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i have one problem.

I created RAID1 with two discs, then i simulated failure of one of the discs. It was sdb1. I restared the VM with one disc working in RAID array. Then i added new fresh disc to add to this array but i can't do that because i got error (mdadm: Cannot get array info for /dev/md127) The new disc is already formated. How to add that new disc, everything that i tried doesn't work.

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    Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. Commented May 30 at 16:24
  • What commands did you try at each step and what happened (including precise error messages)? Please add this to your question, formatting code as code with the {} button Commented May 30 at 21:38

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