- LBA in diskperf;
- Posted by krish on June 10th, 2008
How can I obtain the Logical Block Address (LBA) on the disk of a
write/read request in the diskperf? The current IO stack location in
diskperf has: currentIrpStack->Parameters.Read.ByteOffset.QuadPart
which I think is the byte offset with in a file. Thanks.
- Posted by Don Burn on June 11th, 2008
It is the byte offset in the partition. You can use the
IOCTL_DISK_GET_PARTION_INFO to get the base address of the partition.
--
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
Website: http://www.windrvr.com
Blog: http://msmvps.com/blogs/WinDrvr
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- Posted by krish on June 11th, 2008
On Jun 10, 5:03 pm, "Don Burn" <b...@stopspam.windrvr.com> wrote:
(disk.c). After getting the partition information (as per your
suggestion), I also need to use IOCTL_DISK_GET_DRIVE_GEOMETRY to get
the sector size etc to obtain the correct LBA. Right?
- Posted by krish on June 11th, 2008
Also in the following thread Maxim says that just divide
currentIrpStack->Parameters.Read.ByteOffset.QuadPart by sector size to
get the LBA which I think would be wrong if it currentIrpStack-
http://groups.google.com/group/micro...f92a44 1548ea
On Jun 10, 5:31 pm, krish <pradeep_bi...@yahoo.com> wrote:
- Posted by Don Burn on June 11th, 2008
Krish,
I messed up yesterday (under the weather) Max is correct just devide
the byteoffset by the LBA size.
--
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
Website: http://www.windrvr.com
Blog: http://msmvps.com/blogs/WinDrvr
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- Posted by krish on June 11th, 2008
Thanks Don.
On Jun 11, 4:34 am, "Don Burn" <b...@stopspam.windrvr.com> wrote:
