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Friday, October 22, 2010

RHEL/CentOS 5.X Test Bed - ISCSI Over TCP/IP + RAID5 + LVM + EXT3

I am trying to create a testbed for practice for the following in
Subject line..

1) But the thing is that i have only one HDD in my box.. The issue
that i am having is i am creating empty files using the 'dd' command.
attaching the files to a loopX device, i can get the RAID5 working..
but as soon as i try to top LVM on top of RAID 5, i get some error of
some sort about otcl..

is there any way i cant get this to work?

2) The other way i got working was,, i created 4 empty files using
'dd'.. attached to to iscsi target, client connects through iscsi
initiator, client see new LUN/HDD as sdX, than i create RAID5, Than
LVM on top, Than Ext3, this works

But as i soon as i reboot, the order everything comes up as fails, LVM
starts first before MD Dameon, MD Dameon starts before ISCSI
initiator, so everything fails. So for this to work the correct way
for me, i need option 1

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