UpgradeToExt4 - Ext4Converting an ext2 filesystem to ext4 The recommended method for upgrading an ext2 filesystem to ext4 is to back up the entire volume, reformat the storage device with ext4, and restore the entire volume onto the fresh filesystem. This has the effect of defragmenting all files, formatting with larger inodes, adding directory indexes, and speeding up both e2fsck and metadata access by clustering me
109341 – Docker btrfs snapshot driver operation trashed grub, missing operating system
