From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: [md PATCH 15/23] md/raid10 - support resizing some RAID10 arrays. Date: Wed, 14 Mar 2012 17:27:12 +1100 Message-ID: <20120314172712.3aa9310a@notabene.brown> References: <20120314043555.7978.75486.stgit@notabene.brown> <20120314044040.7978.69754.stgit@notabene.brown> <20120314061746.GA28196@www5.open-std.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/vg3WQePJdTw+7cWllBiU/XM"; protocol="application/pgp-signature" Return-path: In-Reply-To: <20120314061746.GA28196@www5.open-std.org> Sender: linux-raid-owner@vger.kernel.org To: keld@keldix.com Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/vg3WQePJdTw+7cWllBiU/XM Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Wed, 14 Mar 2012 07:17:46 +0100 keld@keldix.com wrote: > Hi Neil >=20 > What is the problem with adding space to the 'far' layout? >=20 > I would think you could just create the new array part 1 from the old arr= ay part 2, and > then sync the new array part 2 with the new array part 1. (in the case of= a far=3D2 array, > for n>2 similar constructs would apply). If I understand your proposal correctly, you would lose redundancy during t= he process, which is not acceptable. If I don't understand properly - please explain in a bit more detail. Thanks, NeilBrown --Sig_/vg3WQePJdTw+7cWllBiU/XM Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iQIVAwUBT2A6QDnsnt1WYoG5AQKmqQ/9H/68lCrMxZuWzPVRjM/CL+zim5jFMYe6 nRxaacQbx/nGZpsU0llcsMxtG5jHv7I0bQwiMsnVLY/BURghfCC11Q0HAEWZrZY9 pTPwdtXwrHX6EDc4/UWRiOyuROUH9EtcxYhMdQG58n3kI26On/l3ZbVm4LEAjT9A 2BUWCnubh4YjgrlxEIAJpV5GIQgXw61IuyLXaRZ2Os9HZ80V83Wo8j22vrh30KI+ I4LaeCr3OhXhcC+1/6CQgA5Y+FK/KMJMlhxwx0LVPflCwnJlLBG5FKaG5NKkuI87 XOEVgIIkYnVyWYaJPgltekEQQBVbC+XEI49yu2WTAeO6gOC1DIJJXcOftqWsvyXY kLT1m6APooE5ielPo1WvtoGvhA6KMFga3fAyMH6AV8i2dyfThBeM4zFZ6pcBmwST HeX50Yi1GLOlJMmJ+fzjjYcV3Bs2bbm/s/8vjwxzGLssBW2rBO9FsI0LL9tShCoH GIzXitRS0g+oji8nly6FbFFDYeGH8SIq0AiL8LGKuo7HoxgiDKetuVUEvT9iojo3 yN1A8GcOrNHAUvT6B4wlWQe9gQcohKy4bNqMSASsQ92XCnYVoxvY19pf0e5r9vHS RrJitQqZSUPCQageuiygatUoyha1b8B3ivDR0gFDTlyX+zaNOQHfr/GTz2w36+wV /ElP+4GLCe0= =mhNL -----END PGP SIGNATURE----- --Sig_/vg3WQePJdTw+7cWllBiU/XM--