[gpfsug-discuss] Best way to migrate data : mmfind ... mmxcp
Marc A Kaplan
makaplan at us.ibm.com
Mon Oct 22 22:15:17 BST 2018
Just copy the extra attributes and ACL copy immediately after the cp. The
window will be small, and if you think about it, the window of
vulnerability is going to be there with a hacked rsync anyhow. There
need not be any additional "passes". Once you put it into a single
script, you have "one tool".
From: Sven Oehme <oehmes at gmail.com>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date: 10/22/2018 04:33 PM
Subject: Re: [gpfsug-discuss] Best way to migrate data : mmfind ...
mmxcp
Sent by: gpfsug-discuss-bounces at spectrumscale.org
Marc,
The issue with that is that you need multiple passes and things change in
between, it also significant increases migration times. You will always
miss something or you need to manually correct. The right thing is to have
1 tool that takes care of both, the bulk transfer and the additional
attributes.
Sven
From: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of Marc A
Kaplan <makaplan at us.ibm.com>
Reply-To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date: Monday, October 22, 2018 at 1:09 PM
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] Best way to migrate data : mmfind ... mmxcp
Rather than hack rsync or cp ... I proposed a smallish utility that would
copy those extended attributes and ACLs that cp -a just skips over.
This can be done using the documented GPFS APIs that were designed for
backup and restore of files.
SMOP and then add it as an option to samples/ilm/mmxcp
Sorry I haven't gotten around to doing this ... Seems like a modest sized
project... Avoids boiling the ocean and reinventing or hacking rsync.
-- marc K
_______________________________________________ gpfsug-discuss mailing
list gpfsug-discuss at spectrumscale.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss
_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20181022/1d364b43/attachment-0002.htm>
More information about the gpfsug-discuss
mailing list