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List:       linux-btrfs
Subject:    Recover a damaged btrfs backup image
From:       Dark Penguin <darkpenguin () yandex ! ru>
Date:       2019-06-30 10:32:09
Message-ID: 1f678d8a-9f2a-022c-b0f3-98af0e8c7712 () yandex ! ru
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Greetings!

I have a 50-Gb backup of a btrfs subvolume made with 'btrfs send
mysubvolume | pigz > mysubvolume.btrfs.gz'. Later it turned out that the
archive is damaged - there are a few consecutive gzip errors after 1 Gb.
The rest of the file can be recovered with gzip recovery tools.

However, 'btrfs receive' can not continue after encountering this spot.
I have found numerous ways to recover btrfs partitions, but not backup
images. Is there any way to ignore the error and continue with the rest
of files? I'd be happy even if I could only see the contents (metadata?)
- to account for what exactly is lost.


-- 
darkpenguin
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