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My raid is functioning fine, but I accidentally added a USB drive to what is a sata RAID1 with mdadm.

I noticed this pretty quickly and removed the drive from raid, it was synced about half a percent. Its can't be mounted as xfs because the partition table was overwritten and I'm trying to recover whatever data I can.

Using blkid, the original type was xfs, but it's now a type of linux_raid_member with a label of the raid name and a UUID_SUB.

I tried using parted with set 1 raid off but that didn't help. Any way I can recreate the old partition table to get any possible data off it? Or at least change the type back to xfs? I can see a majority of the files with xfs_check

Both the raid drives and the USB drive have just one gpt partition with xfs and a block size of 512.

loserspearl
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  • restore from backup – djdomi Sep 24 '22 at 19:03
  • Restoring partition table doesnt help you because large part of filesystem is overwritten. You only may scan entire partition with xfs aware soft to maybe get some files. – gapsf Sep 24 '22 at 19:04
  • I don't have a backup of the partition table. Not much was overwritten. What xfs software can help me retrieve some files? – loserspearl Sep 24 '22 at 19:47
  • xfs_repair worked, though it's not easy identifying folders by their ID instead of their path/name – loserspearl Sep 26 '22 at 05:45

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