[SLE] LVM devices, LUNs, and several questions
From: Eric Wagar (eric_at_deadhookers.org)
Date: Tue, 21 Jun 2005 10:03:36 -0700 To: firstname.lastname@example.org, email@example.com
I currently have six systems that all have SAN LUNS mounted as
/dev/sdL#. The LUNS are also visible in /dev/scsi as some format I
can't completely figure out. The /dev/scsi is:
I believe the sgh# is the controller on the system while the l# is the
LUN as presented from the SAN device.
1. What's all the stuff in between?
2. I seem to be using a qla2300 driver. Does this drive provide the
ability to do failover, or is that a function of the OS?
3. If I have the need to unmount system1:/dev/sda1 and mount it on
system2, what will /dev/sda1 be mapped as on system2?
4. Would it better to have the devices in a LVM, would #3 be easier to
5. With LVM is there a way to control which system has access to the
LVM at any given time? (In SGI XLV, there is a "nodename" definition
for each XLV. I see a "System ID" in the vgdisplay, does this "System
ID" correspond to the "nodename" concept in XLV?
6. Where is an excellent starting guide for LVM?
-- Check the headers for your unsubscription address For additional commands send e-mail to firstname.lastname@example.org Also check the archives at http://lists.suse.com Please read the FAQs: email@example.com