All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Alan <alan@lxorguk.ukuu.org.uk>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
	"Moore, Eric" <Eric.Moore@lsi.com>,
	ric@emc.com, Theodore Tso <tytso@mit.edu>,
	Neil Brown <neilb@suse.de>, "H. Peter Anvin" <hpa@zytor.com>,
	Linux-ide <linux-ide@vger.kernel.org>,
	linux-scsi <linux-scsi@vger.kernel.org>,
	linux-raid@vger.kernel.org, Tejun Heo <htejun@gmail.com>,
	James Bottomley <James.Bottomley@SteelEye.com>,
	Mark Lord <mlord@pobox.com>, Jens Axboe <jens.axboe@oracle.com>,
	"Clark, Nathan" <Clark_Nathan@emc.com>,
	"Singh, Arvinder" <Singh_Arvinder@emc.com>,
	"De Smet, Jochen" <DeSmet_Jochen@emc.com>,
	"Farmer, Matt" <Farmer_Matt@emc.com>,
	linux-fsdevel@vger.kernel.org, "Mizar,
	Sunita" <Mizar_Sunita@emc.com>
Subject: Re: end to end error recovery musings
Date: Tue, 27 Feb 2007 17:51:44 -0500	[thread overview]
Message-ID: <yq1mz2z6wov.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <20070227233946.7ad33a50@lxorguk.ukuu.org.uk> (alan@lxorguk.ukuu.org.uk's message of "Tue, 27 Feb 2007 23:39:46 +0000")

>>>>> "Alan" == Alan  <alan@lxorguk.ukuu.org.uk> writes:

>> Not sure you're up-to-date on the T10 data integrity feature.
>> Essentially it's an extension of the 520 byte sectors common in
>> disk

[...]

Alan> but here's a minor bit of passing bad news - quite a few older
Alan> ATA controllers can't issue DMA transfers that are not a
Alan> multiple of 512 bytes without crapping themselves (eg
Alan> READ_LONG). Guess we may need to add
Alan> ap-> i_do_not_suck or similar 8)

I'm afraid it stops even before you get that far.  There doesn't seem
to be any interest in adopting the Data Integrity Feature (or anything
similar) in the ATA camp.  So for now it's a SCSI-only thing.

I encourage people to lean on their favorite disk manufacturer.  This
would be a great feature to have on SATA too...

-- 
Martin K. Petersen	Oracle Linux Engineering


WARNING: multiple messages have this Message-ID (diff)
From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Alan <alan@lxorguk.ukuu.org.uk>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
	"Moore, Eric" <Eric.Moore@lsi.com>, <ric@emc.com>,
	"Theodore Tso" <tytso@mit.edu>, "Neil Brown" <neilb@suse.de>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"Linux-ide" <linux-ide@vger.kernel.org>,
	"linux-scsi" <linux-scsi@vger.kernel.org>,
	<linux-raid@vger.kernel.org>, "Tejun Heo" <htejun@gmail.com>,
	"James Bottomley" <James.Bottomley@SteelEye.com>,
	"Mark Lord" <mlord@pobox.com>,
	"Jens Axboe" <jens.axboe@oracle.com>,
	"Clark, Nathan" <Clark_Nathan@emc.com>,
	"Singh, Arvinder" <Singh_Arvinder@emc.com>,
	"De Smet, Jochen" <DeSmet_Jochen@emc.com>,
	"Farmer, Matt" <Farmer_Matt@emc.com>,
	<linux-fsdevel@vger.kernel.org>,
	"Mizar, Sunita" <Mizar_Sunita@emc.com>
Subject: Re: end to end error recovery musings
Date: Tue, 27 Feb 2007 17:51:44 -0500	[thread overview]
Message-ID: <yq1mz2z6wov.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <20070227233946.7ad33a50@lxorguk.ukuu.org.uk> (alan@lxorguk.ukuu.org.uk's message of "Tue, 27 Feb 2007 23:39:46 +0000")

>>>>> "Alan" == Alan  <alan@lxorguk.ukuu.org.uk> writes:

>> Not sure you're up-to-date on the T10 data integrity feature.
>> Essentially it's an extension of the 520 byte sectors common in
>> disk

[...]

