On Monday 17 January 2005 16:51, Andy Smith wrote: > > As an aside, when I try this, how come I get this: > > $ sudo hdparm -t /dev/sda /dev/sdb /dev/md0 > > /dev/sda: > Timing buffered disk reads: 152 MB in 3.03 seconds = 50.19 MB/sec > HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl > for device > > /dev/sdb: > Timing buffered disk reads: 152 MB in 3.03 seconds = 50.24 MB/sec > HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl > for device > > /dev/md0: > Timing buffered disk reads: read(2097152) returned 524288 bytes > > (note warnings about ioctls and no speed output for /dev/md0) > > These are SATA drives in a RAID 1. I edited out the "inappropriate ioctl" warnings in my output. Since the drives are not partitions, a flush would indeed be inappropriate. hdparm -t only does read timings anyway. As to why your md0 output is strange - no idea I'm afraid. :( Andrew Walrond - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
