> On Thu, 2015-12-10 at 13:46 +0000, Luke Raimbach wrote: > > Hi All, > > > > Some years ago I remember adding more metadata SSDs to a GPFS 3.5 file > > system (system pool with MD only disks) and then trying to restripe > > the metadata. > > > > It didn’t work and I asked about it, only to discover that metadata > > doesn't get restriped. > > > > Has this changed? Does it matter if MD is not restriped? I ask because > > I'll probably want to add more MD SSDs to a new system in the near > > future. > > > > Hum, that is I believe inaccurate. Metadata does get restriped in at least the > case where you move it from one set of disks to another set of disks. It > should > also get restriped it you change the replication factor. However I am pretty > sure > that it gets restriped without the necessity to move it from one set of disks > to > another as well. > > The caveat is that you cannot restripe *just* the metadata. You have to > restripe > the whole file system... Or at least that used to be the case and maybe why > you > have the idea the metadata didn't get restriped. > Whether this has changed in 4.x is another matter that perhaps someone from > IBM can answer.
Ah yes I remember now. I was wanting to rebalance the disk usage (rather than move on to new disks - I knew this would work obviously). You're right in that I had to restripe the whole file system and this would have taken forever, so I just didn't bother! Cheers Luke. The Francis Crick Institute Limited is a registered charity in England and Wales no. 1140062 and a company registered in England and Wales no. 06885462, with its registered office at 215 Euston Road, London NW1 2BE. _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
