[Halld-offline] /volatile/halld moving to a new Lustre system

[Mark Ito]

Folks,

A reminder: all files on /volatile/halld_old will be deleted in nine 
days, on Wednesday, March 4. See item 4 in the procedure below.

There is still quite a lot of data in /volatile/halld_old. People should 
check that they do not have anything important there.

   -- Mark

On 1/23/20 6:20 PM, Mark Ito wrote:
>
> Gluons,
>
> Our volatile disk space is moving to a newly purchased Lustre system. 
> I mentioned this at the last Software Meeting. In the end our space 
> will double from 70 TB to 140 TB. This will also give us independence 
> from LQCD Lustre.
>
> Recall that volatile is not backed up and files are subject to 
> deletion when it gets full 
> <https://scicomp.jlab.org/docs/volatile_disk_pool>, just as before.
>
> The transition will start on Tuesday, February 4. And it goes like 
> this (please note step 4):
>
>  1. /volatile/halld will be renamed as /volatile/halld_old. All files
>     and directories will be preserved other than the change to the
>     name of the top level directory. Files can be read from and
>     written to the renamed location.
>  2. A new directory will appear on the new system named
>     /volatile/halld (what else?). It will be empty, no directories, no
>     files. This is our new volatile space.
>  3. We can now use the new space in any way we like. An example of a
>     likely use is to copy the contents of /volatile/halld_old/foo/bar
>     to /volatile/halld/foo/bar. Such actions will not happen
>     automatically. SciComp requests that we delete the contents of
>     /volatile/halld_old/foo/bar after such a copy is done, but
>     deletion is not required.
>  4. After a month, all files remaining on /volatile/halld_old will be
>     deleted.
>
> Hall B is in the process of going through this now, FYI.
>
>   -- Mark
>
>
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