* Definitions for using the Device functions in Bacula
* Tape and File storage access
*
+ * Kern Sibbald, MM
+ *
* Version $Id$
*
*/
/*
- Copyright (C) 2000-2003 Kern Sibbald and John Walker
+ Copyright (C) 2000-2004 Kern Sibbald and John Walker
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
#ifndef __DEV_H
#define __DEV_H 1
+#undef DCR /* used by Bacula */
+
/* #define NEW_LOCK 1 */
#define new_lock_device(dev) _new_lock_device(__FILE__, __LINE__, (dev))
#define give_back_device_lock(d, p) _give_back_device_lock(__FILE__, __LINE__, (d), (p))
/* Arguments to open_dev() */
-#define READ_WRITE 0
-#define READ_ONLY 1
-#define OPEN_READ_WRITE 0
-#define OPEN_READ_ONLY 1
-#define OPEN_WRITE_ONLY 2
+enum {
+ OPEN_READ_WRITE = 0,
+ OPEN_READ_ONLY,
+ OPEN_WRITE_ONLY
+};
/* Generic status bits returned from status_dev() */
#define BMT_TAPE (1<<0) /* is tape device */
#define CAP_OFFLINEUNMOUNT (1<<13) /* Offline before unmount */
#define CAP_STREAM (1<<14) /* Stream device */
#define CAP_BSFATEOM (1<<15) /* Backspace file at EOM */
+#define CAP_FASTFSF (1<<16) /* Fast forward space file */
+#define CAP_TWOEOF (1<<17) /* Write two eofs for EOM */
+#define CAP_CLOSEONPOLL (1<<18) /* Close device on polling */
+#define CAP_POSITIONBLOCKS (1<<19) /* Use block positioning */
/* Test state */
#define dev_state(dev, st_state) ((dev)->state & (st_state))
#define ST_SHORT (1<<13) /* Short block read */
/* dev_blocked states (mutually exclusive) */
-#define BST_NOT_BLOCKED 0 /* not blocked */
-#define BST_UNMOUNTED 1 /* User unmounted device */
-#define BST_WAITING_FOR_SYSOP 2 /* Waiting for operator to mount tape */
-#define BST_DOING_ACQUIRE 3 /* Opening/validating/moving tape */
-#define BST_WRITING_LABEL 4 /* Labeling a tape */
-#define BST_UNMOUNTED_WAITING_FOR_SYSOP 5 /* Closed by user during mount request */
-#define BST_MOUNT 6 /* Mount request */
+enum {
+ BST_NOT_BLOCKED = 0, /* not blocked */
+ BST_UNMOUNTED, /* User unmounted device */
+ BST_WAITING_FOR_SYSOP, /* Waiting for operator to mount tape */
+ BST_DOING_ACQUIRE, /* Opening/validating/moving tape */
+ BST_WRITING_LABEL, /* Labeling a tape */
+ BST_UNMOUNTED_WAITING_FOR_SYSOP, /* Closed by user during mount request */
+ BST_MOUNT /* Mount request */
+};
/* Volume Catalog Information structure definition */
struct VOLUME_CAT_INFO {
uint64_t VolCatRBytes; /* Number of bytes read */
uint32_t VolCatRecycles; /* Number of recycles this volume */
int32_t Slot; /* Slot in changer */
- int32_t Drive; /* Changer drive */
bool InChanger; /* Set if vol in current magazine */
uint32_t VolCatMaxJobs; /* Maximum Jobs to write to volume */
uint32_t VolCatMaxFiles; /* Maximum files to write to volume */
uint64_t VolCatMaxBytes; /* Max bytes to write to volume */
uint64_t VolCatCapacityBytes; /* capacity estimate */
+ uint64_t VolReadTime; /* time spent reading */
+ uint64_t VolWriteTime; /* time spent writing this Volume */
char VolCatStatus[20]; /* Volume status */
char VolCatName[MAX_NAME_LENGTH]; /* Desired volume to mount */
};
typedef struct s_steal_lock {
- pthread_t no_wait_id; /* id of no wait thread */
- int dev_blocked; /* state */
+ pthread_t no_wait_id; /* id of no wait thread */
+ int dev_blocked; /* state */
+ int dev_prev_blocked; /* previous blocked state */
} bsteal_lock_t;
struct DEVRES; /* Device resource defined in stored_conf.h */
-/* Device structure definition */
+/*
+ * Device structure definition. There is one of these for
+ * each physical device. Everything here is "global" to
+ * that device and effects all jobs using the device.
