Re: RAID5 failure and consequent ext4 problems

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Hi Luigi,


On 9/10/22 15:55, Luigi Fabio wrote:
Well, I found SOMETHING of decided interest: when I run dumpe2fs with
any backup superblock, this happens:

---
Filesystem created:       Tue Nov  4 08:56:08 2008
Last mount time:          Thu Aug 18 21:04:22 2022
Last write time:          Thu Aug 18 21:04:22 2022
---

So the backups have not been updated since boot-before-last? That
would explain why, when fsck tries to use those backups, it comes up
with funny results.

Interesting.

Is this ...as intended, I wonder? Does it also imply that any file
that was written to > aug 18th will be in an indeterminate state? That
would seem to be the implication.

Hmm. I wouldn't have thought so, but maybe the backup blocks don't get updated as often?

{ I think you are about as far as I would have gotten myself, if I allowed myself to get there. }

Phil



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