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To: Paul Jones <paul@pauljones.id.au>
Subject: RE: Is it really possible to dedupe read-only snapshots!?
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Date: Mon, 02 Oct 2017 13:26:22 +0200
From: =?UTF-8?Q?Niccol=C3=B2_Belli?= <darkbasic@linuxsystems.it>
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Il 2017-10-02 13:14 Paul Jones ha scritto:
> I use bees for deduplication and it will quite happily dedupe
> read-only snapshots.

AFAIK no, it isn't possible. Source: 
https://www.spinics.net/lists/linux-btrfs/msg60385.html
"It should be possible to deduplicate a read-only file to a read-write 
one, but that's probably not worth the effort in many real-world use 
cases."

> You could always change them to RW while dedupe
> is running then change back to RO.

AFAIK it will break send/receive, can someone confirm?

Niccolò