Home | History | Annotate | Line # | Download | only in lfs_cleanerd
cleaner.h revision 1.1 
      1  1.1  perseant #ifndef CLEANER_H_
      2  1.1  perseant #define CLEANER_H_
      3  1.1  perseant 
      4  1.1  perseant /*
      5  1.1  perseant  * An abbreviated version of the SEGUSE data structure.
      6  1.1  perseant  */
      7  1.1  perseant struct clfs_seguse {
      8  1.1  perseant 	u_int32_t nbytes;
      9  1.1  perseant 	u_int32_t nsums;
     10  1.1  perseant 	u_int32_t flags;
     11  1.1  perseant 	u_int64_t lastmod;
     12  1.1  perseant 	u_int64_t priority;
     13  1.1  perseant };
     14  1.1  perseant 
     15  1.1  perseant /*
     16  1.1  perseant  * The cleaner's view of the superblock data structure.
     17  1.1  perseant  */
     18  1.1  perseant struct clfs {
     19  1.1  perseant 	struct dlfs lfs_dlfs;	   /* Leverage LFS lfs_* defines here */
     20  1.1  perseant 
     21  1.1  perseant 	/* Ifile */
     22  1.1  perseant 	int clfs_ifilefd;	   /* Ifile file descriptor */
     23  1.1  perseant 	struct uvnode *lfs_ivnode; /* Ifile vnode */
     24  1.1  perseant 	fhandle_t clfs_ifilefh;	   /* Ifile file handle */
     25  1.1  perseant 
     26  1.1  perseant 	/* Device */
     27  1.1  perseant 	int clfs_devfd;		   /* Device file descriptor */
     28  1.1  perseant 	struct uvnode *clfs_devvp; /* Device vnode */
     29  1.1  perseant 	char *clfs_dev;		   /* Name of device */
     30  1.1  perseant 
     31  1.1  perseant 	/* Cache of segment status */
     32  1.1  perseant 	struct clfs_seguse  *clfs_segtab;  /* Abbreviated seguse table */
     33  1.1  perseant 	struct clfs_seguse **clfs_segtabp; /* pointers to same */
     34  1.1  perseant 
     35  1.1  perseant 	/* Progress status */
     36  1.1  perseant 	int clfs_nactive;	   /* How many segments' blocks we have */
     37  1.1  perseant 	int clfs_onhold;	   /* If cleaning this fs is on hold */
     38  1.1  perseant };
     39  1.1  perseant 
     40  1.1  perseant /*
     41  1.1  perseant  * Fraction of the could-be-clean segments required to be clean.
     42  1.1  perseant  */
     43  1.1  perseant #define BUSY_LIM 0.5
     44  1.1  perseant #define IDLE_LIM 0.9
     45  1.1  perseant 
     46  1.1  perseant __BEGIN_DECLS
     47  1.1  perseant 
     48  1.1  perseant /* lfs_cleanerd.c */
     49  1.1  perseant void pwarn(const char *, ...);
     50  1.1  perseant void calc_cb(struct clfs *, int, struct clfs_seguse *);
     51  1.1  perseant int clean_fs(struct clfs *, CLEANERINFO *);
     52  1.1  perseant void dlog(char *, ...);
     53  1.1  perseant void handle_error(struct clfs **, int);
     54  1.1  perseant int init_fs(struct clfs *, char *);
     55  1.1  perseant int invalidate_segment(struct clfs *, int);
     56  1.1  perseant void lfs_ientry(IFILE **, struct clfs *, ino_t, struct ubuf **);
     57  1.1  perseant int load_segment(struct clfs *, int, BLOCK_INFO **, int *);
     58  1.1  perseant int needs_cleaning(struct clfs *, CLEANERINFO *);
     59  1.1  perseant int32_t parse_pseg(struct clfs *, daddr_t, BLOCK_INFO **, int *);
     60  1.1  perseant int reinit_fs(struct clfs *);
     61  1.1  perseant void reload_ifile(struct clfs *);
     62  1.1  perseant void toss_old_blocks(struct clfs *, BLOCK_INFO **, int *);
     63  1.1  perseant 
     64  1.1  perseant /* cleansrv.c */
     65  1.1  perseant void check_control_socket(void);
     66  1.1  perseant void try_to_become_master(int, char **);
     67  1.1  perseant 
     68  1.1  perseant /* coalesce.c */
     69  1.1  perseant int log2int(int);
     70  1.1  perseant int clean_all_inodes(struct clfs *);
     71  1.1  perseant int fork_coalesce(struct clfs *);
     72  1.1  perseant 
     73  1.1  perseant __END_DECLS
     74  1.1  perseant 
     75  1.1  perseant #endif /* CLEANER_H_ */
     76