Pure Storage FlashBlade is an enterprise object storage platform that
provides S3-compatible APIs. This change adds FlashBlade as a new
provider option in the S3 backend.
Before this change, FlashBlade users had to use the "Other" provider
with manual configuration of various compatibility flags. This often
resulted in suboptimal performance due to conservative default settings.
After this change, users can select the "FlashBlade" S3 provider and
get an optimal configuration:
- ListObjectsV2 enabled for better performance
- AWS-compatible multipart ETags for reliable transfers
- Proper handling of "AlreadyOwnedByYou" bucket creation responses
- Path-style URLs by default (virtual-host style with DNS setup)
- Unsigned payloads to ensure compatibility with all rclone features
FlashBlade supports modern S3 features including trailer checksum
algorithms (SHA256, CRC32, CRC32C), object versioning, and lifecycle
management.
Provider settings were verified by testing against a FlashBlade//E
system running Purity//FB 4.5.7.
Documentation and test configurations are included.
Integration test results:
```
go test -v -fast-list -remote TestS3FlashBlade:
PASS
ok github.com/rclone/rclone/backend/s3 232.444s
```
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