On 2016-09-16 01:04, Zaphod Beeblebrox wrote: > > > > Are you using zvols to back the VMs? Make sure they are in 'volmode=dev' > not 'geom' (the default), or GEOM will lock the device when it detects a > partition table being written to the zvol (from the installer inside > the VM) > > Note that this setting requires you to export/import the pool or reboot > to apply. > > > No, no. The whole point here is that I was booting the raw disk. > "ada1" as it were. >
You might try the dangerous 'shoot yourself in the foot mode' for geom:
man 4 geom:
0x10 (allow foot shooting)
Allow writing to Rank 1 providers. This would, for example,
allow the super-user to overwrite the MBR on the root disk or
write random sectors elsewhere to a mounted disk. The
implications are obvious.
sysctl kern.geom.debugflags=16
--
Allan Jude
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