Mechanism for representing system configuration changes as a series of objects writable to an object storage container

• US 10,423,497 B2
• Filed: 11/28/2017
• Issued: 09/24/2019
• Est. Priority Date: 11/28/2017
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Cilfone, Bart R., Frazier, Alan M., Tamborski, Patrick A., Kumar, Sanjaya
• Primary Examiner(s): Kudirka, Joseph R
• Application Number:
  US15/824,876
• Publication Number:
  US 20190166200A1
• Time in Patent Office: 665 Days
• CPC Class Codes: G06F 11/1076 Parity data used in redundant arrays of independent storages, e.g. in RAID systems
• CPC Class Codes: G06F 11/1458 Management of the backup or restore process
• CPC Class Codes: G06F 2201/80 Database-specific techniques
• CPC Class Codes: G06F 3/0605 by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/0619 in relation to data integrity, e.g. data losses, bit errors
• CPC Class Codes: G06F 3/0632 by initialisation or re-initialisation of storage systems
• CPC Class Codes: G06F 3/0659 Command handling arrangements, e.g. command buffers, queues, command scheduling
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]

Abstract

A method includes generating an entry for inclusion in a configuration queue regarding a configuration submission regarding DSN managed by a managing unit that uses a manager'"'"'s configuration database stored in a first database. The method further includes updating a first version of the configuration queue stored in first database and a second version of the configuration queue stored in a manager'"'"'s vault to include the entry. When the manager'"'"'s configuration database requires restoring, the method further includes copying a backup version of the manager'"'"'s configuration database to the first database to create an initially restored manager'"'"'s configuration database and establishing an association between the managing unit and the initially restored manager'"'"'s configuration database. When associated, the method further includes accessing the second version, identifying configuration changes not included in the initially restored manager'"'"'s configuration database, and updating the initially restored manager'"'"'s configuration database to include the identified configuration changes.

Claims

1. A method comprises:

generating, by a managing unit of a dispersed storage network (DSN), an entry for inclusion in a configuration queue regarding a configuration submission, wherein the configuration submission is regarding a configuration change to at least a portion of the DSN managed by the managing unit, wherein the managing unit uses a manager'"'"'s configuration database to facilitate managing of the at least a portion of the DSN, wherein the manager'"'"'s configuration database is stored in a first database, and wherein the first database is backed up to produce a backup version of the manager'"'"'s configuration database;

updating, by the managing unit, a first version of the configuration queue to include the entry, wherein the first version of the configuration queue is stored in the first database;

updating, by the managing unit, a second version of the configuration queue to include the entry, wherein the second version of the configuration queue is stored as a plurality of sets of encoded data slices in a manager'"'"'s vault within the DSN;

when the manager'"'"'s configuration database stored in the first database requires restoring;

copying, by a computing device of the DSN, the backup version of the manager'"'"'s configuration database to the first database to create an initially restored manager'"'"'s configuration database;

establishing, by the computing device, an association between the managing unit and the initially restored manager'"'"'s configuration database;

when the managing unit is associated with the initially restored manager'"'"'s configuration database;

accessing, by the computing device, the second version of the configuration queue from the manager'"'"'s vault;

identifying, by the computing device, configuration changes from a recovered version of the configuration queue that have not been included in the initially restored manager'"'"'s configuration database; and

updating, by the computing device, the initially restored manager'"'"'s configuration database to include the identified configuration changes to produce a restored manager'"'"'s configuration database.

2. The method of claim 1 further comprises:

copying, by the computing device, the backup version of the manager'"'"'s configuration database to the first database, wherein the computing device is one or more of a trusted computing device and the managing unit.

3. The method of claim 1 further comprises:

when the manager'"'"'s configuration database is restored, returning, by the computing device, the managing unit to an online state, wherein the computing device is one or more of a trusted computing device and the managing unit.

4. The method of claim 1, wherein the configuration submission comprises:

configuration metadata that includes one or more of a timestamp, a request identifier (ID), and identity of the party making the configuration change; and

a list of configuration requests regarding execution of the configuration change.

