If rsync isn't doing the networking you are better off with cp -au instead of rsync. It should be significantly faster and you can do a final pass with rsync to get any files that got truncated by a ^C (cp can only skip files that are newer not files that are not different and a truncated file will be newer since it never got back-dated).
> rsync -av --no-perms --no-owner --no-group /old/storage/dir
> /new/storage/directory/dir
Note that rsync treats a trailing / on the source parameter differently.
If you did rsync ... /old/storage/dir /new/storage/dir then you made
/new/storage/dir/dir and duplicated everything into it. The correct
syntax is rsync ... /old/storage/dir/ /new/storage/dir OR rsync ...
/old/storage/dir /new/storage
On 10/18/2017 05:00 PM, Herb Burnswell via rsync wrote:
> All,
>
> I am seeding a new storage environment (Glusterfs on XFS) and would like
> to gather advise on best practices. This data is primarily all media
> data, so not good with compression.
>
> I currently have made one pass on at 20TB directory tree into the
> environment as:
>
> - nfs mount from old storage to new storage
> - rsync -av /old/storage/* /new/storage/directory
>
> Once the directories and files were on the new storage, I did:
>
> - chown -R root:root
> - chmod -R 774
>
> I'll need to do a couple more sync's prior to full cut over.
>
> Questions regarding performance:
>
> - Does anyone have any suggestions on how to achieve the best performace
> (speed)?
>
> - Is a local NFS mount from old storage to new storage the best
> option? If so are there specific mount options that should be used?
> - Any specific rsync flags (I've tested with and without 'z' flag
> and it does not help with this data) or best practices?
>
> Questions regarding rsync behavior:
>
> - When I test individual directory resync's within the initial ingest
> tree, a command such as:
>
> rsync -av --no-perms --no-owner --no-group /old/storage/dir
> /new/storage/directory/dir
>
> Lists all of the directories under 'dir' in the shell. But if I rerun
> the command immediately thereafter, nothing is listed in the shell.
> Where is this 'metadata' of what is 'already on the destination'
> stored? Is it only stored while the shell is open? I want to set up a
> cron job moving forward and would like to make sure all info is available.
>
> Any guidance is greatly appreciated.
>
> Thanks in advance,
>
> HB
>
>
>
>
--
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Systems Administrator Internet:
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