From: Jens Axboe <jaxboe@fusionio.com>
To: Mike Snitzer <snitzer@redhat.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
"James.Bottomley@hansenpartnership.com"
<James.Bottomley@hansenpartnership.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>
Subject: Re: I/O topology fixes for big physical block size
Date: Tue, 28 Sep 2010 13:30:34 +0900 [thread overview]
Message-ID: <4CA16F6A.1090904@fusionio.com> (raw)
In-Reply-To: <20100927231551.GA15653@redhat.com>
On 2010-09-28 08:15, Mike Snitzer wrote:
> On Mon, Sep 27 2010 at 6:36pm -0400,
> Martin K. Petersen <martin.petersen@oracle.com> wrote:
>
>>>>>>> "Jens" == Jens Axboe <jaxboe@fusionio.com> writes:
>> Jens> Does mkfs do the right thing?
>>
>> Depends on which mkfs it is. Mike has tested things and can chip in
>> here...
>
> I haven't test all mkfs.* but...
>
> mkfs.xfs just works with 1M physical_block_size.
>
> mkfs.ext4 won't by default but -F "fixes" that:
>
> # mkfs.ext4 -b 4096 -F /dev/mapper/20017380023360006
> mke2fs 1.41.12 (17-May-2010)
> Warning: specified blocksize 4096 is less than device physical sectorsize 1048576, forced to continue
OK, so that's not exactly doing the right thing, but at least you can
work around it with a parameter. So I'd say that is good enough.
> I'll check fdisk and parted tomorrow (I know lvm2 doesn't look at
> physical_block_size).
Thanks!
--
Jens Axboe
next prev parent reply other threads:[~2010-09-28 4:30 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-27 16:41 I/O topology fixes for big physical block size Martin K. Petersen
2010-09-27 16:41 ` [PATCH 1/2] block: Ensure physical block size is unsigned int Martin K. Petersen
2010-09-27 17:40 ` Mike Snitzer
2010-10-08 5:15 ` Martin K. Petersen
2010-10-13 19:12 ` Mike Snitzer
2010-10-13 19:15 ` Jens Axboe
2010-09-27 16:41 ` [PATCH 2/2] sd: Fix overflow with big physical blocks Martin K. Petersen
2010-09-27 17:42 ` Mike Snitzer
2010-09-27 18:13 ` [PATCH] block: eliminate potential for infinite loop in blkdev_issue_discard Mike Snitzer
2010-10-14 21:37 ` Mike Snitzer
2010-10-15 11:05 ` Jens Axboe
2010-09-27 16:54 ` I/O topology fixes for big physical block size Jens Axboe
2010-09-27 17:20 ` Martin K. Petersen
2010-09-27 22:21 ` Jens Axboe
2010-09-27 22:36 ` Martin K. Petersen
2010-09-27 23:15 ` Mike Snitzer
2010-09-28 4:30 ` Jens Axboe [this message]
2010-09-28 5:20 ` Eric Sandeen
2010-09-28 14:15 ` Mike Snitzer
2010-09-28 20:57 ` Ted Ts'o
2010-09-28 21:24 ` Martin K. Petersen
2010-09-28 21:24 ` Martin K. Petersen
2010-09-28 21:36 ` Eric Sandeen
2010-09-30 16:30 ` Ted Ts'o
2010-09-30 17:07 ` Eric Sandeen
2010-09-30 17:07 ` Eric Sandeen
2010-09-30 17:33 ` Mike Snitzer
2010-10-01 14:24 ` Ted Ts'o
2010-10-01 22:19 ` Martin K. Petersen
2010-10-01 22:19 ` Martin K. Petersen
2010-10-02 2:31 ` Ted Ts'o
2010-10-02 3:03 ` Daniel Taylor
2010-10-04 19:49 ` Martin K. Petersen
2010-10-04 19:49 ` Martin K. Petersen
2010-09-27 17:23 ` Mike Snitzer
2010-09-27 21:58 ` James Bottomley
2010-09-27 22:03 ` Jens Axboe
2010-09-27 22:14 ` Martin K. Petersen
2010-09-27 22:24 ` Jens Axboe
2010-09-28 18:48 ` Martin K. Petersen
2010-09-28 18:54 ` Mike Snitzer
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