Sysop:FileSystemsLinux

• SSHFS Remote filesystems remotly over SSH
• NFS Network File System
• sysop:GFS Global File System

BTRFS

• http://blog.xenodesystems.com/2014/05/btrfs-maintenance-and-other-tips.html

Add to /etc/fstab

autodefrag,compress=lzo,space_cache #evtl. mit ssd für ssds

Defrag for each mountpoint:

find / -xdev -type f -print -exec btrfs filesystem defrag '{}' \;
reboot

Defrag again for each mountpoint:

btrfs filesystem defragment -v -clzo /
reboot

XFS

From http://spamaps.org/raidtests.php :

EXT3 is extremely robust and mature. [...] but slow ....

XFS takes the performance numbers [...] XFS *really* gets trounced on the delete speed. [...] it makes one think twice about using XFS for something like Maildir storage.

Additional interesting Links:

• http://ubuntuforums.org/showthread.php?t=398332
• http://seife.kernalert.de/blog/2009/05/28/improving-xfs-unlink-performance/
• http://everything2.com/index.pl?node_id=1479435
• http://piao-tech.blogspot.com/2007/04/file-system-benchmarks-for-postfix-mail.html

maildirsetup

mkfs.xfs -f -l size=64m -d agcount=16
mount -t xfs -o noatime,nodiratime,logbufs=8

Random bits:

• http://www.dovecot.org/list/dovecot/2011-November/079513.html
• http://dovecot.org/pipermail/dovecot/2010-May/048626.html
• http://blog.tsunanet.net/2011/08/mkfsxfs-raid10-optimal-performance.html