Date: Thu, 24 Dec 2009 11:05:23 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r200934 - in head/sys: geom sys Message-ID: <200912241105.nBOB5Nou028491@svn.freebsd.org>
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Author: mav Date: Thu Dec 24 11:05:23 2009 New Revision: 200934 URL: http://svn.freebsd.org/changeset/base/200934 Log: Add two disk ioctls, giving user-level tools information about disk/array stripe (optimal access block) size and offset. Modified: head/sys/geom/geom_dev.c head/sys/sys/disk.h Modified: head/sys/geom/geom_dev.c ============================================================================== --- head/sys/geom/geom_dev.c Thu Dec 24 10:43:44 2009 (r200933) +++ head/sys/geom/geom_dev.c Thu Dec 24 11:05:23 2009 (r200934) @@ -323,7 +323,12 @@ g_dev_ioctl(struct cdev *dev, u_long cmd return (ENOENT); strlcpy(data, pp->name, i); break; - + case DIOCGSTRIPESIZE: + *(off_t *)data = cp->provider->stripesize; + break; + case DIOCGSTRIPEOFFSET: + *(off_t *)data = cp->provider->stripeoffset; + break; default: if (cp->provider->geom->ioctl != NULL) { error = cp->provider->geom->ioctl(cp->provider, cmd, data, fflag, td); Modified: head/sys/sys/disk.h ============================================================================== --- head/sys/sys/disk.h Thu Dec 24 10:43:44 2009 (r200933) +++ head/sys/sys/disk.h Thu Dec 24 11:05:23 2009 (r200934) @@ -104,4 +104,16 @@ void disk_err(struct bio *bp, const char * 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_ */
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