xfs_growfs -d /mnt | growpart /dev/xvdf

{ while creating volume out of snapshot we can choose a different AZ in wich we want that volume to be in, but we cannot choose a different Region, to do that 1st we should copy that snaapshot to another region & then we can create volume out of it in diff region }