I''m currently running a Sun Fire V880 with snv_134, but would like to upgrade the machine to a self-built snv_144. Unfortunately, boot environment creation fails: # beadm create snv_134-svr4 Unable to create snv_134-svr4. Mount failed. In truss output, I find 2514: mount("rpool", "/rpool", MS_OPTIONSTR, "zfs", 0x00000000, 0, 0xFFBFA170, 1024) Err#2 ENOENT I can reproduce the failure with # zfs mount rpool cannot mount ''rpool'': No such file or directory but /rpool exists and is empty. Non-default properties for the dataset are # zfs get -s local all rpool NAME PROPERTY VALUE SOURCE rpool mountpoint /rpool local rpool compression on local rpool canmount noauto local No defaulting of mountpoint and/or canmount did make a difference. This very much looks like 6741948 ZFS pool root dataset sometimes fails to be mounted after "zpool import" which was closed as not reproducible. I''ve no idea how to avoid/fix this issue. Suggestions? Thanks. Rainer -- ----------------------------------------------------------------------------- Rainer Orth, Center for Biotechnology, Bielefeld University