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| author | mav <mav@FreeBSD.org> | 2009-12-24 11:05:23 +0000 |
|---|---|---|
| committer | mav <mav@FreeBSD.org> | 2009-12-24 11:05:23 +0000 |
| commit | f90d8324367d5d579faf67e2a84261d958916058 (patch) | |
| tree | a2fd3264b860fd9b4d26648a1c3776d37606a4b0 /sys/sys/disk.h | |
| parent | 5908bf1b9fa686f7864c16aae75e08714dc56192 (diff) | |
| download | FreeBSD-src-f90d8324367d5d579faf67e2a84261d958916058.zip FreeBSD-src-f90d8324367d5d579faf67e2a84261d958916058.tar.gz | |
Add two disk ioctls, giving user-level tools information about disk/array
stripe (optimal access block) size and offset.
Diffstat (limited to 'sys/sys/disk.h')
| -rw-r--r-- | sys/sys/disk.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sys/sys/disk.h b/sys/sys/disk.h index 4fe2e09..422229e 100644 --- a/sys/sys/disk.h +++ b/sys/sys/disk.h @@ -104,4 +104,16 @@ void disk_err(struct bio *bp, const char *what, int blkdone, int nl); * must be at least MAXPATHLEN bytes long. */ +#define DIOCGSTRIPESIZE _IOR('d', 139, off_t) /* Get stripe size in bytes */ + /*- + * Get the size of the device's optimal access block in bytes. + * This should be a multiple of the sectorsize. + */ + +#define DIOCGSTRIPEOFFSET _IOR('d', 140, off_t) /* Get stripe offset in bytes */ + /*- + * Get the offset of the first device's optimal access block in bytes. + * This should be a multiple of the sectorsize. + */ + #endif /* _SYS_DISK_H_ */ |
