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position, see if there is a failed component still hanging around that we can use instead (but still mark it as failed). This leads to more reasonable behaviour (and fewer surprises!) when autoconfiguring and failed (or previously failed) components are still on the system.
141 lines
5.8 KiB
C
141 lines
5.8 KiB
C
/* $NetBSD: rf_netbsd.h,v 1.12 2000/05/28 22:53:49 oster Exp $ */
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/*-
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* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Greg Oster; Jason R. Thorpe.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RF__RF_NETBSDSTUFF_H_
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#define _RF__RF_NETBSDSTUFF_H_
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#ifdef _KERNEL
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#include <sys/fcntl.h>
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#include <sys/systm.h>
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#include <sys/namei.h>
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#include <sys/vnode.h>
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#endif /* _KERNEL */
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/* The per-component label information that the user can set */
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typedef struct RF_ComponentInfo_s {
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int row; /* the row number of this component */
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int column; /* the column number of this component */
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int serial_number; /* a user-specified serial number for this
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RAID set */
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} RF_ComponentInfo_t;
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/* The per-component label information */
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typedef struct RF_ComponentLabel_s {
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int version; /* The version of this label. */
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int serial_number; /* a user-specified serial number for this
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RAID set */
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int mod_counter; /* modification counter. Changed (usually
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by incrementing) every time the label
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is changed */
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int row; /* the row number of this component */
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int column; /* the column number of this component */
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int num_rows; /* number of rows in this RAID set */
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int num_columns; /* number of columns in this RAID set */
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int clean; /* 1 when clean, 0 when dirty */
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int status; /* rf_ds_optimal, rf_ds_dist_spared, whatever. */
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/* stuff that will be in version 2 of the label */
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int sectPerSU; /* Sectors per Stripe Unit */
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int SUsPerPU; /* Stripe Units per Parity Units */
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int SUsPerRU; /* Stripe Units per Reconstruction Units */
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int parityConfig; /* '0' == RAID0, '1' == RAID1, etc. */
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int maxOutstanding; /* maxOutstanding disk requests */
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int blockSize; /* size of component block.
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(disklabel->d_secsize) */
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int numBlocks; /* number of blocks on this component. May
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be smaller than the partition size. */
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int partitionSize; /* number of blocks on this *partition*.
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Must exactly match the partition size
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from the disklabel. */
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int future_use[33]; /* Future expansion */
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int autoconfigure; /* automatically configure this RAID set.
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0 == no, 1 == yes */
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int root_partition; /* Use this set as /
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0 == no, 1 == yes*/
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int last_unit; /* last unit number (e.g. 0 for /dev/raid0)
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of this component. Used for autoconfigure
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only. */
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int config_order; /* 0 .. n. The order in which the component
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should be auto-configured. E.g. 0 is will
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done first, (and would become raid0).
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This may be in conflict with last_unit!!?! */
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/* Not currently used. */
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int future_use2[44]; /* More future expansion */
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} RF_ComponentLabel_t;
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typedef struct RF_SingleComponent_s {
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int row;
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int column;
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char component_name[50]; /* name of the component */
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} RF_SingleComponent_t;
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#ifdef _KERNEL
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struct raidcinfo {
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struct vnode *ci_vp; /* component device's vnode */
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dev_t ci_dev; /* component device's dev_t */
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RF_ComponentLabel_t ci_label; /* components RAIDframe label */
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#if 0
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size_t ci_size; /* size */
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char *ci_path; /* path to component */
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size_t ci_pathlen; /* length of component path */
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#endif
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};
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/* XXX probably belongs in a different .h file. */
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typedef struct RF_AutoConfig_s {
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char devname[56]; /* the name of this component */
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int flag; /* a general-purpose flag */
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dev_t dev; /* the device for this component */
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struct vnode *vp; /* Mr. Vnode Pointer */
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RF_ComponentLabel_t *clabel; /* the label */
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struct RF_AutoConfig_s *next; /* the next autoconfig structure
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in this set. */
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} RF_AutoConfig_t;
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typedef struct RF_ConfigSet_s {
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struct RF_AutoConfig_s *ac; /* all of the autoconfig structures for
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this config set. */
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int rootable; /* Set to 1 if this set can be root */
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struct RF_ConfigSet_s *next;
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} RF_ConfigSet_t;
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#endif /* _KERNEL */
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#endif /* _RF__RF_NETBSDSTUFF_H_ */
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