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

[Mark Ito]

A reminder: files on /volatile/halld_old are scheduled for deletion 
tomorrow, Wednesday, March 4.

On 2/24/20 10:39 PM, Mark Ito wrote:
>
> 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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