From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: Help recovering an interrupted raid0 reshape Date: Tue, 7 Apr 2015 16:30:04 +1000 Message-ID: <20150407163004.7550da77@notabene.brown> References: <20150407094608.4a9dd142@notabene.brown> <20150407115033.1d63b65c@notabene.brown> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_//9IA8Zka+SNyjfAdlwsCwkJ"; protocol="application/pgp-signature" Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: "Jonathan Harker (Jesusaurus)" Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_//9IA8Zka+SNyjfAdlwsCwkJ Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Mon, 6 Apr 2015 22:14:56 -0700 "Jonathan Harker (Jesusaurus)" wrote: > On Mon, Apr 6, 2015 at 6:50 PM, NeilBrown wrote: > > On Tue, 7 Apr 2015 09:46:08 +1000 NeilBrown wrote: > > > >> On Fri, 3 Apr 2015 19:22:15 -0700 "Jonathan Harker (Jesusaurus)" > >> wrote: > >> > >> > > >> > Third, is it possible to resume the reshape? If not, can it be rever= ted? > >> > > >> > >> I'll have to get back to you on that. Hopefully you can be patient a = little > >> longer. > >> > >> NeilBrown > >> >=20 > Thanks for taking the time to look into this. I've managed to be > patient with the problem for about a week now (I was cautiously poking > and prodding the array for a few days before reaching out to this > list) so I think I can manage a little more patience. >=20 > >> > > > > Hi again Jonathan, > > please report what version of mdadm and of Linux that you are running. >=20 > My mdadm version is "mdadm - v3.3.1 - 5th June 2014" and my linux > version (according to `uname -r`) is 3.16.2-3. >=20 > > > > Also is there any chance that you tried > > mdadm --assemble .... --update=3Drevert-reshape > > ?? > > And if you did, why didn't you say so :-) >=20 > During those first couple days I tried a couple assemble and > incremental commands to try to get the reshape to restart, though I > don't remember exactly what they were. It's possible I tried something > as scary and irreversible as --update=3Drevert-reshape in some desperate > haze, so let's assume I did, but I was trying hard to avoid any advice > that included --force in the command. Try: mdadm -S /dev/md124 mdadm -A /dev/md124 --update=3Drevert-reshape /dev/md/alpha /dev/md/beta mdadm -S /dev/md124 mdadm -A /dev/md124 -vvv /dev/md/alpha /dev/md/beta /dev/md/gamma What does that report? NeilBrown --Sig_//9IA8Zka+SNyjfAdlwsCwkJ Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIVAwUBVSN5bDnsnt1WYoG5AQJoyQ/+KSjKbolugU76lyIZvADmlmoTZh1EKS/Q XUrI/biBZlVAiTBCQv3SrpWDWsa90sZRQ37ELk8wab1JYUXnAIoW/KW09o7PKTEQ OHpfasfLxNG3sC2oBshGXD9FKJNkExEakkWxXKZE09fJnGcWJeCp4Q+x4XQSTJqx xrz9MBi6q9iK5e1OOcks5jOoPGg7Ntrs/FlXGN0CLVmSwFvOTaBrtml+IFFFeXHP J5AGMYg03T9zuSyxiV4WI3fRbqNaAL8jRPODfn9qHmHFca7uAS7UXGeyk2RUB7Yz e7b36I3tte8w8z4TTYrpXxWLan4Qc6+6SB8iRDsP5Yc+oNVCrvrJmZr70SjRSnI2 NXBSMD0Vops7cZwX1wbKbmtgiU3bmC0beBwYuOk/aVOyzotCNnRLDpQhz+6+n5Rv HTPgb2snDsplu5ZwmX8GH44ezhTkBH0C/8jN48g4f/yx8sRs2AF7zliFmv77o91Q c+ei4Qxa0kj4YFTT2T+vFN2vJWQdwPcJ2Efr98+dh0oKNnWm7zf4ufm9QiRlfJyD dTlvpAQo7qr4T3hhfP3Wzche7ULpB7j9EiQ3Dgg6qVHjPWTNs3TvAmMiceKwAUbS CiCm39qJcyO+kdnB/e5HVYXho5uOSUScU//Tv9YrltdQWqLERV6p0eq76tKX80qv 7Kx/lX4M0Sk= =h5RH -----END PGP SIGNATURE----- --Sig_//9IA8Zka+SNyjfAdlwsCwkJ--