dfs

On Fri, Jul 1, 2011 at 10:33 AM, Musayev, Ilya <[email protected]> wrote:

>  Its been a while since I posted here J****
>
> ** **
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> I have an interesting problem where I need to rsync an nfs mount to another
> server in a different datacenter continuously with least time lapse
> possible. Needless to say, NFS server is an appliance that currently has
> issues with replication and I have no root access (i.e. EMC Cellera). The
> share contains 20 million files – so you can imagine rsync will take a bit
> of time to analyze and build a file list – it took 8 hours previously + 24
> hours on actual sync.****
>
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> My goal is to speed up the transfers going forward on changed files. Setup
> is as follows:****
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> Source: host1:/nfs_mount****
>
> Destination: host2:/nfs_mount****
>
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>
> Possible solutions I’ve seen thus far was rsync and inotify. Rsync is
> tricky thing when you have 20m files and analyzing all files that have
> changed via cron, is not what I think is ideal solution. Inotify – I have
> not yet tried, but it sounds like it only supports local file systems
> (ext3+), though I do see some posts that it may support nfs v4 mounts. ***
> *
>
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> What would you recommend to keep the 2 shares in sync with least time lapse
> (open source realm)? Has anyone had success with inotify on nfs share?****
>
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> Looking forward to your comments,****
>
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>
> Thanks****
>
> -ilya****
>
> ** **
>
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