upstream/opnsense-src
1
0
Fork 0
mirror of https://github.com/opnsense/src.git synced 2026-06-09 08:43:19 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

MFC 200968:

Browse source 
Make diskinfo report disk stripe size and offset. It should help users to
make file systems optimally aligned and tuned for better performance.
This commit is contained in:
Alexander Motin 2010-01-05 13:56:58 +00:00
parent 3bf7eb487a
commit ea78eb4204
2 changed files with 13 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
usr.sbin/diskinfo/diskinfo.8
View file

@ -46,7 +46,8 @@ and optionally runs a naive performance test on the device.
.Pp
If given no arguments, the output will be a single line per specified device
with the following fields: device name, sectorsize, media size in bytes,
media size in sectors, firmware cylinders, firmware heads, and firmware sectors.
media size in sectors, stripe size, stripe offset, firmware cylinders,
firmware heads, and firmware sectors.
The last three fields are only present if the information is available.
.Pp
If given the

12
usr.sbin/diskinfo/diskinfo.c
View file

@ -58,7 +58,7 @@ main(int argc, char **argv)
{
int i, ch, fd, error;
char buf[BUFSIZ], ident[DISK_IDENT_SIZE];
off_t mediasize;
off_t mediasize, stripesize, stripeoffset;
u_int sectorsize, fwsectors, fwheads;
while ((ch = getopt(argc, argv, "ctv")) != -1) {
@ -104,11 +104,19 @@ main(int argc, char **argv)
error = ioctl(fd, DIOCGFWHEADS, &fwheads);
if (error)
fwheads = 0;
error = ioctl(fd, DIOCGSTRIPESIZE, &stripesize);
if (error)
stripesize = 0;
error = ioctl(fd, DIOCGSTRIPEOFFSET, &stripeoffset);
if (error)
stripeoffset = 0;
if (!opt_v) {
printf("%s", argv[i]);
printf("\t%u", sectorsize);
printf("\t%jd", (intmax_t)mediasize);
printf("\t%jd", (intmax_t)mediasize/sectorsize);
printf("\t%jd", (intmax_t)stripesize);
printf("\t%jd", (intmax_t)stripeoffset);
if (fwsectors != 0 && fwheads != 0) {
printf("\t%jd", (intmax_t)mediasize /
(fwsectors * fwheads * sectorsize));
@ -124,6 +132,8 @@ main(int argc, char **argv)
(intmax_t)mediasize, buf);
printf("\t%-12jd\t# mediasize in sectors\n",
(intmax_t)mediasize/sectorsize);
printf("\t%-12jd\t# stripesize\n", stripesize);
printf("\t%-12jd\t# stripeoffset\n", stripeoffset);
if (fwsectors != 0 && fwheads != 0) {
printf("\t%-12jd\t# Cylinders according to firmware.\n", (intmax_t)mediasize /
(fwsectors * fwheads * sectorsize));