Alan> but here's a minor bit of passing bad news - quite a few older
Alan> ATA controllers can't issue DMA transfers that are not a
Alan> multiple of 512 bytes without crapping themselves (eg
Alan> READ_LONG). Guess we may need to add
Alan> ap-> i_do_not_suck or similar 8)

I'm afraid it stops even before you get that far.  There doesn't seem
to be any interest in adopting the Data Integrity Feature (or anything
similar) in the ATA camp.  So for now it's a SCSI-only thing.

I encourage people to lean on their favorite disk manufacturer.  This
would be a great feature to have on SATA too...

-- 
Martin K. Petersen	Oracle Linux Engineering


  reply	other threads:[~2007-02-27 22:51 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-27  1:10 end to end error recovery musings Moore, Eric
2007-02-27  1:10 ` Moore, Eric
2007-02-27 16:50 ` Martin K. Petersen
2007-02-27 16:50   ` Martin K. Petersen
2007-02-27 18:51   ` Ric Wheeler
2007-02-27 19:02   ` Alan
2007-02-27 19:02     ` Alan
2007-02-27 18:39     ` Andreas Dilger
2007-02-27 19:07     ` Martin K. Petersen
2007-02-27 19:07       ` Martin K. Petersen
2007-02-27 23:39       ` Alan
2007-02-27 23:39         ` Alan
2007-02-27 22:51         ` Martin K. Petersen [this message]
2007-02-27 22:51           ` Martin K. Petersen
2007-02-28 13:46           ` Douglas Gilbert
2007-02-28 17:16             ` Martin K. Petersen
2007-02-28 17:30               ` James Bottomley
2007-02-28 17:42                 ` Martin K. Petersen
2007-02-28 17:52                   ` James Bottomley
2007-03-01  1:28                     ` H. Peter Anvin
2007-03-01 14:25                       ` James Bottomley
2007-03-01 17:19                         ` H. Peter Anvin
2007-02-28 15:19       ` Moore, Eric
2007-02-28 15:19         ` Moore, Eric
2007-02-28 17:27         ` Martin K. Petersen
  -- strict thread matches above, loose matches on Subject: below --
2007-02-23 14:15 Ric Wheeler
2007-02-23 14:15 ` Ric Wheeler
2007-02-24  0:03 ` H. Peter Anvin
2007-02-24  0:37   ` Andreas Dilger
2007-02-24  2:05     ` H. Peter Anvin
2007-02-24  2:32     ` Theodore Tso
2007-02-24 18:39       ` Chris Wedgwood
2007-02-26  5:33       ` Neil Brown
2007-02-26 13:25         ` Theodore Tso
2007-02-26 15:15           ` Alan
2007-02-26 15:18             ` Ric Wheeler
2007-02-26 17:01               ` Alan
2007-02-26 16:42                 ` Ric Wheeler
2007-02-26 15:17           ` James Bottomley
2007-02-26 18:59           ` H. Peter Anvin
2007-02-26 22:46           ` Jeff Garzik
2007-02-26 22:53             ` Ric Wheeler
2007-02-27  1:19               ` Alan
2007-02-26  6:01   ` Douglas Gilbert

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=yq1mz2z6wov.fsf@sermon.lab.mkp.net \
    --to=martin.petersen@oracle.com \
    --cc=Clark_Nathan@emc.com \
    --cc=DeSmet_Jochen@emc.com \
    --cc=Eric.Moore@lsi.com \
    --cc=Farmer_Matt@emc.com \
    --cc=James.Bottomley@SteelEye.com \
    --cc=Mizar_Sunita@emc.com \
    --cc=Singh_Arvinder@emc.com \
    --cc=alan@lxorguk.ukuu.org.uk \
    --cc=hpa@zytor.com \
    --cc=htejun@gmail.com \
    --cc=jens.axboe@oracle.com \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-ide@vger.kernel.org \
    --cc=linux-raid@vger.kernel.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=mlord@pobox.com \
    --cc=neilb@suse.de \
    --cc=ric@emc.com \
    --cc=tytso@mit.edu \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.