...

If fscking is required ... TODO 

Issue investigation

How to identify

...

which /dev/sd[a-z]+

...

are iSCSI

...

devices

The easiest way is to list /dev/disk/by-path/:

ls -l /dev/disk/by-path/ | grep 'ip-.*iqn\.'

If lshw is installed, more information is available by

lshw -class disk -class storage

hdparm doesn't work on iSCSI devices.  When smartctl was tried there was a server/target kernel iSCSI target abort task on the for iSCSI target/initiator.