I am trying to set up a new OTRS 3.0.3 schema in MySQL (to receive 3.0.3 data from MSSQL before I upgrade the server to 3.1).  The relevant(?) my.ini excerpts are below:

[mysql]
default-character-set=utf8
[mysqld]
character-set-server=utf8
default-storage-engine=INNODB
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

When I  run the otrs-schema.mysql script I get two warnings (below).   Are these harmless?   Can I make a change to the OTRS configuration to avoid them?


# ---------------------------------------------------------- #  create table virtual_fs # ----------------------------------------------------------
CREATE TABLE virtual_fs (     id BIGINT NOT NULL AUTO_INCREMENT,     filename TEXT NOT NULL,     backend VARCHAR (60) NOT NULL,     backend_key VARCHAR (160) NOT NULL,     create_time DATETIME NOT NULL,     PRIMARY KEY(id),     INDEX virtual_fs_backend (backend(60)),     INDEX virtual_fs_filename (filename(350)) )   
0 row(s) affected, 1 warning(s): 1071 Specified key was too long; max key length is 767 bytes

# ---------------------------------------------------------- #  create table virtual_fs_db # ----------------------------------------------------------
CREATE TABLE virtual_fs_db (     id BIGINT NOT NULL AUTO_INCREMENT,     filename TEXT NOT NULL,     content LONGBLOB NOT NULL,     create_time DATETIME NOT NULL,     PRIMARY KEY(id),     INDEX virtual_fs_db_filename (filename(350)) )   
0 row(s) affected, 1 warning(s): 1071 Specified key was too long; max key length is 767 bytes