Hi,

I am developing a new nbdkit plugin, and occasionally I am getting errors like this:

nbdkit: s3backer.8: error: write reply: NBD_CMD_WRITE: Broken pipe
nbdkit: s3backer.15: error: write reply: NBD_CMD_WRITE: Broken pipe

(where "s3backer" is the plugin name).

I am not sure what to make of these. Can someone advise?

Looking at the nbdkit source, it looks to me like these are generated when there is a problem sending a reply to the nbd client. On the other hand, I am using the standard 'nbd-client' program through a Unix socket, so I'd think this should not result in errors...?

Best,

-Nikolaus