On Thu, 2009-07-30 at 18:24 +0530, Srinivasa R Chamarthy wrote: > Hello, > > I am running blktrace against scsi disks on linux. I get the > following output which i am not able to infer some of the messages > in it. > > 2057,8440 1 8043 0.580951687 2047 A W 14666 + 1 <- > (253,0) 14666 > 8,0 1 8044 0.580951812 2047 Q W 14666 + 1 > [mkfs.ext3] > 8,0 1 8045 0.580952000 2047 M W 14666 + 1 > [mkfs.ext3] > 2057,8440 1 8046 0.580953656 2047 A W 14667 + 1 <- > (253,0) 14667 > 8,0 1 8047 0.580953781 2047 Q W 14667 + 1 > [mkfs.ext3] > 8,0 1 8048 0.580953968 2047 M W 14667 + 1 > [mkfs.ext3] > 2057,8440 1 8049 0.580955406 2047 A W 14668 + 1 <- > (253,0) 14668 > 8,0 1 8050 0.580955718 2047 Q W 14668 + 1 > [mkfs.ext3] > > For some of the lines, it shows the list of major and minor numbers > (2057,8440) which are not there applicable to my system. I am not > able to understand the output pertaining to these numbers and i do > not find any documentation about them. Can anybody let me know what > this output means? > > I have run blktrace as following: > > blktrace -d /dev/sda /dev/sdb -o - | blkparse -i - > > and ran mkfs.ext3 to the scsi disks. > What Linux version are you using? Issues in MD/DM mappings were fixed in kernels post-RHEL5/SLES10 for example. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-btrace" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
