0ece818a7b
This is necessary for two reasons:
1) In order to avoid collisions with the use of a BIOs flags set by a consumer
or a provider
2) Because GV_BIO_DONE was used to mark a BIO as done, not enough flags was
available, so the consumer flags of a BIO had to be misused in order to
support enough flags. The new queue makes it possible to recycle the
GV_BIO_DONE flag into GV_BIO_GROW.
As a consequence, gvinum will now work with any other GEOM class under it or
on top of it.
- Use bio_pflags for storing internal flags on downgoing BIOs, as the requests
appear to come from a consumer of a gvinum volume. Use bio_cflags only for
cloned BIOs.
- Move gv_post_bio to be used internally for maintenance requests.
- Remove some cases where flags where set without need.
PR: kern/133604
182 lines
7.2 KiB
C
182 lines
7.2 KiB
C
/*-
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* Copyright (c) 2004, 2007 Lukas Ertl
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _GEOM_VINUM_H_
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#define _GEOM_VINUM_H_
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/* geom_vinum_create.c */
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void gv_concat(struct g_geom *gp, struct gctl_req *);
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void gv_mirror(struct g_geom *gp, struct gctl_req *);
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void gv_stripe(struct g_geom *gp, struct gctl_req *);
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void gv_raid5(struct g_geom *gp, struct gctl_req *);
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int gv_create_drive(struct gv_softc *, struct gv_drive *);
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int gv_create_volume(struct gv_softc *, struct gv_volume *);
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int gv_create_plex(struct gv_softc *, struct gv_plex *);
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int gv_create_sd(struct gv_softc *, struct gv_sd *);
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/* geom_vinum_drive.c */
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void gv_save_config(struct gv_softc *);
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int gv_read_header(struct g_consumer *, struct gv_hdr *);
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int gv_write_header(struct g_consumer *, struct gv_hdr *);
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/* geom_vinum_init.c */
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void gv_start_obj(struct g_geom *, struct gctl_req *);
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int gv_start_plex(struct gv_plex *);
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int gv_start_vol(struct gv_volume *);
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/* geom_vinum_list.c */
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void gv_ld(struct g_geom *, struct gctl_req *, struct sbuf *);
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void gv_lp(struct g_geom *, struct gctl_req *, struct sbuf *);
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void gv_ls(struct g_geom *, struct gctl_req *, struct sbuf *);
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void gv_lv(struct g_geom *, struct gctl_req *, struct sbuf *);
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void gv_list(struct g_geom *, struct gctl_req *);
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/* geom_vinum_move.c */
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void gv_move(struct g_geom *, struct gctl_req *);
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int gv_move_sd(struct gv_softc *, struct gv_sd *, struct gv_drive *, int);
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/* geom_vinum_rename.c */
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void gv_rename(struct g_geom *, struct gctl_req *);
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int gv_rename_drive(struct gv_softc *, struct gv_drive *, char *, int);
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int gv_rename_plex(struct gv_softc *, struct gv_plex *, char *, int);
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int gv_rename_sd(struct gv_softc *, struct gv_sd *, char *, int);
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int gv_rename_vol(struct gv_softc *, struct gv_volume *, char *, int);
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/* geom_vinum_rm.c */
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void gv_remove(struct g_geom *, struct gctl_req *);
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int gv_resetconfig(struct gv_softc *);
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void gv_rm_sd(struct gv_softc *sc, struct gv_sd *s);
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void gv_rm_drive(struct gv_softc *, struct gv_drive *, int);
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void gv_rm_plex(struct gv_softc *, struct gv_plex *);
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void gv_rm_vol(struct gv_softc *, struct gv_volume *);
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/* geom_vinum_state.c */
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int gv_sdstatemap(struct gv_plex *);
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void gv_setstate(struct g_geom *, struct gctl_req *);
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int gv_set_drive_state(struct gv_drive *, int, int);
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int gv_set_sd_state(struct gv_sd *, int, int);
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int gv_set_vol_state(struct gv_volume *, int, int);
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int gv_set_plex_state(struct gv_plex *, int, int);
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void gv_update_sd_state(struct gv_sd *);
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void gv_update_plex_state(struct gv_plex *);
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void gv_update_vol_state(struct gv_volume *);
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/* geom_vinum_subr.c */
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void gv_adjust_freespace(struct gv_sd *, off_t);
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void gv_free_sd(struct gv_sd *);
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struct gv_drive *gv_find_drive(struct gv_softc *, char *);
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struct gv_drive *gv_find_drive_device(struct gv_softc *, char *);
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struct gv_plex *gv_find_plex(struct gv_softc *, char *);
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struct gv_sd *gv_find_sd(struct gv_softc *, char *);
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struct gv_volume *gv_find_vol(struct gv_softc *, char *);
