[Halld-offline] /volatile/halld moving to a new Lustre system
marki at jlab.org
Mon Feb 24 22:38:37 EST 2020
I made a listing of the 5,000 largest directories on
/volatile/halld_old, inclusive of subdirectories. Find it at
You might want to grep it for your username if you are wondering if you
have any files at risk.
On 2/24/20 5:50 PM, Mark Ito wrote:
> 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:
>> 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
>> Hall B is in the process of going through this now, FYI.
>> -- Mark
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