Sounds like you need a block-level solution like NetApp's SnapMirror. I
don't think trying to synchronize this data from the OS layer is going
to be a very elegant or efficient solution.
Paul Krizak 7171 Southwest Pkwy MS B200.3A
MTS Systems Engineer Austin, TX 78735
Advanced Micro Devices Desk: (512) 602-8775
Linux/Unix Systems Engineering Cell: (512) 791-0686
Global IT Infrastructure Fax: (512) 602-0468
On 07/01/2011 07:33 AM, Musayev, Ilya wrote:
Its been a while since I posted here J
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.
My goal is to speed up the transfers going forward on changed files.
Setup is as follows:
Source: host1:/nfs_mount
Destination: host2:/nfs_mount
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.
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?
Looking forward to your comments,
Thanks
-ilya
_______________________________________________
rhelv5-list mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/rhelv5-list
