Ok so I have the same problem. Volume successfully added but it is not.
I have 6 hard drives. I created a mirrored volume using two drives, and then add a further two, and then the final two. previously this worked great. I have a volume with 3 vdevs, each contained a pair of mirrored drives. im just using this whole machine as a test bed.
Now i can add drives to a striped array no problem. but when I try to expand a mirrored pair, it does not work. However, the drives are thought to be used as i can't wipe them until i detach the volume. zpool status by command line gives the same as in freenas.... ie.. nothing has been added...
I have tried to use encryption, but it is NOT enabled for this! All drives can be made into mirrored pairs as a volume, just not extend one.
here is the log window
Feb 7 16:30:03 freenas INADYN[2779]: W:'RC_DYNDNS_RSP_NOTOK' (0x48) updating the IPs. (it 0)
Feb 7 16:30:03 freenas INADYN[2779]: E: The response of DYNDNS svr was an error! Aborting.
Feb 7 16:30:03 freenas INADYN[2779]: W:INADYN: Main: Error 'RC_DYNDNS_RSP_NOTOK' (0x48).
Feb 7 16:39:30 freenas notifier: Will not 'restart' inadyn because inadyn_enable is NO.
Feb 7 16:40:01 freenas kernel: GEOM_ELI: Detached ada2p1.eli on last close.
Feb 7 16:40:05 freenas kernel: GEOM_ELI: Detached ada1p1.eli on last close.
Feb 7 16:40:08 freenas kernel: GEOM_ELI: Detached ada5p1.eli on last close.
Feb 7 16:40:18 freenas kernel: GEOM_ELI: Detached ada4p1.eli on last close.
Feb 7 16:40:27 freenas kernel: GEOM_ELI: Detached ada3p1.eli on last close.
Feb 7 16:40:37 freenas kernel: GEOM_ELI: Detached ada6p1.eli on last close.
Feb 7 16:40:46 freenas notifier: swapoff: removing /dev/ada2p1.eli as swap device
Feb 7 16:40:46 freenas notifier: swapoff: removing /dev/ada1p1.eli as swap device
Feb 7 16:40:46 freenas notifier: swapoff: removing /dev/ada5p1.eli as swap device
Feb 7 16:40:46 freenas notifier: swapoff: removing /dev/ada4p1.eli as swap device
Feb 7 16:40:46 freenas notifier: swapoff: removing /dev/ada3p1.eli as swap device
Feb 7 16:40:46 freenas notifier: swapoff: removing /dev/ada6p1.eli as swap device
Feb 7 16:40:47 freenas notifier: 1+0 records in
Feb 7 16:40:47 freenas notifier: 1+0 records out
Feb 7 16:40:47 freenas notifier: 1048576 bytes transferred in 0.006586 secs (159216831 bytes/sec)
Feb 7 16:40:47 freenas notifier: dd: /dev/ada5: short write on character device
Feb 7 16:40:47 freenas notifier: dd: /dev/ada5: end of device
Feb 7 16:40:47 freenas notifier: 5+0 records in
Feb 7 16:40:47 freenas notifier: 4+1 records out
Feb 7 16:40:47 freenas notifier: 4939776 bytes transferred in 0.050543 secs (97733992 bytes/sec)
Feb 7 16:40:48 freenas notifier: 1+0 records in
Feb 7 16:40:48 freenas notifier: 1+0 records out
Feb 7 16:40:48 freenas notifier: 1048576 bytes transferred in 0.006705 secs (156386108 bytes/sec)
Feb 7 16:40:48 freenas notifier: dd: /dev/ada6: short write on character device
Feb 7 16:40:48 freenas notifier: dd: /dev/ada6: end of device
Feb 7 16:40:48 freenas notifier: 5+0 records in
Feb 7 16:40:48 freenas notifier: 4+1 records out
Feb 7 16:40:48 freenas notifier: 4939776 bytes transferred in 0.050457 secs (97900706 bytes/sec)
Feb 7 16:40:49 freenas notifier: cannot open 'mirror/dev/gptid/202c858d-7145-11e2-bc84-e839352caa53': no such GEOM provider
Feb 7 16:40:49 freenas notifier: must be a full path or shorthand device name
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Device ada2p1.eli created.
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Encryption: AES-XTS 256
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Crypto: software
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Device ada1p1.eli created.
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Encryption: AES-XTS 256
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Crypto: software
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Device ada5p1.eli created.
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Encryption: AES-XTS 256
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Crypto: software
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Device ada4p1.eli created.
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Encryption: AES-XTS 256
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Crypto: software
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Device ada3p1.eli created.
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Encryption: AES-XTS 256
Feb 7 16:41:08 freenas kernel: GEOM_ELI: Crypto: software
Feb 7 16:41:18 freenas kernel: GEOM_ELI: Device ada6p1.eli created.
Feb 7 16:41:18 freenas kernel: GEOM_ELI: Encryption: AES-XTS 256
Feb 7 16:41:18 freenas kernel: GEOM_ELI: Crypto: software
Feb 7 16:41:18 freenas notifier: Stopping collectd.
Feb 7 16:41:27 freenas notifier: Waiting for PIDS: 2821.
Feb 7 16:41:27 freenas notifier: Starting collectd.
Feb 7 16:41:46 freenas notifier: geli: Cannot access ada2p1 (error=1).
Feb 7 16:41:46 freenas notifier: Stopping collectd.
Feb 7 16:41:47 freenas notifier: Waiting for PIDS: 4094.
Feb 7 16:41:47 freenas notifier: Starting collectd.
Feb 7 16:41:47 freenas notifier: Stopping cron.
Feb 7 16:41:47 freenas notifier: Starting cron.
Feb 7 16:45:04 freenas ntpd[2366]: kernel time sync status change 2001