Re: [lustre-discuss] Lustre newbie problems: formatting disk or partition with Lustre filesystem fails

Hi Stefano, FYI, the correct syntax to pass options to mkfs.ext4 is '--mkfsoptions=...', so you might want to try something like "--mkfsoptions=-O extents". But your numbers also make me a little unsure whether what you try to do is really what you want. 30 TB is a quite impressive size for a

Re: [lustre-discuss] poor performance on reading small files

On 29.07.2016 04:19, Riccardo Veraldi wrote: > > I am using lustre on ZFS. > > While write performances are excellent also on smaller files, I find > there is a drop down in performance > on reading 20KB files. Performance can go as low as 200MB/sec or even > less. Getting 200 MB/s with 20kB file

Re: [lustre-discuss] Lustre client intel

2.7.5x oder 2.8er oder auch den von IEEL3.0, der heißt 2.7.13. Erich müsste letzeren haben. -- Dr. Oliver Mangold System Analyst NEC Deutschland GmbH HPC Division Raiffeisenstraße 14 70771 Leinfelden-Echterdingen Germany Phone: +49 711 78055 13 Mail: oliver.mang...@emea.nec.com<mailto:oliver.m

Re: [lustre-discuss] OST not connecting to secondary mgs on initial startup

On 03.03.2016 15:06, Kurt Strosahl wrote: > Good Morning, > > I'm trying to add a new ost to a lustre file system, one in which the mgs > is presently on its failover node. It looks like the ost does not failover > and connect to the mgs. I encountered a similar problem recently with 2.7.x.

Re: [lustre-discuss] How to configure OST and OSS on separate nodes

On 27.01.2016 10:36, jeevan.patn...@wipro.com wrote: But my question is: Can I use OST on client and OSS on separate server (if it is possible to run OST and OSS on separate servers) I don't understand what you mean. OSS is just a name for the machine which run

Re: [lustre-discuss] Problems moving an OSS from an old Lustre installation to a new one

has a new UUID, so it should be detected. Anyway, I would first shutdown the old MGS/MDS before I tried to write any more data to the new OST. -- Dr. Oliver Mangold System Analyst NEC Deutschland GmbH HPC Division Raiffeisenstraße 14 70771 Leinfelden-Echterdingen Germany Phone: +49 711 78055 13

Re: [lustre-discuss] How does one process write to multiple OSTs

On 02.07.2015 05:59, prakrati.agra...@shell.com wrote: Hi, I have two very basic doubts. 1. If I have only one process writing to multiple OSTs, is it still a parallel write or does it become sequential as only one process is writing? In principle it sh

Re: [lustre-discuss] lustre 2.5.4 release?

On 29.06.2015 02:28, Kurt Strosahl wrote: > Hello? > >I'm running lustre 2.5.3, and was wondering when the release would move to > lustre 2.5.4? As far as I know, the answer is never. Except if you have a subscription for a commercial branch. See: http://wiki.lustre.org/Retired_Release_Termin

Re: [Lustre-discuss] Virtual machines on Lustre

th little performance loss. -- Dr. Oliver Mangold System Analyst NEC Deutschland GmbH HPC Division Hessbrühlstraße 21b 70565 Stuttgart Germany Phone: +49 711 78055 13 Mail: oliver.mang...@emea.nec.com ___ Lustre-discuss mailing list Lustre-discuss@lists.lustre

Re: [Lustre-discuss] How do I downgrade from 2.5.0 to 2.1.6?

On 08.01.2014 16:35, Drokin, Oleg wrote: > On Jan 8, 2014, at 10:15 AM, Oliver Mangold wrote: >>> Is this some sort of kerberos enabled deployment? >> No nothing like that. Even group upcall is disabled. > There's all this sptlrpc chatter coming out from somewhere that s

Re: [Lustre-discuss] How do I downgrade from 2.5.0 to 2.1.6?

efer 2.1.6 because we know it works. Is this some sort of kerberos enabled deployment? No nothing like that. Even group upcall is disabled. -- Dr. Oliver Mangold System Analyst NEC Deutschland GmbH HPC Division Hessbrühlstraße 21b 70565 Stuttgart Germany Phone: +49 711 78055 13 Mail: o

[Lustre-discuss] How do I downgrade from 2.5.0 to 2.1.6?

o_mount+0x2d2/0x8d0 [] ? sys_mount+0x90/0xe0 [] ? system_call_fastpath+0x16/0x1b -- Dr. Oliver Mangold System Analyst NEC Deutschland GmbH HPC Division Hessbrühlstraße 21b 70565 Stuttgart Germany Phone: +49 711 78055 13 Mail: oliver.mang...@emea.nec.com _