> On Apr 26, 2022, at 10:10 AM, Eugene M. Zheganin <[email protected]> wrote: > > Hello, > > recently I found another server that was running 12.x and became unbootable > because of the famous "cannot read MOS/all block copies unavailable/etc" > gptzfsboot message which can be randomly displayed when boot blocks migrate > beyond 1st Tb on a large root pool.
Is this documented somewhere? I’m pretty sure I have a number of servers that fit this description. How do boot blocks “migrate”? Charles
