ZFS root problem after iscsi target experiment

Question

Hello all.
I need help with this situation... I've installed solaris 10u6, patched, created branded full zone. Everything went well until I started to experiment with iSCSI target according to this document: http://docs.sun.com/app/docs/doc/817-5093/fmvcd?l=en&a=view&q=iscsi
After setting up iscsi discovery address of my iscsi target solaris hung up and the only way was to send break from service console. Then I got these messages during boot
SunOS Release 5.10 Version Generic_138888-01 64-bit
/dev/rdsk/c5t216000C0FF8999D1d0s0 is clean
Reading ZFS config: done.
Mounting ZFS filesystems: (1/6)cannot mount 'root': mountpoint or dataset is busy
(6/6)
svc:/system/filesystem/local:default: WARNING: /usr/sbin/zfs mount -a failed: exit status 1
Jan 23 14:25:42 svc.startd[7]: svc:/system/filesystem/local:default: Method "/lib/svc/method/fs-local" failed with exit status 95.
Jan 23 14:25:42 svc.startd[7]: system/filesystem/local:default failed fatally: transitioned to maintenance (see 'svcs -xv' for details)
---- There are many affected services from this error, unfortunately one of them is system-log, so I cannot find any relevant information why this happens.
bash-3.00# svcs -xv
svc:/system/filesystem/local:default (local file system mounts)
State: maintenance since Fri Jan 23 14:25:42 2009
Reason: Start method exited with $SMF_EXIT_ERR_FATAL.
See: http://sun.com/msg/SMF-8000-KS
See: /var/svc/log/system-filesystem-local:default.log
Impact: 32 dependent services are not running:
svc:/application/psncollector:default
svc:/system/webconsole:console
svc:/system/filesystem/autofs:default
svc:/system/system-log:default
svc:/milestone/multi-user:default
svc:/milestone/multi-user-server:default
svc:/system/basicreg:default
svc:/system/zones:default
svc:/application/graphical-login/cde-login:default
svc:/system/iscsitgt:default
svc:/application/cde-printinfo:default
svc:/network/smtp:sendmail
svc:/network/ssh:default
svc:/system/dumpadm:default
svc:/system/fmd:default
svc:/system/sysidtool:net
svc:/network/rpc/bind:default
svc:/network/nfs/nlockmgr:default
svc:/network/nfs/status:default
svc:/network/nfs/mapid:default
svc:/application/sthwreg:default
svc:/application/stosreg:default
svc:/network/inetd:default
svc:/system/sysidtool:system
svc:/system/postrun:default
svc:/system/filesystem/volfs:default
svc:/system/cron:default
svc:/application/font/fc-cache:default
svc:/system/boot-archive-update:default
svc:/network/shares/group:default
svc:/network/shares/group:zfs
svc:/system/sac:default
[ Jan 23 14:25:40 Executing start method ("/lib/svc/method/fs-local") ]
WARNING: /usr/sbin/zfs mount -a failed: exit status 1
[ Jan 23 14:25:42 Method "start" exited with status 95 ]
Finaly there is output of zpool list command, where everything about ZFS pools looks OK:
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
root 68G 18.5G 49.5G 27% ONLINE -
storedgeD2 404G 45.2G 359G 11% ONLINE -
I would appretiate any help.
thanks in advance,
Berrosch

Answer 1

OK, i've tryied to install s10u6 to default rpool and move root user to /rpool directory (which it is nonsense of course, it was just for this testing purposes) and everything went OK.
Another experiment was with rootpool name 'root' and root user in /root, everything went OK as well.
Next try was with rootpool 'root', root user in /root, enabling iscsi initiator:
# svcs -a |grep iscsi
disabled 16:31:07 svc:/network/iscsi_initiator:default
# svcadm enable iscsi_initiator
# svcs -a |grep iscsi
online 16:34:11 svc:/network/iscsi_initiator:default
and voila! the problem is here...
Mounting ZFS filesystems: (1/5)cannot mount 'root': mountpoint or dataset is busy
(5/5)
svc:/system/filesystem/local:default: WARNING: /usr/sbin/zfs mount -a failed: exit status 1
Feb 9 16:37:35 svc.startd[7]: svc:/system/filesystem/local:default: Method "/lib/svc/method/fs-local" failed with exit status 95.
Feb 9 16:37:35 svc.startd[7]: system/filesystem/local:default failed fatally: transitioned to maintenance (see 'svcs -xv' for details)
Seems to be a bug in iscsi implementation, some quotas of 'root' in source code or something like it...
Martin