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target: Fix trailing ASCII space usage in INQUIRY vendor+model
This patch fixes spc_emulate_inquiry_std() to add trailing ASCII
spaces for INQUIRY vendor + model fields following SPC-4 text:
"ASCII data fields described as being left-aligned shall have any
unused bytes at the end of the field (i.e., highest offset) and
the unused bytes shall be filled with ASCII space characters (20h)."
This addresses a problem with Falconstor NSS multipathing.
Reported-by: Tomas Molota <tomas.molota@lightstorm.sk>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>