On Thu, 2011-09-29 at 13:27 -0500, James Bottomley wrote: > On Thu, 2011-09-29 at 14:49 +0530, Amit Sahrawat wrote: > > The patch did not work, although it did get pass the earlier condition > > which I mentioned- but still Write Cache is not taken into account – > > seems mode sensing in sd_read_cache_type() does not send proper > > request to the device – or does not read in proper bytes for this(as > > per hdparm command analysis): > > > > Logs After Connecting: > > scsi 0:0:0:0: Direct-Access Seagate Portable 0130 PQ: 0 ANSI: 4 > > sd 0:0:0:0: [sda] 488397168 512-byte logical blocks: (250 GB/232 GiB) > > sd 0:0:0:0: [sda] Write Protect is off > > sd 0:0:0:0: [sda] No Caching mode page present > > This line means that a request for page 0x0 didn't turn up the caching > mode page in the list of supported pages. > > What does > > sg_inq --page=0x0 /dev/sda Um, lets try that again, this time with the correct information. What we're looking for is the list of mode pages, so sg_modes --page=0x3f /dev/sda Should return it. Thanks, James -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
