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Disk failed and other removed of raid

us flag

I have "or I had :(" a raid 1 on my ubuntu.I had problems with a disk and I try to format this disk and rebuild the raid, but then, the system stop the rebuild syncronization about 51,2%. I tried change two disk of port, and then the raid not work. when I send mdadm, this show me the next message

sudo mdadm -D /dev/md0 /dev/md0: Version : 1.2 Creation Time : Fri Apr 10 18:00:03 2020 Raid Level : raid1 Used Dev Size : 18446744073709551615 Raid Devices : 2 Total Devices : 1 Persistence : Superblock is persistent

   Update Time : Wed Dec 14 03:17:40 2022
         State : active, FAILED, Not Started 
Active Devices : 0

Working Devices : 1 Failed Devices : 0 Spare Devices : 1

Consistency Policy : unknown

Number   Major   Minor   RaidDevice State
   -       0        0        0      removed
   -       0        0        1      removed

   -       8        0        0      spare rebuilding   /dev/sda

How to add the removed disk?

Thanks

Terrance avatar
id flag
Please add to your question the output of `cat /proc/mdstat`.
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