ZFS zpool and file system version numbers and features

There is an interesting post which summarises what features has each release of ZFS:

http://blogs.oracle.com/stw/entry/zfs_zpool_and_file_system

Really worth reading.

sftp - how to log file transfers

Just recently I needed to log file transfers using sftp. Here is short description how to achieve it (I am using RedHat/CentOS in my example).Edit file

/etc/ssh/sshd_config

and change line:


Subsystem       sftp    /usr/libexec/openssh/sftp-server

to

Subsystem       sftp    /usr/libexec/openssh/sftp-server -l INFO

and then restart ssh service:

service ssh restart

Having that you can watch transfered files in /var/log/messages (they are identified by string "sftp-server"