ZFS panic on zvol resize

[Vladislav Prodan]

 --- Original message ---
 From: "Kristof Provost" <kristof at sigsegv.be>
 Date: 4 July 2014, 22:48:00
  


> Hi,
> 
> On current r268263 (and also on stable-10 r268263) I can reliably panic
> the machine by simply attempting to resize a zvol:
> 
> # zfs create tank/zvol
> # zfs set mountpoint=none tank/zvol
> # zfs create -V100G tank/zvol/disk0
> # zfs set volsize=200G tank/zvol/disk0
> 
> It produces the following panic:

r268271
# uname -a
FreeBSD vm-10-2.domain.com 10.0-STABLE FreeBSD 10.0-STABLE #0: Sat Jul  5 04:38:25 EEST 2014     root at vm-10-2.domain.com:/usr/obj/usr/src/sys/vm-10-2.3  amd64

This sequence of commands does not cause panic:
zfs create zroot/zvol
zfs set mountpoint=none zroot/zvol
zfs create -V1G zroot/zvol/disk0
zfs set volsize=2G zroot/zvol/disk0


Do you recommend to install revision r268263 and check again? or use larger disks - 200-400GB?


--
 Vladislav V. Prodan
 System & Network Administrator
 support.od.ua