[Info-vax] File Systems

[David Froble]

clairgrant71 at gmail.com wrote:
> On Wednesday, March 4, 2015 at 10:01:50 AM UTC-5, Stephen Hoffman wrote:
>> On 2015-03-04 11:45:00 +0000, Paul Sture said:
>>
>>> Hmm. Both Lustre and Cassandra are Java based and when the OpenJDK wiki 
>>> concentrates so heavily on licensing issues I want to run a mile.
>> Lustre is GPL2, which makes its inclusion into a closed-source OpenVMS 
>> configuration comparatively unlikely.
>>
>> ZFS, if VSI decides to license that from Oracle, might work.  ZFS and 
>> various other choices would likely require some changes for application 
>> compatibility and for clustering -- the caches would have to be 
>> coordinated across cluster members -- and getting a wholly new file 
>> system to operate in the XQP environment and with the existing DCL 
>> commands and system services would involve some work.
>>
>> It's certainly conceivable that they'd extend fields in ODS-5.
>>
>> VSI might also decide to implement disk partitioning.
>>
>> The addressing change effects code throughout the VMS kernel and in VSI 
>> and third-party application code.  Code that uses a longword block 
>> count or a longword block address, such as device drivers, 
>> disk-reporting tools and likely including SNMP, and potentially even in 
>> foreign file systems which would want or need to address these larger 
>> volumes.
>>
>> What VSI might decide here, we shall learn.
>>
>>
>>
>>
>> -- 
>> Pure Personal Opinion | HoffmanLabs LLC
> 
> This is a new file system. We started the work before VMS was sent to India. We intend to pick up where we left off.

When can we get some details on the new file system?

Will it replace ODS-2 and ODS-5, or will it be in addition to them?

I have a database product that does QIOs to access (read and write) from 
1 to 127 blocks.  Will there be incompatibilities?  It would be good to 
get as much of a head start if needed as I can.