From: Brian King <brking@us.ibm.com>
To: "Bagalkote, Sreenivas" <sreenib@lsil.com>
Cc: Matt Domsch <Matt_Domsch@dell.com>,
'James Bottomley' <James.Bottomley@SteelEye.com>,
"'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>,
"'linux-scsi@vger.kernel.org'" <linux-scsi@vger.kernel.org>,
"'bunk@fs.tum.de'" <bunk@fs.tum.de>,
'Andrew Morton' <akpm@osdl.org>, "Ju, Seokmann" <sju@lsil.com>,
"Doelfel, Hardy" <hdoelfel@lsil.com>,
"Mukker, Atul" <Atulm@lsil.com>
Subject: Re: How to add/drop SCSI drives from within the driver?
Date: Wed, 08 Dec 2004 17:46:38 -0600 [thread overview]
Message-ID: <41B7925E.5070700@us.ibm.com> (raw)
In-Reply-To: <0E3FA95632D6D047BA649F95DAB60E570230CA8C@exa-atlanta>
Bagalkote, Sreenivas wrote:
> Adding a drive:- For application to use sysfs to scan newly added drive,
> it needs to know the HCTL (SCSI address - Host, Channel, Target & Lun)
> of the drive. Driver is the only one that knows the mapping between a
> drive and the corresponding HCTL.
Can you explain from a high level how megaraid adds logical devices?
I assume a management app of some sort sends a command to the adapter
to create a disk array. What interface is used for this?
Does this trigger any notification from the adapter to the device
driver?
> Removing a drive:- There is no sane way for the application to map out
> drives to /dev/sd<x>.
This information is all available in sysfs. Have you looked at libsysfs
at all?
--
Brian King
eServer Storage I/O
IBM Linux Technology Center
next prev parent reply other threads:[~2004-12-08 23:46 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-08 7:16 How to add/drop SCSI drives from within the driver? Bagalkote, Sreenivas
2004-12-08 14:07 ` Matt Domsch
2004-12-08 15:40 ` Matthew Wilcox
2004-12-08 20:08 ` Bryan Henderson
2004-12-08 20:14 ` Arjan van de Ven
2004-12-08 15:59 ` James Bottomley
2004-12-08 23:46 ` Brian King [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-01-26 23:23 Mukker, Atul
2005-01-27 7:05 ` 'Patrick Mansfield'
2005-01-27 7:05 ` 'Patrick Mansfield'
2005-01-26 16:48 Greg KH
2005-01-26 16:48 ` Greg KH
2005-01-25 23:37 Mukker, Atul
2005-01-26 14:48 ` Brian King
2005-01-25 16:27 Mukker, Atul
2005-01-25 16:52 ` Patrick Mansfield
2005-01-21 22:11 Mukker, Atul
2005-01-21 23:58 ` James Bottomley
2005-01-06 14:20 Mukker, Atul
2005-01-06 14:42 ` James Bottomley
2005-01-04 17:25 Bagalkote, Sreenivas
2005-01-04 17:42 ` James Bottomley
2005-01-03 23:02 Bagalkote, Sreenivas
2005-01-03 23:40 ` James Bottomley
2004-12-16 16:51 Salyzyn, Mark
2004-12-16 16:51 ` Salyzyn, Mark
2004-12-16 14:27 Mukker, Atul
2004-12-15 19:42 Mukker, Atul
2004-12-15 20:22 ` Matt Domsch
2004-12-10 0:31 Bagalkote, Sreenivas
2004-12-09 23:37 Bagalkote, Sreenivas
2004-12-10 0:03 ` Matt Domsch
2004-12-09 17:31 Mukker, Atul
2004-12-09 18:00 ` 'Patrick Mansfield'
2004-12-09 14:11 Mukker, Atul
2004-12-09 17:04 ` Patrick Mansfield
2004-12-09 13:27 Salyzyn, Mark
2004-12-09 14:12 ` Arjan van de Ven
2004-12-08 20:49 Salyzyn, Mark
2004-12-08 20:36 Mukker, Atul
2004-12-08 23:26 ` Bryan Henderson
2004-12-08 19:25 Mukker, Atul
2004-12-08 18:42 Salyzyn, Mark
2004-12-08 18:42 ` Salyzyn, Mark
2004-12-08 20:01 ` James Bottomley
2004-12-15 7:24 ` Matt Domsch
2004-12-15 16:48 ` Matt Domsch
2004-12-15 18:55 ` James Bottomley
2004-12-15 18:49 ` James Bottomley
2004-12-15 21:30 ` Matt Domsch
2004-12-16 9:54 ` Arjan van de Ven
2004-12-16 14:41 ` Alan Cox
2004-12-08 17:56 Bagalkote, Sreenivas
2004-12-08 19:06 ` James Bottomley
2004-12-08 14:55 Mukker, Atul
2004-12-03 17:18 Bagalkote, Sreenivas
2004-12-03 15:29 Bagalkote, Sreenivas
2004-12-03 15:58 ` Jan-Benedict Glaw
2004-12-03 16:22 ` Christoph Hellwig
2004-12-03 17:11 ` Matt Domsch
2004-12-03 17:14 ` Matt Domsch
2004-12-03 2:04 Bagalkote, Sreenivas
2004-12-03 15:10 ` Brian King
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