I have an Oracle Enterprise Linux 5.5 server which is a virtual guest on a vSphere host.
I have provisioned 500GB disk space from SAN. I then migrated the VM from a 200GB disk onto the new 500GB disk. I then increased the disk space allocated to the VMware to the maximum size of 500GB which all went without a problem.
I am having an issue where i want to make the Linux kernel see the extra provisioned space.
when i try to run the following command which should rescan the scsi disks it doesnt seem to run the scan:
it just returns to the prompt and when i do an ls -l the scan file appears to just be wiped out, not even that it replaced the contents with - - -.
So i rebooted the box and it saw the extra disk and the scan file returned to the original size of 4096.
My question is, i currently have 9 Linux servers and will have about 20 by the time i finish building the rest, hot-adding disk would be very useful but could anyone give me some advice on how to do it, or what i did wrong with the scan file?
Another option would be to find the script (open sourced) rescan_scsi_bus.sh
that will do what you need.
Unfortunately that did not do what i need. This scan's for new devices, as its not a new device its just an extension of an existing device it doesn't find anything.
I need something that will see that there is extra disk space available.
As you can see, it thinks there is only 1 available disk of size 139.5GB, if i increase the size of the disk space by 5GB on the Virtual Host i want fdisk to be able to see that without a reboot.
I have also tried creating a new partition to see if it knows to update to the last cyclinder instead of the 139.5GB end cyclinder, but this didnt work either.
can i manually edit or is there a command to edit one of the /proc files or a /dev file?
I had a look at those but they are only for file system sizing.
Quote:
i thing without reboot u cont get it
just a try
run kudzu and check it
It shows the hardware device /dev/sda but it doesnt seem to pick up on the allocated size at all.
Thanks for the effort but i will keep looking and if i find anything will let you know, or if you do happen to think of anything else its always worth a try.
Last edited by Tommyk; 09-26-2011 at 05:10 AM..
Reason: quote
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