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void gv_format_config(struct gv_softc *, struct sbuf *, int,
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char *);
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int gv_is_striped(struct gv_plex *);
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int gv_consumer_is_open(struct g_consumer *);
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int gv_provider_is_open(struct g_provider *);
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int gv_object_type(struct gv_softc *, char *);
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void gv_parse_config(struct gv_softc *, char *,
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struct gv_drive *);
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int gv_sd_to_drive(struct gv_sd *, struct gv_drive *);
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int gv_sd_to_plex(struct gv_sd *, struct gv_plex *);
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int gv_sdcount(struct gv_plex *, int);
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void gv_update_plex_config(struct gv_plex *);
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void gv_update_vol_size(struct gv_volume *, off_t);
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off_t gv_vol_size(struct gv_volume *);
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off_t gv_plex_size(struct gv_plex *);
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int gv_plexdown(struct gv_volume *);
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int gv_attach_plex(struct gv_plex *, struct gv_volume *,
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int);
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int gv_attach_sd(struct gv_sd *, struct gv_plex *, off_t,
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int);
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int gv_detach_plex(struct gv_plex *, int);
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int gv_detach_sd(struct gv_sd *, int);
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/* geom_vinum.c */
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void gv_worker(void *);
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void gv_post_event(struct gv_softc *, int, void *, void *, intmax_t,
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intmax_t);
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struct gv_event *gv_get_event(struct gv_softc *);
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void gv_remove_event(struct gv_softc *, struct gv_event *);
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void gv_drive_tasted(struct gv_softc *, struct g_provider *);
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void gv_drive_lost(struct gv_softc *, struct gv_drive *);
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void gv_setup_objects(struct gv_softc *);
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void gv_start(struct bio *);
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int gv_access(struct g_provider *, int, int, int);
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void gv_cleanup(struct gv_softc *);
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/* geom_vinum_volume.c */
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void gv_done(struct bio *);
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void gv_volume_start(struct gv_softc *, struct bio *);
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void gv_volume_flush(struct gv_volume *);
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void gv_bio_done(struct gv_softc *, struct bio *);
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/* geom_vinum_plex.c */
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void gv_plex_start(struct gv_plex *, struct bio *);
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void gv_plex_raid5_done(struct gv_plex *, struct bio *);
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void gv_plex_normal_done(struct gv_plex *, struct bio *);
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int gv_grow_request(struct gv_plex *, off_t, off_t, int, caddr_t);
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void gv_grow_complete(struct gv_plex *, struct bio *);
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void gv_init_request(struct gv_sd *, off_t, caddr_t, off_t);
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void gv_init_complete(struct gv_plex *, struct bio *);
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void gv_parity_request(struct gv_plex *, int, off_t);
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void gv_parity_complete(struct gv_plex *, struct bio *);
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void gv_rebuild_complete(struct gv_plex *, struct bio *);
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int gv_sync_request(struct gv_plex *, struct gv_plex *, off_t, off_t, int,
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caddr_t);
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int gv_sync_complete(struct gv_plex *, struct bio *);
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extern u_int g_vinum_debug;
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#define G_VINUM_DEBUG(lvl, ...) do { \
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if (g_vinum_debug >= (lvl)) { \
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printf("GEOM_VINUM"); \
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if (g_vinum_debug > 0) \
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printf("[%u]", lvl); \
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printf(": "); \
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printf(__VA_ARGS__); \
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printf("\n"); \
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} \
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} while (0)
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#define G_VINUM_LOGREQ(lvl, bp, ...) do { \
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if (g_vinum_debug >= (lvl)) { \
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printf("GEOM_VINUM"); \
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if (g_vinum_debug > 0) \
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printf("[%u]", lvl); \
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printf(": "); \
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printf(__VA_ARGS__); \
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printf(" "); \
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g_print_bio(bp); \
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printf("\n"); \
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} \
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} while (0)
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#endif /* !_GEOM_VINUM_H_ */
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