FW6.10.5 iscsi offline on delete snapshot

Hi,

My PCs lost iSCSI connections and smb connections ( lost all shared storages ) with a RN316 at some night maintenance time.

This issue was not happened befor updating f/w from 6.10.4 hotfix1 to 6.10.5 hotfix1.

It looks overloading state on my RN316.

top - 00:56:36 up 2 days, 22 min, 1 user, load average: 12.18, 12.09, 9.26
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2916 root 20 0 0 0 0 R 99.1 0.0 32:12.61 btrfs-transacti
10372 root 20 0 44900 5828 4624 R 93.2 0.1 102:19.55 ssh
10375 root 20 0 24000 2260 2084 S 86.2 0.1 83:45.08 btrfs
9847 root 20 0 57952 7072 5392 R 23.1 0.2 25:47.04 replisync
669 root 20 0 0 0 0 S 3.3 0.0 61:44.95 kswapd0
14725 yshin 20 0 28764 3132 2568 R 1.0 0.1 0:00.13 top
1300 root 0 -20 0 0 0 R 0.7 0.0 0:50.23 kworker/2:1H

Does someon have same issue ?

Thanks.