From: Christophe Varoqui <christophe.varoqui@xxxxxxx> Subject: SG TUR and AIO Date: Thu, 14 Jun 2007 00:59:03 +0200 > Hi, > > I'm trying to make multipath daemon checking asynchronous, and most path > checkers use SG. Please bare with some questions on this wild wild topic > (to search engine criteria). > > Is it possible to submit through AIO (libaio API) any SG command forged > with struct sg_io_hdr ? > > I've seen the INQ example in the sg3_utils package, so I guess it should > work there. But what about "Test Unit Ready" command ? I don't think that it is supported though sg_simple_aio.c uses io_submit(). > Also why in the example, only the SG IO write is asynchronous ? Is the > inquiry response read qaranteed to be non-blocking ? Would an pread io > work at all ? > > Is there other pointers to code snippets showing these two subsystems > together ? I think that you can handle a SG command asynchronously by using read/write interface with a non-blocking fd. - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
