<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span class="gmail-">> from what i read now i should have used mdadm --grow. but i enlarged the<br>
> partitions. then neither grub nor linux could find the array. the<br>
> enlarged partitions were fine but the raid1 array had vanished.<br>
<br>
</span>I see you generally insist on playing the dangerous game of learning on<br>
"production" setups, as in, you try your experiments on hardware with data<br>
that you care about.<br></blockquote><div><br></div><div>you make unkind assumptions. the box at issue already failed. spurious reboots. all data was both fully backed up and migrated to working servers as a matter of standard op procedure. i'm about trying to diagnose it. i wanted to create a diagnostics partition so the manufacturer diagnostics could write a progress log that was fetchable even after a spurious reboot. if the box died further it would be no real loss, but for both my convenience and learning i tried to do what was needed without killing the OS, and succeeded.</div></div></div></div>