From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Mike Snitzer <snitzer@redhat.com>
Cc: linux-kernel@vger.kernel.org, Jens Axboe <jaxboe@fusionio.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Shuichi Ihara <sihara@ddn.com>
Subject: Re: [RFC PATCH] block: change max_segments default to USHRT_MAX
Date: Tue, 29 Nov 2011 12:59:01 -0500 [thread overview]
Message-ID: <yq1mxbehkt6.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <1322517615-28530-1-git-send-email-snitzer@redhat.com> (Mike Snitzer's message of "Mon, 28 Nov 2011 17:00:15 -0500")
>>>>> "Mike" == Mike Snitzer <snitzer@redhat.com> writes:
Mike> The reported problem was that a DM multipath device's max_segemnts
Mike> was constrained to BLK_MAX_SEGMENTS (128) even though the
Mike> underlying paths' max_segments were larger. For example, SCSI
Mike> establishes a max_segments of SCSI_MAX_SG_CHAIN_SEGMENTS (2048).
I'd rather that we revisited the patches I posted a while back where we
have different defaults for LLDs and stacking drivers.
I'll freshen those up and post them later today. I have a few concalls
to clear first...
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2011-11-29 17:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-28 22:00 [RFC PATCH] block: change max_segments default to USHRT_MAX Mike Snitzer
2011-11-29 17:59 ` Martin K. Petersen [this message]
2011-11-29 19:33 ` Mike Snitzer
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