status: One or more devices has experienced an error resulting in data
corruption. Applications may be affected.
action: Restore the file in question if possible. Otherwise restore the
entire pool from backup.
I have a physical machine that runs a ZFS pool of six drives. After one drive developed SMART warnings, I removed it, replaced it with a larger drive, and then ran the zpool replace command to resilver the pool.
As the resilvering started, I noted that it was going pretty slow. There...