Resizing a zpool as a VMware ESXi guest ...

Matthew Grooms mgrooms at
Sat Oct 18 20:58:08 UTC 2014

On 10/16/2014 3:17 AM, Garrett Cooper wrote:
>> On Oct 16, 2014, at 1:10, Edward Tomasz Napierała
>> <trasz at> wrote:
>> "camcontrol rescan" does not force fetching the updated disk size.
>> AFAIK there is no way to do that.  However, this should happen
>> automatically, if the "other side" properly sends proper Unit
>> Attention after resizing.  No idea why this doesn't happen with
>> VMWare. Reboot obviously clears things up.
>> [..]
> Is open-vm-tools installed?
> I ask because if I don't have it installed and the kernel modules
> loaded, VMware doesn't notify the guest OS of disks being
> added/removed.

VMware tools were not installed at the time. I'll try that, but I doubt 
it will make a difference for resizing.

> Also, what disk controller are you using?

The ESXi 5.5 default controller for FreeBSD, LSI Logic Parallel ...

mpt0 at pci0:0:16:0:	class=0x010000 card=0x197615ad chip=0x00301000 
rev=0x01 hdr=0x00
     vendor     = 'LSI Logic / Symbios Logic'
     device     = '53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI'
     class      = mass storage
     subclass   = SCSI

I'll try it with the LSI Logic SAS controller as well to see if that 
makes a difference.


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