Update README.md to specify NFS version is v4

Attempting to use longhorn with NFSv3 for backuip causes errors related to rpc.statd, which is not managed by longhorn processes.  Longhorn works properly with NFSv4 servers only.

Signed-off-by: Douglas Mayle <dmayle@dmayle.com>
This commit is contained in:
dmayle 2020-05-28 16:00:43 +02:00 committed by Sheng Yang
parent 809578d983
commit 5f775a7488

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@ -16,7 +16,7 @@ Longhorn implements distributed block storage using containers and microservices
1. Enterprise-grade distributed storage with no single point of failure
2. Incremental snapshot of block storage
3. Backup to secondary storage (NFS or S3-compatible object storage) built on efficient change block detection
3. Backup to secondary storage (NFSv4 or S3-compatible object storage) built on efficient change block detection
4. Recurring snapshot and backup
5. Automated non-disruptive upgrade. You can upgrade the entire Longhorn software stack without disrupting running volumes!
6. Intuitive GUI dashboard