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| author | le <le@FreeBSD.org> | 2004-09-18 13:44:43 +0000 |
|---|---|---|
| committer | le <le@FreeBSD.org> | 2004-09-18 13:44:43 +0000 |
| commit | 18ba8315a7f99725d24144b4ba8f020a09eb6c80 (patch) | |
| tree | b26a5245ec9f7555a82415414ac98257151bf50c /sys/geom/vinum/geom_vinum_var.h | |
| parent | 1991acc23e3343dcdae467ab20ed1b0e729ea778 (diff) | |
| download | FreeBSD-src-18ba8315a7f99725d24144b4ba8f020a09eb6c80.zip FreeBSD-src-18ba8315a7f99725d24144b4ba8f020a09eb6c80.tar.gz | |
Re-vamp how I/O is handled in volumes and plexes.
Analogous to the drive level, give each volume and plex a worker thread
that picks up and processes incoming and completed BIOs.
This should fix the data corruption issues that have come up a few
weeks ago and improve performance, especially of RAID5 plexes.
The volume level needs a little work, though.
Diffstat (limited to 'sys/geom/vinum/geom_vinum_var.h')
| -rw-r--r-- | sys/geom/vinum/geom_vinum_var.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/sys/geom/vinum/geom_vinum_var.h b/sys/geom/vinum/geom_vinum_var.h index 38b540f..99c1c37 100644 --- a/sys/geom/vinum/geom_vinum_var.h +++ b/sys/geom/vinum/geom_vinum_var.h @@ -111,6 +111,8 @@ #define GV_BIO_DONE 0x01 #define GV_BIO_MALLOC 0x02 #define GV_BIO_ONHOLD 0x04 +#define GV_BIO_SYNCREQ 0x08 +#define GV_BIO_SUCCEED 0x10 /* * hostname is 256 bytes long, but we don't need to shlep multiple copies in @@ -269,8 +271,9 @@ struct gv_plex { off_t synced; /* Count of synced bytes. */ - struct mtx worklist_mtx; /* Mutex for RAID5 worklist. */ - TAILQ_HEAD(,gv_raid5_packet) worklist; /* List of RAID5 work packets. */ + struct mtx bqueue_mtx; /* Lock for the BIO queue. */ + TAILQ_HEAD(,gv_bioq) bqueue; /* BIO queue. */ + TAILQ_HEAD(,gv_raid5_packet) packets; /* RAID5 sub-requests. */ LIST_HEAD(,gv_sd) subdisks; /* List of attached subdisks. */ LIST_ENTRY(gv_plex) in_volume; /* Plex list of associated volume. */ @@ -292,6 +295,14 @@ struct gv_volume { #define GV_VOL_DOWN 0 #define GV_VOL_UP 1 + int flags; +#define GV_VOL_THREAD_ACTIVE 0x01 /* Volume has an active thread. */ +#define GV_VOL_THREAD_DIE 0x02 /* Signal the thread to die. */ +#define GV_VOL_THREAD_DEAD 0x04 /* The thread has died. */ + + struct mtx bqueue_mtx; /* Lock for the BIO queue. */ + TAILQ_HEAD(,gv_bioq) bqueue; /* BIO queue. */ + LIST_HEAD(,gv_plex) plexes; /* List of attached plexes. */ LIST_ENTRY(gv_volume) volume; /* Entry in vinum config. */ |
