zfs resilver keeps restarting

[Marc UBM Bocklet]

Hi all,

due to two bad cables, I had two drives drop from my striped raidz2
pool (built on top of geli encrypted drives). I replaced one of the
drives before I realized that the cabling was at fault - that's the
drive which is being replaced in the ouput of zpool status below.

I have just installed the new cables and all sata errors are gone.
However, the resilver of the pool keeps restarting.

I see no errors in /var/log/messages, but zpool history -i says:

2016-09-18.14:56:21 [txg:1219501] scan setup func=2 mintxg=3
maxtxg=1219391 2016-09-18.14:56:51 [txg:1219505] scan done complete=0
2016-09-18.14:56:51 [txg:1219505] scan setup func=2 mintxg=3
maxtxg=1219391 2016-09-18.14:57:20 [txg:1219509] scan done complete=0
2016-09-18.14:57:20 [txg:1219509] scan setup func=2 mintxg=3
maxtxg=1219391 2016-09-18.14:57:49 [txg:1219513] scan done complete=0
2016-09-18.14:57:49 [txg:1219513] scan setup func=2 mintxg=3
maxtxg=1219391 2016-09-18.14:58:19 [txg:1219517] scan done complete=0
2016-09-18.14:58:19 [txg:1219517] scan setup func=2 mintxg=3
maxtxg=1219391 2016-09-18.14:58:45 [txg:1219521] scan done complete=0
2016-09-18.14:58:45 [txg:1219521] scan setup func=2 mintxg=3
maxtxg=1219391

I assume that "scan done complete=0" means that the resilver didn't
finish?

pool layout is the following:

 pool: pool
 state: DEGRADED
status: One or more devices is currently being resilvered.  The pool
will continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
  scan: resilver in progress since Sun Sep 18 14:51:39 2016
        235G scanned out of 9.81T at 830M/s, 3h21m to go
        13.2M resilvered, 2.34% done
config:

        NAME                        STATE     READ WRITE CKSUM
        pool                        DEGRADED     0     0     0
          raidz2-0                  ONLINE       0     0     0
            da6.eli                 ONLINE       0     0     0
            da7.eli                 ONLINE       0     0     0
            ada1.eli                ONLINE       0     0     0
            ada2.eli                ONLINE       0     0     0
            da10.eli                ONLINE       0     0     2
            da11.eli                ONLINE       0     0     0
            da12.eli                ONLINE       0     0     0
            da13.eli                ONLINE       0     0     0
          raidz2-1                  DEGRADED     0     0     0
            da0.eli                 ONLINE       0     0     0
            da1.eli                 ONLINE       0     0     0
            da2.eli                 ONLINE       0     0     1
(resilvering) 
	    replacing-3             DEGRADED     0     0     1
              10699825708166646100  UNAVAIL      0     0     0
was /dev/da3.eli da4.eli            ONLINE       0     0     0
(resilvering) 
            da3.eli                 ONLINE       0     0     0
            da5.eli                 ONLINE       0     0     0
            da8.eli                 ONLINE       0     0     0
            da9.eli                 ONLINE       0     0     0

errors: No known data errors

system is 
FreeBSD xxx 10.1-BETA1 FreeBSD 10.1-BETA1 #27 r271633:
Mon Sep 15 22:34:05 CEST 2014
root at xxx:/usr/obj/usr/src/sys/xxx  amd64

controller is
SAS2116 PCI-Express Fusion-MPT SAS-2 [Meteor]

Drives are connected via four four-port sata cables.

Should I upgrade to 10.3-release or did I make some sort of
configuration error / overlook something?

Thanks in advance!

Cheers,
Marc