I need to replace the re-badged LSI 9220-8i (probably really a Chinese counterfeit) that handles the zfs mirrors on my server-of-all-work since it has shed a port and a second one is flakey. But I'm out of sata ports on the server, and so must do the pre-replace backup across my lan. I'm using
So I
cp
because I've never used dump
and don't want to experiment on this task.So I
nfs
-mounted the source filesystems and started the copy. I'm watching progress using df
and notice that the free block count is going down both on the destination drive AND on the source, which scared me. Why would a copy be consuming blocks on the nfs
-mounted source?