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From: Anand Jain <anand.jain@oracle.com>
To: David Sterba <dsterba@suse.cz>
Cc: Zygo Blaxell <ce3g8jdj@umail.furryterror.org>,
	Alex Elsayed <eternaleye@gmail.com>,
	linux-btrfs@vger.kernel.org
Subject: Re: [RFC] Preliminary BTRFS Encryption
Date: Tue, 20 Sep 2016 22:26:28 +0800	[thread overview]
Message-ID: <f75de8d4-8f18-8118-4af3-f20642f609fd@oracle.com> (raw)
In-Reply-To: <20160917184510.GD933@twin.jikos.cz>




Hi David,

On 09/18/2016 02:45 AM, David Sterba wrote:
> On Sat, Sep 17, 2016 at 12:38:30AM -0400, Zygo Blaxell wrote:
>> There's also a nasty problem with the extent tree--there's only one per
>> filesystem, it's shared between all subvols and block groups, and every
>> extent in that tree has back references to the (possibly encrypted) subvol
>> trees.  I'll leave that problem as an exercise for other readers.  ;)
>
> A design point that I'm not mentioning for the first time: there would
> be per-subvolume group extent trees, ie. a set of subvolumes with
> attached extent tree where similar to what we have now. So, encrypted
> and unencrypted extent metadata will never be mixed.
> (the crypto key questions are not addressed here)
>
> This hasn't been implemented but I'm making sure this will be possible
> when somebody mentions changes to the extent tree or blockgroup reworks
> (to actually solve other problems).

  Now I remember this was told before, sorry this slipped my mind.

Thanks, Anand


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>

  reply	other threads:[~2016-09-20 14:24 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-13 13:39 [RFC] Preliminary BTRFS Encryption Anand Jain
2016-09-13 13:39 ` [PATCH] btrfs: Encryption: Add btrfs encryption support Anand Jain
2016-09-13 14:12   ` kbuild test robot
2016-09-13 14:24   ` kbuild test robot
2016-09-13 16:10   ` kbuild test robot
2016-09-13 13:39 ` [PATCH 1/2] btrfs-progs: make wait_for_commit non static Anand Jain
2016-09-13 13:39 ` [PATCH 2/2] btrfs-progs: add encryption support Anand Jain
2016-09-13 13:39 ` [PATCH] fstests: btrfs: support encryption Anand Jain
2016-09-13 16:42 ` [RFC] Preliminary BTRFS Encryption Wilson Meier
2016-09-14  7:02   ` Anand Jain
2016-09-14 18:26     ` Wilson Meier
2016-09-15  4:53 ` Alex Elsayed
2016-09-15 11:33   ` Anand Jain
2016-09-15 11:47     ` Alex Elsayed
2016-09-16 11:35       ` Anand Jain
2016-09-15  5:38 ` Chris Murphy
2016-09-15 11:32   ` Anand Jain
2016-09-15 11:37 ` Austin S. Hemmelgarn
2016-09-15 14:06   ` Anand Jain
2016-09-15 14:24     ` Austin S. Hemmelgarn
2016-09-16  8:58       ` David Sterba
2016-09-17  2:18       ` Zygo Blaxell
2016-09-16  1:12 ` Dave Chinner
2016-09-16  5:47   ` Roman Mamedov
2016-09-16  6:49   ` Alex Elsayed
2016-09-17  4:38     ` Zygo Blaxell
2016-09-17  6:37       ` Alex Elsayed
2016-09-19 18:08         ` Zygo Blaxell
2016-09-19 20:01           ` Alex Elsayed
2016-09-19 22:22             ` Zygo Blaxell
2016-09-19 22:25             ` Chris Murphy
2016-09-19 22:31               ` Zygo Blaxell
2016-09-20  1:10                 ` Zygo Blaxell
2016-09-17 18:45       ` David Sterba
2016-09-20 14:26         ` Anand Jain [this message]
2016-09-16 10:45   ` Brendan Hide
2016-09-16 11:46   ` Anand Jain
2016-09-16  8:49 ` David Sterba
2016-09-16 11:56   ` Anand Jain
2016-09-17 20:35     ` David Sterba
2016-09-18  8:34       ` RAID1 availability issue[2], Hot-spare and auto-replace Anand Jain
2016-09-18 17:28         ` Chris Murphy
2016-09-18 17:34           ` Chris Murphy
2016-09-19  2:25           ` Anand Jain
2016-09-19 12:07             ` Austin S. Hemmelgarn
2016-09-19 12:25           ` Austin S. Hemmelgarn
2016-09-18  9:54       ` [RFC] Preliminary BTRFS Encryption Anand Jain
2016-09-20  0:12   ` Chris Mason
2016-09-20  0:55     ` Anand Jain
2016-09-17  6:58 ` Eric Biggers
2016-09-17  7:13   ` Alex Elsayed
2016-09-19 18:57     ` Zygo Blaxell
2016-09-19 19:50       ` Alex Elsayed
2016-09-19 22:12         ` Zygo Blaxell
2016-09-17 16:12   ` Anand Jain
2016-09-17 18:57     ` Chris Murphy
2016-09-19 15:15 ` Experimental btrfs encryption Theodore Ts'o
2016-09-19 20:58   ` Alex Elsayed
2016-09-20  0:32     ` Chris Mason
2016-09-20  2:47       ` Alex Elsayed
2016-09-20  2:50       ` Theodore Ts'o
2016-09-20  3:05         ` Alex Elsayed
2016-09-20  4:09         ` Zygo Blaxell
2016-09-20 15:44         ` Chris Mason
2016-09-21 13:52           ` Anand Jain
2016-09-20  4:05   ` Anand Jain

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