From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: [PATCH 0/5] Fixes for RAID1 resync Date: Wed, 24 Sep 2014 14:49:31 +1000 Message-ID: <20140924144931.5f9f5fcd@notabene.brown> References: <20140910062039.26400.36745.stgit@notabene.brown> <8697EC47-F648-4E66-B37C-4A2DC3030696@redhat.com> <20140915133006.14e57085@notabene.brown> <2C41CCF8-8B5C-486F-AE43-42D10EBAA0A5@redhat.com> <20140918174846.6a445eaf@notabene.brown> <398DA7BB-7BED-49E0-8178-0CA4384E8A84@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/Xqe5ickHUXTzawdOppeeoGL"; protocol="application/pgp-signature" Return-path: In-Reply-To: <398DA7BB-7BED-49E0-8178-0CA4384E8A84@redhat.com> Sender: linux-raid-owner@vger.kernel.org To: Brassow Jonathan Cc: Eivind Sarto , linux-raid@vger.kernel.org, majianpeng List-Id: linux-raid.ids --Sig_/Xqe5ickHUXTzawdOppeeoGL Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Tue, 23 Sep 2014 23:25:12 -0500 Brassow Jonathan wrote: >=20 > Sorry, still not there yet. No?? I was *sure* I had it that time! >=20 > I'm sorry I haven't had more time to spend on this. I'll try to get some= help (perhaps from Heinz) and see if we can pitch-in instead of making you= do all the work. Could you include /proc/PID/stack for the two md kernel threads? They are unlikely to differ from what we have seen before but as they are the strongest pointer to where the problem is, I like to be able to see them :-) Also I'd like to see the disassembly of raise_barrier() just to be certain which of the two 'wait's it is waiting in. One thing that might be useful is to change the various wait_event_lock_irq= () calls to wait_event_lock_irq_cmd() with an extra argument 'dotrace(conf)' where dotrace() is a new function that first calls schedule_timeout(60*HZ); and then if that returns 0, prints out all fields that might be of interest. Also get it to print which 'wait' it was called from (e.g. pass a string to dotrace). Thanks, NeilBrown --Sig_/Xqe5ickHUXTzawdOppeeoGL Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIVAwUBVCJNWznsnt1WYoG5AQIv9g//QcZLdgT2ITRoRa0AaiHPd5fQj9u0RYhR D4LPtd9Wg19AseOQf3TvFml6MmNl4eSP2eVPmLowDHdLD/6dYehBn+Ef8ldJSoVK 2heKmDKKkPf3lHB3cJ38QVlQv53bb1gp7n1squZF7oUnLMomE1b5Gw4V2J1eqP5v r4edcKObL4MHwGCY+xMX1+4OoPxEVhJj605/jfPx80EMb4ugDaMvPbEOAiQS7COA 7ByD5MkR3yunJNkF9xTwQm6ZaU8o6KUdZTsR1wYdJZQT1t8Pzm7ALqABik0J9cql Gv7OSwjY863NGqHE0mkmVwI0h3HhDQ/f+k9DfpzaJUOjoPifSCwfI3W5EWO9WRbM odEPfvsXWaPNet8t1wufV6o46tpTqmObM4OrW2kI94J7E2GTz5H9NiACCyhVhlRM y7sHFh9dillYyM2I6+G/hutjww9crBT66Tpm9ozmfv0KbfPHv7qZLL/mmhBvn2II tQ8+h70gxGF/6R5MwcfX4fUJYIr2CHVWST926doAR/9m6sBfhISYwjXcDB3+zEUd wXEhTL2BZivrHOt5sOT/XsI7CC2+LcW16PorFjtpBYheivnQmG1rpihVl1iwZ+xX 1OsYTwCZ1vu/mfxn/idztT+4dAlBnXLQTj/MjiaQSeng7VX1a+HT1qGPvgJsSBSk aJ4kUhbN9qU= =zeLu -----END PGP SIGNATURE----- --Sig_/Xqe5ickHUXTzawdOppeeoGL--