This is macOS Catalina (10.15.7) on a Mac Pro (late 2013).
I have had a RAID 1 (mirrored) drive for many years, implemented via Disk Utility and a La Cie Thunderbolt enclosure with two SATA drives (JBOD). One drive died and I replaced it; it took ~12 hours to rebuild the RAID on the new drive (as expected). Now, 12 hours later, different Apple tools give inconsistent results (disk4s2 is the new one):
Disk Utility (screenshot)

Disk Utility has had disk4s2 "Rebuilding 0.0%" for over 12 hours, while diskutil has shown it "Online" over the same period.
Which status is the correct one?
BTW there is a second problem: I was never notified that the drive had failed, I just happened to notice it when using Disk Utility for something else. I reported that as a bug to Apple.
I have had a RAID 1 (mirrored) drive for many years, implemented via Disk Utility and a La Cie Thunderbolt enclosure with two SATA drives (JBOD). One drive died and I replaced it; it took ~12 hours to rebuild the RAID on the new drive (as expected). Now, 12 hours later, different Apple tools give inconsistent results (disk4s2 is the new one):
Code:
$ diskutil appleRAID list
# DevNode UUID Status Size
-------------------------------------------------------------------------------
0 disk3s2 42EFAB34-0442-460F-A79F-566FA1752FE7 Online 2999999987712
1 disk4s2 63595AAD-824E-4C4A-A486-7FD91368D2AC Online 2999999987712
Disk Utility (screenshot)

Disk Utility has had disk4s2 "Rebuilding 0.0%" for over 12 hours, while diskutil has shown it "Online" over the same period.
Which status is the correct one?
BTW there is a second problem: I was never notified that the drive had failed, I just happened to notice it when using Disk Utility for something else. I reported that as a bug to Apple.