zpool mirror resilvering: always all or sometimes incremental?
From Winston@21:1/5 to All on Wed Sep 4 22:47:32 2024
Suppose one has a ZFS/zpool mirror.
One of the duplicates is detached from the mirror.
At a later time, it's re-attached to the same mirror, causing
re-silvering. Assume much of the content in the pool hasn't
changed between the detach and attach times.
Will re-silvering do some sort of incremental update, or always
copy everything?