So I got the raid1 array running on the RPI4. Today, I tried to add a sub directory to the array. Apparently something bad happened and one of the disks disappeared. When this happened there was some kind of major upset, as the OS stopped functioning, like it no longer knew where commands were located. sudo, stopped working. I could type in commands via ssh and see the characters, but the command interpreter didn't function correctly. I got a bash message saying it couldn't find the command. Could not establish another ssh session with the RPI. At that point, I pulled the power.
Upon a normal reboot, I find sdb is missing. md0 is still intact with just sdc1. I'm not sure how mkdir would cause this, but... $ sudo mdadm --detaill /dev/md0 states there are 2 RAID devices, but 1 total devices. 1 Active device, 1 working device, 0 failed devices, 0 spare devices. Disk0 state is removed, and Disk1 state is active sync /dev/sdc1 Assuming I can get sdb back, how do I get it back in the array? Just $ sudo mdadm --manage /dev/md0 --add /dev/sdb1 ? Is there a way with UUID's? Weird that the NVME disk sdb has just disappeared. Even after a reboot it isn't present, even though the idiot light is on. fdisk doesn't show it. parted allows me to select it but print shows info on sda? parted will select and print data on sdc. Is there anything that can be done to 'rescue' the nvme disk sdb? _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
