Date: Fri, 1 Jul 2016 17:02:25 +0200 From: Ben RUBSON <ben.rubson@gmail.com> To: freebsd-fs@freebsd.org Subject: Re: HAST + ZFS + NFS + CARP Message-ID: <E66B4573-9884-4266-9538-266B91B48E3E@gmail.com> In-Reply-To: <4d13f123-de18-693a-f98b-d02c8864f02e@internetx.com> References: <20160630163541.GC5695@mordor.lan> <50BF1AEF-3ECC-4C30-B8E1-678E02735BB5@gmail.com> <20160701084717.GE5695@mordor.lan> <47c7e1a5-6ae8-689c-9c2d-bb92f659ea43@internetx.com> <20160701101524.GF5695@mordor.lan> <f74627e3-604e-da71-c024-7e4e71ff36cb@internetx.com> <20160701105735.GG5695@mordor.lan> <3d8c7c89-b24e-9810-f3c2-11ec1e15c948@internetx.com> <93E50E6B-8248-43B5-BE94-D94D53050E06@getsomewhere.net> <bbaf14e2-4ec6-545c-ba67-a1084100b05c@internetx.com> <20160701143917.GB41276@mordor.lan> <01b8a61e-739e-c41e-45bc-a84af0a9d8ab@internetx.com> <4d13f123-de18-693a-f98b-d02c8864f02e@internetx.com>
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I think what we miss is some kind of this : http://milek.blogspot.fr/2007/03/zfs-online-replication.html http://www.compnect.net/?p=16461 Online replication built in ZFS would be awesome. > On 01 Jul 2016, at 16:44, InterNetX - Juergen Gotteswinter <jg@internetx.com> wrote: > > dont get me wrong, what i try to say is that imho you are trying to > reach something which looks great until something goes wrong. > > keep it simple, stupid simple, without much moving parts and avoid > automagic voodoo wherever possible. > > Am 01.07.2016 um 16:41 schrieb InterNetX - Juergen Gotteswinter: >> Am 01.07.2016 um 16:39 schrieb Julien Cigar: >>> On Fri, Jul 01, 2016 at 03:44:36PM +0200, InterNetX - Juergen Gotteswinter wrote: >>>> >>>> >>>> Am 01.07.2016 um 15:18 schrieb Joe Love: >>>>> >>>>>> On Jul 1, 2016, at 6:09 AM, InterNetX - Juergen Gotteswinter <jg@internetx.com> wrote: >>>>>> >>>>>> Am 01.07.2016 um 12:57 schrieb Julien Cigar: >>>>>>> On Fri, Jul 01, 2016 at 12:18:39PM +0200, InterNetX - Juergen Gotteswinter wrote: >>>>>>> >>>>>>> of course I'll test everything properly :) I don't have the hardware yet >>>>>>> so ATM I'm just looking for all the possible "candidates", and I'm >>>>>>> aware that a redundant storage is not that easy to implement ... >>>>>>> >>>>>>> but what solutions do we have? It's either CARP + ZFS + (HAST|iSCSI), >>>>>>> either zfs send|ssh zfs receive as you suggest (but it's >>>>>>> not realtime), either a distributed FS (which I avoid like the plague..) >>>>>> >>>>>> zfs send/receive can be nearly realtime. >>>>>> >>>>>> external jbods with cross cabled sas + commercial cluster solution like >>>>>> rsf-1. anything else is a fragile construction which begs for desaster. >>>>> >>>>> This sounds similar to the CTL-HA code that went in last year, for which I haven’t seen any sort of how-to. The RSF-1 stuff sounds like it has more scaling options, though. Which it probably should, given its commercial operation. >>>> >>>> rsf is what pacemaker / heartbeat tries to be, judge me for linking >>>> whitepapers but in this case its not such evil marketing blah >>>> >>>> http://www.high-availability.com/wp-content/uploads/2013/01/RSF-1-HA-PLUGIN-ZFS-STORAGE-CLUSTER.pdf >>>> >>>> >>>> @ Julien >>>> >>>> seems like you take availability really serious, so i guess you also got >>>> plans how to accomplish network problems like dead switches, flaky >>>> cables and so on. >>>> >>>> like using multiple network cards in the boxes, cross cabling between >>>> the hosts (rs232 and ethernet of course, using proved reliable network >>>> switches in a stacked configuration for example cisco 3750 stacked). not >>>> to forget redundant power feeds to redundant power supplies. >>> >>> the only thing that is not redundant (yet?) is our switch, an HP Pro >>> Curve 2530-24G) .. it's the next step :) >> >> Arubas, okay, a quick view in the spec sheet does not seem to list >> stacking option. >> >> what about power? >> >>> >>>> >>>> if not, i whould start again from scratch. >>>> >>>>> >>>>> -Joe >>>>> >>>>> _______________________________________________ >>>>> freebsd-fs@freebsd.org mailing list >>>>> https://lists.freebsd.org/mailman/listinfo/freebsd-fs >>>>> To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >>>>> >>>> _______________________________________________ >>>> freebsd-fs@freebsd.org mailing list >>>> https://lists.freebsd.org/mailman/listinfo/freebsd-fs >>>> To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >>> >> >> _______________________________________________ >> freebsd-fs@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-fs >> To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >> > _______________________________________________ > freebsd-fs@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"
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