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Mount file as disk linux

— 1 min read

Commnads

# create a file
$ WORKDIR=/var/tmp
# This will make an empty file with an apparent size of 2G
$ truncate -s +2G "$WORKDIR/disk.img"
# Make it a filesystem
$ mkfs.ext4  "$WORKDIR/disk.img"


# monut the new disk
$ sudo mkdir /mnt/disk
$ sudo mount -o loop "$WORKDIR/disk.img" /mnt/disk


$ df -h /mnt/disk
Filesystem      Size  Used Avail Use% Mounted on
/dev/loop20     2.0G   24K  1.8G   1% /mnt/disk


# reisze the diskA
# add 8G to the size
truncate -s +8G "$WORKDIR/disk.img"
$ sudo resize2fs /dev/loop20
$ df -ah /mnt/disk/
Filesystem      Size  Used Avail Use% Mounted on
/dev/loop20     9.8G   24K  9.4G   1% /mnt/disk

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