Add support for resizing PVs

[gnufied]

Feature Name

• Add support for resizing existing PVs
• Primary contact (assignee): Hemant Kumar( @gnufied)
• Responsible SIGs: storage-sig
• Design proposal link (community repo): Proposal for growing persistent volumes community#657
• Reviewer(s) - (for LGTM) recommend having 2+ reviewers: @saad-ali @jsafrane
• Approver (likely from SIG/area to which feature belongs): @jsafrane
• Feature target (which target equals to which milestone):
  • Alpha release target (x.y): 1.8
    • File system resizing and GCE, EBS, Cinder volume type support : 1.9
  • Beta release target (x.y): 1.11
  • Stable release target (x.y): 1.24

[duglin]

/cc @sandyamin123 @aniket-s-kulkarni

[idvoretskyi]

@gnufied can you update the feature description with the design proposal?

[gnufied]

Updated link to design proposal - kubernetes/community#657

[saad-ali]

This will not ship alpha until 1.8 at the earliest, moving out of 1.7 milestone

[gnufied]

@saad-ali I know that timeline is pretty tight and code freeze is looming. But I would like to do my best to make this an alpha feature for 1.7. Yes - there is a chance, we may fail, but I don't see any harm in trying.

So - please, can we move this back to 1.7 milestone? I was hoping to have a discussion about this today in sig but we ran out of time. I am planning to schedule a call tomorrow morning.

[saad-ali]

@saad-ali I know that timeline is pretty tight and code freeze is looming. But I would like to do my best to make this an alpha feature for 1.7. Yes - there is a chance, we may fail, but I don't see any harm in trying.

So - please, can we move this back to 1.7 milestone? I was hoping to have a discussion about this today in sig but we ran out of time. I am planning to schedule a call tomorrow morning.

I didn't mean to punt resize without your input @gnufied. Sorry about that. It just looked like there were a lot of big design questions, and I'd rather the team spend the time before 1.8 coding beings to close on those rather than rush the design and implementation. We can prioritize this higher for 1.8. Thanks for driving this!