Re: [CentOS] LVM RAID0 and SSD discards/TRIM

-- Joakim Ziegler - Supervisor de postproducción - Terminal joakim@terminalmx.com - 044 55 2971 8514 - 5264 0864 On 20/08/13 13:25, Joakim Ziegler wrote: > On 20/08/13 5:39, Mihai T. Lazarescu wrote: >> On Tue, Aug 20, 2013 at 12:20:01PM +0200, Dennis Jacobfeuerborn wrote: > >>>> Is that correct? Will this solve my problem? I want to confirm that >>>> discard support works on a RAID0 of SSDs using LVM and ext4 before I >>>> start working on getting this legacy application to run on a newer CentOS. >>> >>> What kind of SSD are you using? We use Intel 520's here >>> and don't really see these kind of slowdowns. >> >> You can also check a newer kernel for CentOS 5 from ELrepo: >> >> http://elrepo.org/ > > That's an excellent suggestion, thanks. > > However, can anyone confirm that this in fact works? That is, that LVM > RAID0 of two SSDs and ext4 will allow the file system to issue discards > to the underlying devices? >