EXT4 virtual disk optimization (2nd edition)

Hi,

Following the previous post, if you want to create a brand-new ext4 filesystem with most of the performance settings activated, you can do it this way:

# mkfs
mkfs.ext4 -T news -m 1 -I 128 -v -O "^has_journal,^dir_index,^dir_nlink,^huge_file,^metadata_csum,^quota" /dev/sda1
# tune2fs
tune2fs -o "journal_data_writeback,^user_xattr,^acl,nobarrier,discard" /dev/sda1

And then, in the /etc/fstab file you can use the following mount-point parameters:

# /etc/fstab
noacl,nouser_xattr,async,noatime,data=writeback,barrier=0,nobh,commit=1234567,inode_readahead_blks=2,delalloc,discard

ALERT
No implicit nor explicit warranty of any kind is stated here. These commands and/or settings may cause data loss. Use them wisely at your own risk!