From: Wols Lists <antlists@youngman.org.uk>
To: Shaohua Li <shli@kernel.org>,
Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Cc: linux-raid@vger.kernel.org, shli@fb.com, neilb@suse.com,
jes.sorensen@gmail.com
Subject: Re: [PATCH v3 5/9] raid5-ppl: Partial Parity Log write logging implementation
Date: Thu, 9 Feb 2017 16:06:00 +0000 [thread overview]
Message-ID: <589C9368.1020602@youngman.org.uk> (raw)
In-Reply-To: <20170208053444.b4yfmahmlrjgvv7x@kernel.org>
On 08/02/17 05:34, Shaohua Li wrote:
> so it's the implementation which doesn't flush disk cache before writting new
> data to disks, right? That makes sense then. I think we should fix this soon.
> Don't think people will (or remember to) disable write-back cache before using
> ppl.
Dunno whether I'm making a fool of myself :-) but might a quick-n-dirty
workaround be to make enabling PPL also disable write-back cache? With
maybe a warning not to switch it back on?
Cheers,
Wol
next prev parent reply other threads:[~2017-02-09 16:06 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-30 18:59 [PATCH v3 0/9] Partial Parity Log for MD RAID 5 Artur Paszkiewicz
2017-01-30 18:59 ` [PATCH v3 1/9] raid5-cache: move declarations to separate header Artur Paszkiewicz
2017-01-30 18:59 ` [PATCH v3 2/9] raid5-cache: add policy logic Artur Paszkiewicz
2017-01-30 18:59 ` [PATCH v3 3/9] md: superblock changes for PPL Artur Paszkiewicz
2017-02-07 21:20 ` Shaohua Li
2017-02-08 11:58 ` Artur Paszkiewicz
2017-01-30 18:59 ` [PATCH v3 4/9] raid5: calculate partial parity for a stripe Artur Paszkiewicz
2017-02-07 21:25 ` Shaohua Li
2017-02-08 11:58 ` Artur Paszkiewicz
2017-01-30 18:59 ` [PATCH v3 5/9] raid5-ppl: Partial Parity Log write logging implementation Artur Paszkiewicz
2017-02-07 21:42 ` Shaohua Li
2017-02-08 11:58 ` Artur Paszkiewicz
2017-02-08 5:34 ` Shaohua Li
2017-02-09 15:35 ` Artur Paszkiewicz
2017-02-09 17:09 ` Shaohua Li
2017-02-09 16:06 ` Wols Lists [this message]
2017-02-09 17:13 ` Shaohua Li
2017-01-30 18:59 ` [PATCH v3 6/9] md: add sysfs entries for PPL Artur Paszkiewicz
2017-02-07 21:49 ` Shaohua Li
2017-02-08 11:58 ` Artur Paszkiewicz
2017-02-08 18:14 ` Shaohua Li
2017-01-30 18:59 ` [PATCH v3 7/9] raid5-ppl: load and recover the log Artur Paszkiewicz
2017-01-30 18:59 ` [PATCH v3 8/9] raid5-ppl: support disk hot add/remove with PPL Artur Paszkiewicz
2017-01-30 18:59 ` [PATCH v3 9/9] raid5-ppl: runtime PPL enabling or disabling Artur Paszkiewicz
2017-03-27 5:08 ` NeilBrown
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