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

[Mark Ito]

Units are kilobytes...

On 2/24/20 10:38 PM, Mark Ito wrote:
>
> Folks,
>
> I made a listing of the 5,000 largest directories on 
> /volatile/halld_old, inclusive of subdirectories. Find it at
>
> https://halldweb.jlab.org/disk_management/volatile_halld_old.txt
>
> You might want to grep it for your username if you are wondering if 
> you have any files at risk.
>
>   -- Mark
>
> On 2/24/20 5:50 PM, Mark Ito wrote:
>>
>> 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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