[lustre-discuss] Questions about migrate OSTs from ldiskfs to zfs

2016-02-23 Thread Fernando Perez
Hi all. We have a 230 TB small lustre system. We are using lustre 2.4.1 with zfs 0.6.2 installed in the OSSs. The lustre architecture is the following: 1 MDS +1 MDT in the same server + 3 OSS with 15 ldiskfs OSTs (external disks some with fibre controllers and SAS disks and others Coraid aoe

Re: [lustre-discuss] Questions about migrate OSTs from ldiskfs to zfs

2016-02-26 Thread Dilger, Andreas
On Feb 23, 2016, at 05:24, Fernando Perez wrote: > > Hi all. > > We have a 230 TB small lustre system. We are using lustre 2.4.1 with zfs > 0.6.2 installed in the OSSs. The lustre architecture is the following: > > 1 MDS +1 MDT in the same server + 3 OSS with 15 ldiskfs OSTs (external disks

Re: [lustre-discuss] Questions about migrate OSTs from ldiskfs to zfs

2016-02-29 Thread Fernando Pérez
Thanks Andreas. I will follow your recommendations. Regards. = Fernando Pérez Institut de Ciències del Mar (CMIMA-CSIC) Departament Oceanografía Física i Tecnològica Passeig Marítim de la Barceloneta,37-49 08003 Barcelona Phone: (+34) 93 230 96 35

Re: [lustre-discuss] Questions about migrate OSTs from ldiskfs to zfs

2016-03-01 Thread Alexander I Kulyavtsev
Please see inlined. On Feb 26, 2016, at 6:36 PM, Dilger, Andreas mailto:andreas.dil...@intel.com>> wrote: On Feb 23, 2016, at 05:24, Fernando Perez mailto:fpe...@icm.csic.es>> wrote: Hi all. ... snip... - Dou you recommend to do a lustre update before replace the OSTs by the new zfs OSTs? L

Re: [lustre-discuss] Questions about migrate OSTs from ldiskfs to zfs

2016-03-01 Thread Christopher J. Morrone
On 03/01/2016 09:18 AM, Alexander I Kulyavtsev wrote: > is tag 2.5.3.90 considered stable? No. Generally speaking you do not want to use anything with number 50 or greater for the fourth number unless you are helping out with testing during the development process. 2.5.3 was the last official r

Re: [lustre-discuss] Questions about migrate OSTs from ldiskfs to zfs

2016-03-01 Thread Drokin, Oleg
On Mar 1, 2016, at 4:14 PM, Christopher J. Morrone wrote: > On 03/01/2016 09:18 AM, Alexander I Kulyavtsev wrote: > >> is tag 2.5.3.90 considered stable? > > No. Generally speaking you do not want to use anything with number 50 > or greater for the fourth number unless you are helping out with

Re: [lustre-discuss] Questions about migrate OSTs from ldiskfs to zfs

2016-03-01 Thread Dilger, Andreas
On Mar 2, 2016, at 01:18, Alexander I Kulyavtsev mailto:a...@fnal.gov>> wrote: Please see inlined. On Feb 26, 2016, at 6:36 PM, Dilger, Andreas mailto:andreas.dil...@intel.com>> wrote: On Feb 23, 2016, at 05:24, Fernando Perez mailto:fpe...@icm.csic.es>> wrote: Hi all. ... snip... - Dou you

Re: [lustre-discuss] Questions about migrate OSTs from ldiskfs to zfs

2016-03-01 Thread Christopher J. Morrone
On 03/01/2016 01:44 PM, Drokin, Oleg wrote: > > On Mar 1, 2016, at 4:14 PM, Christopher J. Morrone wrote: > >> On 03/01/2016 09:18 AM, Alexander I Kulyavtsev wrote: >> >>> is tag 2.5.3.90 considered stable? >> >> No. Generally speaking you do not want to use anything with number 50 >> or greater

Re: [lustre-discuss] Questions about migrate OSTs from ldiskfs to zfs

2016-03-01 Thread Alexander I Kulyavtsev
Is there way to run 2.5.3-llnl server with 1.8.9 client? Or, do you have a hint what can be a problem causing LBUG when mounting two lustres (old 1.8.8 and new 2.5.3) from 1.8.9 client? No ldiskfs on new system, ZFS only. I'm copying my previous posting at the end of the mail for specific error.