-- Matt Schillinger <mschilli@vss.fsi.com>
this should be a simple question, but I can't find a direct discussion
in the lvm documentation. I believe that i have found that LVM will find
appropriate PV's regardless of their name (sda,sdb).. Is this true? Do i
need devfs to ensure that i always have the same disk naming, or will
LVM handle this for me? I am currently using scsidev for naming
purposes, but have found that vgcreate will not work with scsidev device
names (/dev/scsi/sdh0-0c0i4l2p1)
/dev/scsi/sd(host=0,scsiid=4,LUN=2,partition #=1)
sd[abcd] notation is based on the order which the kernel
finds devices on the bus. Adding a SCSI card or removing
disks will change the naming.
devfs allows using /dev/scsi/.../busX/.../targetY/.../partZ,
which will not change unless you shuffle the scsi cards :-)
I use it mainly because I prefer to know what I'm pointing
at -- memorizing the device letter conventions can be an
exercise in futility.
You can quickly convert from one naming convention to
the other if your root volume isn't on LVM: boot single
user, export the VG's and import them using the devfs
naming convention.
-
Steven Lembark 2930 W. Palmer
Workhorse Computing Chicago, IL 60647
+1 773 252 1080
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