[Bug 203943] ext4 corruption after RAID6 degraded; e2fsck skips block checks and fails

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https://bugzilla.kernel.org/show_bug.cgi?id=203943

--- Comment #5 from Yann Ormanns (yann@xxxxxxxxxxx) ---
Thank you for your support, Ted. About one week before the RAID got degraded, I
created a full file-based backup, so at least I can expect minimal data loss -
I just would like to save the time it would take to copy ~22TB back :-)

Before filing a possible bug in the correct section for RAID, I'd like to
comprehend the steps you described. 
In fact e2fsck does not report inode numbers, only variables ("%$i", and so
does it for blocks, "%$b"). 
Using the the total inode count number in debugfs leads to an error:
share ~ # tune2fs -l /dev/mapper/share | grep "Inode count"
Inode count:              366268416
share ~ # debugfs /dev/mapper/share 
debugfs 1.44.5 (15-Dec-2018)
debugfs:  stat 366268416
366268416: File not found by ext2_lookup

Or did I get you wrong?

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