Hey guys,
I need to use iostat to diagnose a disk latency problem we think we may be having.
So if I have this disk partition:
[root@uszmpdblp010la mysql]# df -h /mysql Filesystem Size Used Avail Use% Mounted on /dev/mapper/MysqlVG-MysqlVol 9.9G 1.1G 8.4G 11% /mysql
And I want to correlate that to the output of fdisk -l, so that I can feed the disk partition I want to iostat, how would I go about that?
Here is my output from fdisk -l
[root@uszmpdblp010la mysql]# fdisk -l
Disk /dev/cciss/c0d0: 146.7 GB, 146778685440 bytes 255 heads, 32 sectors/track, 35132 cylinders Units = cylinders of 8160 * 512 = 4177920 bytes
Device Boot Start End Blocks Id System /dev/cciss/c0d0p1 * 1 120 488281 83 Linux Partition 1 does not end on cylinder boundary. /dev/cciss/c0d0p2 121 35131 142841947+ 8e Linux LVM Partition 2 does not end on cylinder boundary.
Disk /dev/cciss/c0d1: 1199.8 GB, 1199865640960 bytes 255 heads, 32 sectors/track, 287192 cylinders Units = cylinders of 8160 * 512 = 4177920 bytes
Device Boot Start End Blocks Id System /dev/cciss/c0d1p1 1 287192 1171743344 8e Linux LVM
Disk /dev/dm-0: 2147 MB, 2147483648 bytes 255 heads, 63 sectors/track, 261 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-0 doesn't contain a valid partition table
Disk /dev/dm-1: 2147 MB, 2147483648 bytes 255 heads, 63 sectors/track, 261 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-1 doesn't contain a valid partition table
Disk /dev/dm-2: 4294 MB, 4294967296 bytes 255 heads, 63 sectors/track, 522 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-2 doesn't contain a valid partition table
Disk /dev/dm-3: 6442 MB, 6442450944 bytes 255 heads, 63 sectors/track, 783 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-3 doesn't contain a valid partition table
Disk /dev/dm-4: 6442 MB, 6442450944 bytes 255 heads, 63 sectors/track, 783 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-4 doesn't contain a valid partition table
Disk /dev/dm-5: 6442 MB, 6442450944 bytes 255 heads, 63 sectors/track, 783 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-5 doesn't contain a valid partition table
Disk /dev/dm-6: 17.1 GB, 17179869184 bytes 255 heads, 63 sectors/track, 2088 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-6 doesn't contain a valid partition table
Thanks, Tim