I had an occasion that XFS is not able to fully detect or recover from severe file system corruption

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Hi guys,

The problem happened in last year. I do not have the corrupted file
system now. But I would like to discuss it. Any comment is welcomed.

I was using Fedora 24. I had an XFS file system in an hard drive. I
had used some kind of  SSD write back caching on top of the hard
drive.

Somehow the SSD was removed and when the system is rebooted, the XFS
file system could not be mounted.

I run xfs_repair, it reported some files are corrupted. It had
completed the repair of file system and some files were corrupted.
Then I could mount the filesystem. I started using the existing files
that did not have corruption. After sometime, the file system stopped
again because it detected XFS file system is corrupted.

Then I run xfs_repair again and it found additional files were still corrupted.

So I have a question if xfs_repair is able to fully detect all files
that are corrupted by running xfs_repair only once.

Best regards,
Patrick
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