Action required: update upspinserver-gcp

[Andrew Gerrand]

If you're not using upspinserver-gcp you can stop reading now.

We just committed a fix for a significant bug in Upspin's abstraction layer for talking to Google Cloud Storage. The bug was that, under certain conditions, an object could be reported as successfully written to cloud storage, but its contents would be empty.

Users of upspinserver-gcp should update to the latest version:

  $ go get -u -d gcp.upspin.io/cmd/upspinserver-gcp

Build it for the target os/architecture (linux/amd64 in this example):

  $ GOOS=linux GOARCH=amd64 go build -o upspinserver gcp.upspin.io/cmd/upspinserver-gcp

And then re-deploy it to your server (stop the service, copy the upspinserver binary, run setcap if necessary, and start the service again).

To verify that all your data is intact you can just read it, as checksums are validated on read.

One simple way to read all the data in an Upspin tree is to use the 'upspin tar' command':

  $ upspin tar -v us...@example.com /dev/null

Apologies for the inconvenience.

Andrew