Re: What still uses the block layer?

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From: david
Date: Tuesday, October 16, 2007 - 12:54 pm

On Tue, 16 Oct 2007, Alan Cox wrote:


if you use a PATA-SATA bridge (IDE drive SATA controller), it would look 
to the system like a SATA drive and be addressed and enumerated as SATA.

if you use a SATA-PATA bridge (SATA drive, PATA controller), it would look 
to the system like a PATA drive and be addressed and enumerated as PATA. 
prior to libata the device would be /dev/hdX, with X depending on how it's 
cabled and if it's set to master or slave, it wouldn't matter if that 
device then converts to other things, the system would still know it as an 
IDE drive.

this works exactly the same way that external encosures that hold SATA or 
IDE drives, but have SCSI interfaces to the system have always worked so 
it's what sysadmins will expect.

David Lang
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Messages in current thread:
What still uses the block layer?, Rob Landley, (Thu Oct 11, 6:11 pm)
Re: What still uses the block layer?, Matthew Wilcox, (Sat Oct 13, 3:05 pm)
Re: What still uses the block layer?, David Newall, (Sat Oct 13, 10:54 pm)
Re: What still uses the block layer?, Stefan Richter, (Sun Oct 14, 10:46 am)
Re: What still uses the block layer?, James Bottomley, (Sun Oct 14, 3:24 pm)
Re: What still uses the block layer?, Tilman Schmidt, (Sun Oct 14, 3:35 pm)
Re: What still uses the block layer?, Rob Landley, (Sun Oct 14, 4:36 pm)
Re: What still uses the block layer?, Rob Landley, (Sun Oct 14, 4:45 pm)
Re: What still uses the block layer?, Luben Tuikov, (Sun Oct 14, 5:45 pm)
Re: What still uses the block layer?, Theodore Tso, (Sun Oct 14, 6:45 pm)
Re: What still uses the block layer?, Stefan Richter, (Sun Oct 14, 10:44 pm)
Re: What still uses the block layer?, Greg KH, (Sun Oct 14, 11:00 pm)
Re: What still uses the block layer?, Rob Landley, (Sun Oct 14, 11:51 pm)
Re: What still uses the block layer?, Rob Landley, (Mon Oct 15, 1:04 am)
Re: What still uses the block layer?, Rob Landley, (Mon Oct 15, 1:36 am)
Re: What still uses the block layer?, Luben Tuikov, (Mon Oct 15, 1:37 am)
Re: What still uses the block layer?, Christoph Hellwig, (Mon Oct 15, 1:52 am)
Re: What still uses the block layer?, Julian Calaby, (Mon Oct 15, 2:06 am)
Re: What still uses the block layer?, Rob Landley, (Mon Oct 15, 2:26 am)
Re: What still uses the block layer?, Rob Landley, (Mon Oct 15, 3:08 am)
Re: What still uses the block layer?, Loïc Grenié, (Mon Oct 15, 3:32 am)
Re: What still uses the block layer?, Alan Cox, (Mon Oct 15, 6:08 am)
Re: What still uses the block layer?, James Bottomley, (Mon Oct 15, 6:10 am)
Re: What still uses the block layer?, Theodore Tso, (Mon Oct 15, 6:21 am)
Re: What still uses the block layer?, Alan Cox, (Mon Oct 15, 6:29 am)
Re: What still uses the block layer?, Theodore Tso, (Mon Oct 15, 6:35 am)
Re: What still uses the block layer?, Arjan van de Ven, (Mon Oct 15, 7:00 am)
Re: What still uses the block layer?, Douglas Gilbert, (Mon Oct 15, 7:46 am)
Re: What still uses the block layer?, Matthew Wilcox, (Mon Oct 15, 9:08 am)
Re: What still uses the block layer?, Stefan Richter, (Mon Oct 15, 10:10 am)
Re: What still uses the block layer?, Greg KH, (Mon Oct 15, 10:25 am)
Re: What still uses the block layer?, Greg KH, (Mon Oct 15, 10:33 am)
Re: What still uses the block layer?, Jeff Garzik, (Mon Oct 15, 10:44 am)
Re: What still uses the block layer?, Matthew Wilcox, (Mon Oct 15, 11:00 am)
Re: What still uses the block layer?, Jeff Garzik, (Mon Oct 15, 11:46 am)
Re: What still uses the block layer?, Matthew Garrett, (Mon Oct 15, 11:56 am)
Re: What still uses the block layer?, Wilfried Klaebe, (Mon Oct 15, 1:29 pm)
Re: What still uses the block layer?, Rob Landley, (Mon Oct 15, 2:09 pm)
Re: What still uses the block layer?, Rob Landley, (Mon Oct 15, 2:51 pm)
Re: What still uses the block layer?, Rob Landley, (Mon Oct 15, 3:54 pm)
Re: What still uses the block layer?, david, (Mon Oct 15, 7:51 pm)
Re: What still uses the block layer?, david, (Mon Oct 15, 7:54 pm)
Re: What still uses the block layer?, david, (Mon Oct 15, 8:06 pm)
Re: OOM killer gripe (was Re: What still uses the block la ..., Eric W. Biederman, (Mon Oct 15, 8:55 pm)
Re: What still uses the block layer?, Matthew Wilcox, (Mon Oct 15, 9:04 pm)
Re: What still uses the block layer?, Arjan van de Ven, (Mon Oct 15, 9:11 pm)
Re: What still uses the block layer?, david, (Mon Oct 15, 9:15 pm)
Re: What still uses the block layer?, Greg KH, (Mon Oct 15, 9:21 pm)
Re: OOM killer gripe (was Re: What still uses the block la ..., Eric W. Biederman, (Mon Oct 15, 9:38 pm)
Re: OOM killer gripe (was Re: What still uses the block la ..., Eric W. Biederman, (Mon Oct 15, 9:45 pm)
Re: What still uses the block layer?, david, (Mon Oct 15, 10:00 pm)
Re: What still uses the block layer?, Stefan Richter, (Mon Oct 15, 10:56 pm)
Re: What still uses the block layer?, Stefan Richter, (Mon Oct 15, 11:33 pm)
Re: OOM killer gripe (was Re: What still uses the block la ..., Eric W. Biederman, (Tue Oct 16, 2:31 am)
Re: What still uses the block layer?, Alan Cox, (Tue Oct 16, 3:19 am)
Re: What still uses the block layer?, Matthew Wilcox, (Tue Oct 16, 12:54 pm)
Re: What still uses the block layer?, david, (Tue Oct 16, 12:54 pm)
Re: What still uses the block layer?, Stefan Richter, (Tue Oct 16, 1:18 pm)
Re: What still uses the block layer?, Theodore Tso, (Tue Oct 16, 1:34 pm)
Re: What still uses the block layer?, david, (Tue Oct 16, 1:55 pm)
Re: What still uses the block layer?, Stefan Richter, (Tue Oct 16, 1:56 pm)
Re: What still uses the block layer?, Alan Cox, (Tue Oct 16, 2:49 pm)
Re: What still uses the block layer?, Valdis.Kletnieks, (Tue Oct 16, 10:34 pm)
Re: What still uses the block layer?, david, (Tue Oct 16, 11:07 pm)
Re: What still uses the block layer?, Gabor Gombas, (Wed Oct 17, 2:48 am)
Re: What still uses the block layer?, Stefan Richter, (Wed Oct 17, 10:23 am)
Re: What still uses the block layer?, david, (Wed Oct 17, 2:04 pm)
Re: What still uses the block layer?, Bill Davidsen, (Wed Oct 17, 4:43 pm)