I have been having problems with systems getting I/O errors and dropping mounted filesystems, when it is processing a RCSN caused by some other event on the fabric within its' zone. If I unset BIO_RW_FAILFAST in dm-mpath.c I no longer get the I/O errors and of course no filesystem drops. Are there any plans to change this, or make it a settable option? Are there any negatives to not setting it? Andy
