Date: Tue, 24 Apr 2018 17:46:57 +0200 From: =?ISO-8859-1?Q?Karli_Sj=F6berg?= <karli@inparadise.se> To: Rick Macklem <rmacklem@uoguelph.ca>, "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org> Subject: Re: pNFS server completed Message-ID: <7A931945-0783-48EF-8743-B7F7261E9343@inparadise.se> In-Reply-To: <YQBPR0101MB104267CADDD5EA9758B88EEFDD880@YQBPR0101MB1042.CANPRD01.PROD.OUTLOOK.COM> References: <YQBPR0101MB1042CB0BF460C68A908D9340DD8A0@YQBPR0101MB1042.CANPRD01.PROD.OUTLOOK.COM> , <1524471526.9560.51.camel@inparadise.se> <YQBPR0101MB104218411EF6ABD1B660DEBDDD890@YQBPR0101MB1042.CANPRD01.PROD.OUTLOOK.COM>, <1524550472.1130.10.camel@inparadise.se> <YQBPR0101MB104267CADDD5EA9758B88EEFDD880@YQBPR0101MB1042.CANPRD01.PROD.OUTLOOK.COM>
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Rick Macklem <rmacklem@uoguelph=2Eca> skrev: (24 april 2018 14:36:24 CEST) >Karli Sj=C3=B6berg wrote: >[stuff snipped] >>OK, I think I understand, thank you for the explanation! >> >>So you could say that this enhancement is more about the performance >>benifit of scaling out, rather than resiliance/tolerance? >Yes, although without the DS mirroring (which is optional and doesn't >have to >be done), you would go from one SPOF to N SPOFs=2E > >To be honest, this pNFS service will not be useful for many=2E Only >people who >need to scale out beyond the limits of one NFS server and find it more >convenient >that creating a second NFS server=2E > >Improving resiliance/tolerance for an NFS server is a separate topic >(and would >apply to the MDS of this pNFS service as well)=2E >I don't have any expertise w=2Er=2Et=2E this, but something like HA (whic= h I >just learned >about from the email thread) might be appropriate=2E If you can build a >storage >subsystem with internal redundancy (raid at the drive level) and then >have >two servers "attached" to the storage subsystem so that it can fail >over >from the 1st to 2nd server, that would be a good start=2E >With that, you would just need to have something that would tell the >nfs >servers to start/stop when the HA failover happens, I think? >This is a really interesting problem, but not one for me=2E Of course if >someone >gets to the point where it needs an nfsd tweak to make the fail over >work, I >could help with that=2E > >Thanks for your interest, rick And thank you for working on this! /K --=20 Skickat fr=C3=A5n min Android-enhet med K-9 Mail=2E Urs=C3=A4kta min f=C3= =A5ordighet=2E
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