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List:       lustre-discuss
Subject:    [lustre-discuss] zfs ? Re: interrupted tar archive of an mdt ldiskfs
From:       aik () fnal ! gov (Alexander I Kulyavtsev)
Date:       2015-07-13 23:34:10
Message-ID: E2B0758E-782B-4F32-82E9-2D8EDE222566 () fnal ! gov
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What about zfs MDT backup/restore in lustre 2.5.3?

I took a look at the referenced manual pages - it tells nothing about zfs MDT backup. \
 I believed we just use zfs send/receive in this case. Do I need to fix OI / FID \
mapping?  Shall I run offline lfsck and wait???

Alex.


On Jul 13, 2015, at 2:09 PM, Henwood, Richard <richard.henwood at intel.com> wrote:

> On Mon, 2015-07-13 at 11:20 -0700, John White wrote:
> > Yea, I?m benchmarking rsync right now, it doesn?t seem much faster than the \
> > initial tar was at all. 
> > Can you elaborate on the risk on 2.x systems?..  
> > 
> 
> Backing up a 2.x MDT (or OST) is described in manual for:
> 
> file level (MDT only supported since 2.3):
> https://build.hpdd.intel.com/job/lustre-manual/lastSuccessfulBuild/artifact/lustre_manual.xhtml#dbdoclet.50438207_21638
>  
> device level:
> https://build.hpdd.intel.com/job/lustre-manual/lastSuccessfulBuild/artifact/lustre_manual.xhtml#dbdoclet.50438207_71633
>  
> I, personally, think it does an OK job of describing the limitations of
> file and device backups - but there is always room for improvement:
> https://wiki.hpdd.intel.com/display/PUB/Making+changes+to+the+Lustre+Manual
> 
> cheers,
> Richard
> -- 
> Richard.Henwood at intel.com
> Tel: +1 512 410 9612
> Intel High Performance Data Division
> _______________________________________________
> lustre-discuss mailing list
> lustre-discuss at lists.lustre.org
> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org


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