From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: PULL REQUEST - serious md/RAID10 bug in 3.1 when activating a hot-spare. Date: Mon, 31 Oct 2011 16:49:54 +1100 Message-ID: <20111031164954.274dda14@notabene.brown> References: <20111031130859.121d5620@notabene.brown> <4EAE2C62.3030506@fnarfbargle.com> <4EAE3352.8090409@fnarfbargle.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/b5wzpTW1V=iP0WIFMoGjYYu"; protocol="application/pgp-signature" Return-path: In-Reply-To: <4EAE3352.8090409@fnarfbargle.com> Sender: linux-raid-owner@vger.kernel.org To: Brad Campbell Cc: linux RAID List-Id: linux-raid.ids --Sig_/b5wzpTW1V=iP0WIFMoGjYYu Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Mon, 31 Oct 2011 13:34:10 +0800 Brad Campbell wrote: > On 31/10/11 13:04, Brad Campbell wrote: > > On 31/10/11 10:08, NeilBrown wrote: > >> > >> Hi Linus et al, > >> > >> I just discovered a fairly serious flaw that I introduced into 3.1 - > >> details > >> below. > >> > >> Anyone running RAID10 with 3.1 is advised to either apply this patch or > >> revert an earlier kernel as soon as possible. In the mean time, remove > >> any > >> hot spares from an RAID10 array. > >> > > > > G'day Neil, > > > > Is that the issue I bumped up against here? > > > > http://permalink.gmane.org/gmane.linux.raid/35805 >=20 > After looking closer I can confirm that making the indicated change=20 > resolves this problem. Yes, definitely the same problem. It's a shame I didn't pay proper attention to that report at the time - I think that was the day that the uSD in my phone died and I was somewhat distracted trying to figure out how to rebuild the install from scratch :-( NeilBrown --Sig_/b5wzpTW1V=iP0WIFMoGjYYu Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iQIVAwUBTq43Dznsnt1WYoG5AQLymg/+Jm095/0MmPYKDhamJbB2ytj0BA1l1Ix+ y+AXqDct1l2Gn6lgjHbS08ZVSfImKruwuEA6/fZNzMNZDopDUz5wrgMMCdpPHdi2 We5UahKKzCakMOCcroNiWcuTnPGnPJGqz9eTyRHCpMI0GEyM+bn2zqDu2N6v6SFw MyyUI3jkUDFdjRWlIgfhgDQ6/2yjYjLESEDXssDGxHHwd7RoikYPmhBnDQgVs/9D 0atYQjEbC5sin1MS3OyuESoDCGOppP8Mv4i2h69ypnwdz38bmXyk+dw37Wz8Fagd bJAXMO6zv3aXOjlLUbY8VjHcFaBsqimL+4UweJDX2tDXUiSNwbH2OlmlHcQ7/O5Z wJVNufHIrxIdPVApa1oR3TzJSVvOxLsfidk9ptYGV5m84MGERybbI4yfST5/v85E WzEeZ0kufBjQZcrmAnfmBfS6JdnyWE5zpCyCqq6epKkXubx4cv5qYDlUaF72PxqV YusBwwvFAxLvhPmWtf3jDhuzbCw4BU4Up/tocFlDM9akic7F0+jGtQoAg943yGTr y8LBw53SvCwMkzgn9KW9H2CyTZjuw2k1Ls/69oyIn3EhkSCFFg9WiZakvEZ67tS8 K67/g8FCZEblrt+6geVCazHbmNKaiE0aev/lXl9/6hpDJn0lRxSrZ1MjwJgnvwJ9 row05cOJNRI= =uuw4 -----END PGP SIGNATURE----- --Sig_/b5wzpTW1V=iP0WIFMoGjYYu--