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From: "Konopko, Igor J" <igor.j.konopko@intel.com>
To: Javier Gonzalez <javier@cnexlabs.com>, Matias Bjorling <mb@lightnvm.io>
Cc: Jens Axboe <axboe@fb.com>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	"Dziegielewski, Marcin" <marcin.dziegielewski@intel.com>
Subject: RE: [GIT PULL 16/20] lightnvm: error handling when whole line is bad
Date: Tue, 29 May 2018 13:15:42 +0000	[thread overview]
Message-ID: <76C92B909A93A84C99173B331AB578DAC7AB5252@irsmsx111.ger.corp.intel.com> (raw)
In-Reply-To: <C161E678-ADEE-4E05-AC19-B54358005532@cnexlabs.com>

> From: Javier Gonzalez [mailto:javier@cnexlabs.com]
> This case cannot occur on the only user of the function
> (pblk_recov_l2p()). On the previous check (pblk_line_was_written()), we
> verify the state of the line and the position of the first good chunk. In
> the case of a bad line (less chunks than a given threshold to allow
> emeta), the recovery will not be carried out in the line.
You are right. It looks that during my testing there was some inconsistency between chunks state table which is verified inside pblk_line_was_written() and blk_bitmap which was read from emeta and is verified in pblk_line_smeta_start(). I'm living decision to maintainers whether we should keep this sanity check or not - it really just pass gracefully the result from pblk_line_smeta_start() where similar sanity check is present.

Igor

  reply	other threads:[~2018-05-29 13:15 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-28  8:58 [GIT PULL 00/20] lightnvm updates for 4.18 Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 01/20] lightnvm: pblk: fail gracefully on line alloc. failure Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 02/20] lightnvm: pblk: recheck for bad lines at runtime Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 03/20] lightnvm: pblk: check read lba on gc path Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 04/20] lightnvm: pblk: improve error msg on corrupted LBAs Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 05/20] lightnvm: pblk: warn in case of corrupted write buffer Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 06/20] lightnvm: pblk: return NVM_ error on failed submission Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 07/20] lightnvm: pblk: remove unnecessary indirection Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 08/20] lightnvm: pblk: remove unnecessary argument Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 09/20] lightnvm: pblk: check for chunk size before allocating it Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 10/20] lightnvm: pass flag on graceful teardown to targets Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 11/20] lightnvm: pblk: remove dead function Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 12/20] lightnvm: pblk: rework write error recovery path Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 13/20] lightnvm: pblk: garbage collect lines with failed writes Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 14/20] lightnvm: pblk: fix smeta write error path Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 15/20] lightnvm: proper error handling for pblk_bio_add_pages Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 16/20] lightnvm: error handling when whole line is bad Matias Bjørling
2018-05-28 10:59   ` Javier Gonzalez
2018-05-29 13:15     ` Konopko, Igor J [this message]
2018-05-29 18:29       ` Javier Gonzalez
2018-05-28  8:58 ` [GIT PULL 17/20] lightnvm: fix partial read error path Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 18/20] lightnvm: pblk: handle case when mw_cunits equals to 0 Matias Bjørling
2018-05-28 11:02   ` Javier Gonzalez
2018-06-04 10:09     ` Dziegielewski, Marcin
2018-06-04 10:09       ` Dziegielewski, Marcin
2018-06-04 10:21       ` Javier Gonzalez
2018-06-04 10:21         ` Javier Gonzalez
2018-06-04 11:11         ` Dziegielewski, Marcin
2018-06-04 11:11           ` Dziegielewski, Marcin
2018-06-04 11:15           ` Javier Gonzalez
2018-06-04 11:15             ` Javier Gonzalez
2018-06-04 17:17             ` Dziegielewski, Marcin
2018-06-04 17:17               ` Dziegielewski, Marcin
2018-06-05  7:12               ` Javier Gonzalez
2018-06-05  9:18                 ` Dziegielewski, Marcin
2018-05-28  8:58 ` [GIT PULL 19/20] lightnvm: pblk: add possibility to set write buffer size manually Matias Bjørling
2018-05-28  8:58 ` [GIT PULL 20/20] lightnvm: pblk: sync RB and RL states during GC Matias Bjørling
2018-05-28 10:51   ` Javier Gonzalez
2018-05-29 13:07     ` Konopko, Igor J
2018-05-29 17:58       ` Javier Gonzalez
2018-06-01 10:45 ` [GIT PULL 00/20] lightnvm updates for 4.18 Matias Bjørling
2018-06-01 12:36   ` Jens Axboe
2018-06-01 12:36     ` Jens Axboe

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