Hi all, I've a 30TB hardware based RAID array. Wondering what you all thought of using ext4 over XFS. I've been a big XFS fan for years as I'm an Irix transplant but would like your opinions. This 30TB drive will be an NFS exported asset for my users housing home dirs and other frequently accessed files. - aurf
On 01/11/2011 01:47 PM, aurfalien at gmail.com wrote:> Hi all, > > I've a 30TB hardware based RAID array. > > Wondering what you all thought of using ext4 over XFS. > > I've been a big XFS fan for years as I'm an Irix transplant but would > like your opinions. > > This 30TB drive will be an NFS exported asset for my users housing > home dirs and other frequently accessed files. > > - aurfYou will need XFS for a single partition that large. You won't be able to make such a large ext4 partition, I don't think. -- Digimer E-Mail: digimer at alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org
XFS is safe - lots of protection for your data, but it cuts write speeds in half. Ext4 does not slow things down...
On Tue, Jan 11, 2011 at 1:47 PM, <aurfalien at gmail.com> wrote:> > Hi all, > > I've a 30TB hardware based RAID array. > > Wondering what you all thought of using ext4 over XFS. > > I've been a big XFS fan for years as I'm an Irix transplant but would > like your opinions. > > This 30TB drive will be an NFS exported asset for my users housing > home dirs and other frequently accessed files. > > - aurf > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centosWe have a 26 TB XFS partition. Works like a charm. What I really like - the initialization time is only a couple of minutes (as opposed to many hours on a 4 TB ext3 partition every time the OS does an fsck on it). Boris.
On Tuesday, January 11, 2011 01:47:33 pm aurfalien at gmail.com wrote:> I've a 30TB hardware based RAID array. > > Wondering what you all thought of using ext4 over XFS.XFS. But make sure you're using a 64-bit CentOS. 32-bit CentOS (at least C5 of six months or so ago) will in fact run mkfs.xfs on that large of a device; however, the filesystem will silently fail and will no longer mount when you get over 16TB of data. Been there, done that, with C5 32 bit kernel. Reassigned the RDM's containing the PV's for the volumegroup containing the logical volume to a VM running 64-bit C5 and things are fine. There are other issues with XFS on 32-bit kernel as well, but I've not run into those. Best to use 64-bit. I'm using ext4 on less than 16TB filesystems, though, with good success.