John R Pierce wrote:
On 8/4/2015 7:14 AM, m.roth@5-cent.us wrote:
CentOS 6.6 (well, just updated with CR). I have some xfs filesystems on a RAID. They've been mounted with the option of defaults. Will it break the whole thing if I now change that to inode64, or was that something I needed to do when the fs was created, or is there some conversion I can run that won't break everything?
you can enable that option at any time, but once you've used it, you can't go back.
note that 64 bit inodes cause a minor issue with NFS if you have shares exported other than the root. there's an easy workaround.
Thanks, John. I believe I did exports elsewhere, last year. This just came up on a huge backup RAID - the rsync was failing, though there was plenty space, and inode64 just popped up from my stack - it was just the conversion that I didn't remember the answer to.
For those looking at this, here's a gotcha: you *cannot* change fstab, then mount -o remount, you *must* umount, then mount. Merely -o remount fails to make the change.
mark