5. The method of claim 1, wherein the establishing the association between the managing unit and the initially restored manager'"'"'s configuration database comprises:

receiving, by the computing device, an indication from the initially restored manager'"'"'s configuration database that the managing unit is the managing unit of record and that the managing unit of record includes the manager'"'"'s vault; and

generating, by the computing device, a certificate allowing the initially restored manager'"'"'s configuration database permission to access the manager'"'"'s vault.

6. The method of claim 1 further comprises:

storing, by the managing unit, the manager'"'"'s configuration database in the first database in a format supported by the first database, wherein the first database includes attributes for fast, reliable, and a non-dispersed error encoded storage of data.

7. The method of claim 1 further comprises:

storing, by the managing unit, the backup version of the manager'"'"'s configuration database in DSN memory of the DSN as a plurality of sets of encoded backup slices.

8. A computer readable storage device comprises:

a first memory element that stores operational instructions that, when executed by a managing unit of a dispersed storage network (DSN), causes the managing unit to;

generate an entry for inclusion in a configuration queue regarding a configuration submission, wherein the configuration submission is regarding a configuration change to at least a portion of the DSN managed by the managing unit, wherein the managing unit uses a manager'"'"'s configuration database to facilitate managing of the at least a portion of the DSN, wherein the manager'"'"'s configuration database is stored in a first database, and wherein the first database is backed up to produce a backup version of the manager'"'"'s configuration database;

update a first version of the configuration queue to include the entry, wherein the first version of the configuration queue is stored in the first database;

update a second version of the configuration queue to include the entry, wherein the second version of the configuration queue is stored as a plurality of sets of encoded data slices in a manager'"'"'s vault within the DSN;

a second memory element that stores operational instructions that, when executed by a computing device of the DSN, causes the computing device to;

when the manager'"'"'s configuration database stored in the first database requires restoring;

copy the backup version of the manager'"'"'s configuration database to the first database to create an initially restored manager'"'"'s configuration database;

establish an association between the managing unit and the initially restored manager'"'"'s configuration database;

when the managing unit is associated with the initially restored manager'"'"'s configuration database;

access the second version of the configuration queue from the manager'"'"'s vault;

identify configuration changes from a recovered version of the configuration queue that have not been included in the initially restored manager'"'"'s configuration database; and

update the initially restored manager'"'"'s configuration database to include the identified configuration changes to produce a restored manager'"'"'s configuration database.

9. The computer readable storage device of claim 8, wherein the second memory element further stores operational instructions that, when executed by the computing device, causes the computing device to:

copy the backup version of the manager'"'"'s configuration database to the first database, wherein the computing device is one or more of a trusted computing device and the managing unit.

10. The computer readable storage device of claim 8, wherein the second memory element further stores operational instructions that, when executed by the computing device, causes the computing device to:

when the manager'"'"'s configuration database is restored, return the managing unit to an online state, wherein the computing device is one or more of a trusted computing device and the managing unit.

11. The computer readable storage device of claim 8, wherein the configuration submission comprises:

configuration metadata that includes one or more of a timestamp, a request identifier (ID), and identity of the party making the configuration change; and

a list of configuration requests regarding execution of the configuration change.

12. The computer readable storage device of claim 8, wherein the second memory element further stores operational instructions that, when executed by the computing device, causes the computing device to establish the association between the managing unit and the initially restored manager'"'"'s configuration database by:

receiving an indication from the initially restored manager'"'"'s configuration database that the managing unit is the managing unit of record and that the managing unit of record includes the manager'"'"'s vault; and

generating a certificate allowing the initially restored manager'"'"'s configuration database permission to access the manager'"'"'s vault.

13. The computer readable storage device of claim 8, wherein the first memory element further stores operational instructions that, when executed by the managing unit, causes the managing unit to:

storing the manager'"'"'s configuration database in the first database in a format supported by the first database, wherein the first database includes attributes for fast, reliable, and a non-dispersed error encoded storage of data.

14. The computer readable storage device of claim 8, wherein the first memory element further stores operational instructions that, when executed by the managing unit, causes the managing unit to:

store the backup version of the manager'"'"'s configuration database in DSN memory of the DSN as a plurality of sets of encoded backup slices.