[lustre-discuss] The safe path for upgrading servers from 2.5.3 to 2.12.x

[Nguyen Viet Cuong]

Hi Hsieh,

Thank for your comprehensive reply.

I will make a testbed system and try to upgrade servers directly.

Best regards,
Nguyen Viet Cuong


On Tue, Dec 1, 2020 at 1:01 PM Tung-Han Hsieh <thhsieh at twcp1.phys.ntu.edu.tw>
wrote:

> Dear Nguyen,
>
> Usually the upgrade procedure is the following:
>
> 1. Shutdown the Lustre file system completely.
>    (umount all the clients and servers)
>
> 2. In all the clients and servers, install the new version of Lustre
>    software. If your servers are Lustre with ldiskfs backend, please
>    install the recommand version of e2fsprogs package.
>    (see https://www.lustre.org/download/)
>
> 3. In all the servers and clients, unload the Lustre modules by:
>
>         lustre_rmmod
>
>    Or you can reboot these machines instead.
>
> 4. In each of the servers, run the following command to upgrade:
>
>         tunefs.lustre --writeconf /dev/<device_name>
>
>    Note that you have to do it for all the MGS / MDT / OST.
>
> 5. When running tunefs.lustre, it may prompt you to turn on some options
>    of the ldiskfs file system of corresponding device using the e2fsprogs
>    utilities. Just follow the indications.
>
> 6. Then the upgrade is completed. You can try to restart the Lustre file
>    system.
>
> I used to upgrade from version 2.5.X to 2.10.X and 2.12.X directly.
> Everything looks fine to me.
>
> Cheers,
>
> T.H.Hsieh
>
>
> On Mon, Nov 30, 2020 at 11:17:03PM +0700, Nguyen Viet Cuong wrote:
> > Hi there,
> >
> > Can anyone advise me the safe way to upgrade Lustre server from 2.5.3 to
> > 2.10.x or 2.12.x? I am running 2.5.3 on CentOS 6.5 with a FDR card. I now
> > have to upgrade the card to EDR or HDR.
> >
> > And, is there anyone successfully connecting servers with the mix of EDR
> > and HDR200? And how?
> >
> > Best regards,
> > Nguyen Viet Cuong
>
> > _______________________________________________
> > lustre-discuss mailing list
> > lustre-discuss at lists.lustre.org
> > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
>
>
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