[ale] Extend file system with -r while using lvextend command

[Elliot Holden]

I found out you can extend the filesystem while extending the lvm 
simultaneously. So it does not have to be in 2 separate commands. Using 
the -r option or --resizefs with lvextend will do the trick. This way 
you don't have to unmount the filesystem, extend the filesystem (with 
xfs_growfs) and then remount the filesystem. Here is the syntax.

[elliot at newton ~]$ sudo lvextend -l +100%FREE -r /dev/rhel/home


Does any see an issue with doing this type of modification while the 
filesystem is still mounted? Does anyone know if the filesystem gets 
unmounted and remounted during this command while using -r ? Just in 
case some other process is writing to the filesystem at the same time. 
It's been brought to my attention by a member of my Perl group that you 
could potentially lose data this way. So I wanted to find out if there 
are any protections going on in the background while executing this command.


Thanks


E.

-- 
Elliot Holden
706-231-9776
elliot at elliotmywebguy.com
http://www.elliotmywebguy.com