file system

https://linuxexpresso.wordpress.com/2010/03/31/repair-a-broken-ext4-sup…

https://www.reddit.com/r/homelab/comments/7be88s/why_i_think_ceph_is_an…

https://www.howtoforge.com/tutorial/how-to-install-a-ceph-cluster-on-ub…

https://joejulian.name/post/glusterfs-replication-dos-and-donts/

https://en.m.wikipedia.org/wiki/Comparison_of_distributed_file_systems

https://en.wikipedia.org/wiki/List_of_file_systems#Distributed_parallel…

https://www.reddit.com/r/sysadmin/comments/3vyb1h/gpfs_vs_ceph_gluster_…

https://thelastmaimou.wordpress.com/2013/05/04/magic-soup-ext4-with-ssd…
https://wiki.gentoo.org/wiki/SDCard#Filesystem

apt-get install cryptsetup
vgscan
vgchange -a y vg00
lvscan
mkdir /media/home
cryptsetup luksOpen /dev/vg00/home home_antigo
ls /dev/mapper
mount /dev/mapper/home_antigo /media/home

#fsck.msdos -aw /dev/sdb1

logical volume - /dev/vg00/home
luks_device - vg00-home_crypt
filesystem - /dev/mapper/vg00-home_crypt

#lvresize -L +50G /dev/vg00/home
#cryptsetup resize vg00-home_crypt
#resize2fs /dev/mapper/vg00-home_crypt


lvextend -l +1221 /dev/vg00/home

http://tofu.org/drupal/node/71

http://www.debuntu.org/how-to-create-a-filesystem-within-another-partit…