spdk: save log also to file for later debug

Signed-off-by: Boris Glimcher <Boris.Glimcher@emc.com>

Author: glimchb

docker-compose.yml

@@ -28,7 +28,7 @@ services:
             echo 1024 > /proc/sys/vm/nr_hugepages && \
             grep "" /sys/kernel/mm/hugepages/hugepages-*/nr_hugepages && \
             dd if=/dev/zero of=/tmp/aio_bdev_file bs=512 count=64 && \
-            /usr/local/bin/spdk_tgt -m 0x1 -s 512 --no-pci -S /var/tmp 2>&1 & \
+            /usr/local/bin/spdk_tgt -m 0x1 -s 512 --no-pci -S /var/tmp |& tee /tmp/spdk.log & \
             for i in `seq 1 10`; do ./rpc.py spdk_get_version && break || sleep 1; done  && \
             ./rpc.py bdev_malloc_create -b Malloc0 64 512 && \
             ./rpc.py bdev_malloc_create -b Malloc1 64 512 && \