Re: Help creating filesystem (xfs) and partitioning

[Stan Hoeppner <stan@hardwarefreak.com>]

On 7/24/2013 12:07 PM, Roberto Spadim wrote:

> Could i use ext3 or ext4 for boot filesystem?  I need crash security (ok a
> ups is the best solution) xfs could be used too?

Again, Roberto, a journaling filesystem is not necessary for /boot.  It
will not make files in /boot any more crash resistant.  Files in /boot
are only modified when you replace (upgrade) your kernel.  Corruption
can only occur when file writes are in flight but not completely on
disk.  Therefore, to corrupt files in /boot, the machine must crash or
lose power while you're installing a new kernel, i.e. within a window of
about 10 seconds.  There are 31,536,000 seconds in a year.  So the odds
of a crash/power loss during any one of your kernel upgrades are, if my
math is close, approximately

1 in 3,153,600

> If i need a home directory with crypt filesystem, what should i use? Two
> partitions one with xfs and other with dmcrypt (for example) and xfs, or
> only one partition and a loop mount with crypt and quota limit for home
> directory?

Is this a workstation, personal server, or multiuser server with decent
load?  If the load is light you can get away with multiple XFS
filesystem on a single spindle, separate rootfs and home.

-- 
Stan