[CentOS] compare zfs xfs and jfs o

Sat Aug 4 20:12:04 UTC 2012
John R Pierce <pierce at hogranch.com>

On 08/04/12 7:01 AM, ashkab rahmani wrote:
> hello
> i have 16tb storage. 8x2tb sata raided.
> i want to share it on network via nfs.
> which file system is better for it?

we are using XFS with CentOS 6.latest on 80TB file systems, works quite 
well.   handles a mix of many tiny files and very large files without 
any special tuning.

Theres one big issue with NFS that requires a workaround... XFS requires 
64 bit inodes on a large file system ('inode64'), and by default, NFS 
wants to use the inode as the unique ID for the export, this doesn't 
work as that unique ID has to be 32 bits, so you have to manually 
specify a unique identifier for each share from a given server.   I 
can't remember offhand what the specific option is, but you can specify 
1, 2, 3, 4 for the share identifiers, or any other unique integer.  if 
you only export the root of a file system, tis is not a problem.   this 
problem is squarely an NFS implementation problem, that code should have 
been fixed eons ago.

john r pierce                            N 37, W 122
santa cruz ca                         mid-left coast