What is this error about

[antocara]

Hi,
I got the following error out of dmesg |grep error command:

root@TNAS-01573E:/# dmesg | grep err
[ 0.000000] CPU features: enabling workaround for ARM erratum 845719
[ 7.512503] ***WARNING***: Unable to find /var/lib/scst/vdev_mode_pages (err -2), saved mode pages disabled. You should create this directory manually or reinstall SCST
[ 10.211614] hub 6-0:1.0: config failed, hub doesn't have any ports! (err -19)
[ 17.989913] ata1: COMRESET failed (errno=-16)
[ 17.999914] ata2: COMRESET failed (errno=-16)
[ 41.483252] xt_ipvs: Unknown symbol ip_vs_proto_get (err 0)
[ 41.551339] xt_ipvs: Unknown symbol ip_vs_proto_get (err 0)
[ 41.601544] xt_ipvs: Unknown symbol ip_vs_proto_get (err 0)
[ 41.650503] xt_ipvs: Unknown symbol ip_vs_proto_get (err 0)
[ 247.999868] md: md8: recovery interrupted.
[ 248.123588] md: md8: recovery interrupted.
What is it about and how I can reinstall SCST

[TMSupport]

These are some commands about system boot, which will not affect your normal use.