+ */
struct DEVICE {
public:
DEVICE *next; /* pointer to next open device */
DEVICE *prev; /* pointer to prev open device */
JCR *attached_jcrs; /* attached JCR list */
+ dlist *attached_dcrs; /* attached DCR list */
pthread_mutex_t mutex; /* access control */
+ pthread_mutex_t spool_mutex; /* mutex for updating spool_size */
pthread_cond_t wait; /* thread wait variable */
pthread_cond_t wait_next_vol; /* wait for tape to be mounted */
pthread_t no_wait_id; /* this thread must not wait */
int dev_blocked; /* set if we must wait (i.e. change tape) */
+ int dev_prev_blocked; /* previous blocked state */
int num_waiting; /* number of threads waiting */
int num_writers; /* number of writing threads */
+
+ /* New access control in process of being implemented */
+ brwlock_t lock; /* New mutual exclusion lock */
+
int use_count; /* usage count on this device */
int fd; /* file descriptor */
int capabilities; /* capabilities mask */
int state; /* state mask */
int dev_errno; /* Our own errno */
int mode; /* read/write modes */
- char *dev_name; /* device name */
+ uint32_t drive_index; /* Autochanger drive index */
+ POOLMEM *dev_name; /* device name */
char *errmsg; /* nicely edited error message */
uint32_t block_num; /* current block number base 0 */
uint32_t file; /* current file number base 0 */
uint64_t file_addr; /* Current file read/write address */
+ uint64_t file_size; /* Current file size */
uint32_t EndBlock; /* last block written */
uint32_t EndFile; /* last file written */
uint32_t min_block_size; /* min block size */
uint64_t max_volume_size; /* max bytes to put on one volume */
uint64_t max_file_size; /* max file size to put in one file on volume */
uint64_t volume_capacity; /* advisory capacity */
+ uint64_t max_spool_size; /* maximum spool file size */
+ uint64_t spool_size; /* curren spool size */
uint32_t max_rewind_wait; /* max secs to allow for rewind */
uint32_t max_open_wait; /* max secs to allow for open */
uint32_t max_open_vols; /* max simultaneous open volumes */
+ utime_t vol_poll_interval; /* interval between polling Vol mount */
DEVRES *device; /* pointer to Device Resource */
- btimer_id tid; /* timer id */
+ btimer_t *tid; /* timer id */
VOLUME_CAT_INFO VolCatInfo; /* Volume Catalog Information */
VOLUME_LABEL VolHdr; /* Actual volume label */
+ /* Device wait times ***FIXME*** look at durations */
+ char BadVolName[MAX_NAME_LENGTH]; /* Last wrong Volume mounted */
+ bool poll; /* set to poll Volume */
+ int min_wait;
+ int max_wait;
+ int max_num_wait;
+ int wait_sec;
+ int rem_wait_sec;
+ int num_wait;
+};
+
+/*
+ * Device Context (or Control) Record.
+ * There is one of these records for each Job that is using
+ * the device. Items in this record are "local" to the Job and
+ * do not affect other Jobs.
+ */
+class DCR {
+public:
+ dlink dev_link; /* link to attach to dev */
+ JCR *jcr; /* pointer to JCR */
+ DEVICE *dev; /* pointer to device */
+ DEV_BLOCK *block; /* pointer to block */
+ DEV_RECORD *rec; /* pointer to record */
+ int spool_fd; /* fd if spooling */
+ bool spool_data; /* set to spool data */
+ bool spooling; /* set when actually spooling */
+ bool dev_locked; /* set if dev already locked */
+ bool NewVol; /* set if new Volume mounted */
+ bool WroteVol; /* set if Volume written */
+ bool NewFile; /* set when EOF written */
+ uint32_t VolFirstIndex; /* First file index this Volume */
+ uint32_t VolLastIndex; /* Last file index this Volume */
+ uint32_t FileIndex; /* Current File Index */
+ uint32_t EndFile; /* End file written */
+ uint32_t StartFile; /* Start write file */
+ uint32_t StartBlock; /* Start write block */
+ uint32_t EndBlock; /* Ending block written */
+ int64_t spool_size; /* Current spool size */
+ int64_t max_spool_size; /* Max job spool size */
+ char VolumeName[MAX_NAME_LENGTH]; /* Volume name */
+ char pool_name[MAX_NAME_LENGTH]; /* pool name */
+ char pool_type[MAX_NAME_LENGTH]; /* pool type */
+ char media_type[MAX_NAME_LENGTH]; /* media type */
+ char dev_name[MAX_NAME_LENGTH]; /* dev name */
+ VOLUME_CAT_INFO VolCatInfo; /* Catalog info for desired volume */
};
projects / bacula / bacula / blobdiff