Messages in this thread | | | Date | Fri, 11 Apr 2003 11:12:32 -0700 | From | Patrick Mansfield <> | Subject | Re: [patch for playing] Patch to support 4000 disks and maintain |
| |
On Fri, Apr 11, 2003 at 10:57:37AM -0700, Joel Becker wrote:
> > Fortunately, the multipath solution Mike Anderson & Patrick Mansfield > > working on, colapses all the disks you see thro multiple paths into > > number of realdisks (4000). So you don't really need extra devices > > to support multipathing. > > Yes, but what if I want to see the multiple paths? Does their > solution allow you to specify the path behind the 'realdisk'? Does it > allow querying of the paths? > > Joel
Seeing the path to disk relationship - yes (via proc for now, eventually via sysfs).
Specifying from user space what path goes with what disk (explicitly): no, that might require user level scanning.
Query a path - seeing and setting path states yes (via proc right now). Using sg with a specified path - no, but on the TODO list.
I'm trying to pull the current multi-path patch up to 2.5.66 (ouch).
The last functioning patch was against 2.5.59, some general info:
http://www-124.ibm.com/storageio/multipath/scsi-multipath/index.php
Or the patch:
http://www-124.ibm.com/storageio/multipath/scsi-multipath/releases/2.5.59-mpath-1.patch.gz
-- Patrick Mansfield - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |