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[Cluster-devel] cluster/gfs2/libgfs2 fs_ops.c libgfs2.h struct ...



CVSROOT:	/cvs/cluster
Module name:	cluster
Changes by:	rpeterso sourceware org	2007-02-12 18:55:29

Modified files:
	gfs2/libgfs2   : fs_ops.c libgfs2.h structures.c 

Log message:
	Resolves: bz 222308: mkfs and journal addition for GFS2 should produce
	contiguous journals.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/gfs2/libgfs2/fs_ops.c.diff?cvsroot=cluster&r1=1.4&r2=1.5
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/gfs2/libgfs2/libgfs2.h.diff?cvsroot=cluster&r1=1.9&r2=1.10
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/gfs2/libgfs2/structures.c.diff?cvsroot=cluster&r1=1.6&r2=1.7

--- cluster/gfs2/libgfs2/fs_ops.c	2006/06/12 20:38:27	1.4
+++ cluster/gfs2/libgfs2/fs_ops.c	2007/02/12 18:55:29	1.5
@@ -209,7 +209,7 @@
 	ip->i_di.di_height = 1;
 }
 
-static unsigned int calc_tree_height(struct gfs2_inode *ip, uint64_t size)
+unsigned int calc_tree_height(struct gfs2_inode *ip, uint64_t size)
 {
 	struct gfs2_sbd *sdp = ip->i_sbd;
 	uint64_t *arr;
@@ -233,7 +233,7 @@
 	return height;
 }
 
-static void build_height(struct gfs2_inode *ip, int height)
+void build_height(struct gfs2_inode *ip, int height)
 {
 	struct gfs2_sbd *sdp = ip->i_sbd;
 	struct gfs2_buffer_head *bh;
@@ -335,7 +335,7 @@
 }
 
 void block_map(struct gfs2_inode *ip, uint64_t lblock, int *new,
-			   uint64_t *dblock, uint32_t *extlen)
+			   uint64_t *dblock, uint32_t *extlen, int prealloc)
 {
 	struct gfs2_sbd *sdp = ip->i_sbd;
 	struct gfs2_buffer_head *bh;
@@ -395,7 +395,8 @@
 			bh = bread(sdp, *dblock);
 	}
 
-	lookup_block(ip, bh, end_of_metadata, mp, create, new, dblock);
+	if (!prealloc)
+		lookup_block(ip, bh, end_of_metadata, mp, create, new, dblock);
 
 	if (extlen && *dblock) {
 		*extlen = 1;
@@ -480,7 +481,7 @@
 			amount = sdp->bsize - o;
 
 		if (!extlen)
-			block_map(ip, lblock, &not_new, &dblock, &extlen);
+			block_map(ip, lblock, &not_new, &dblock, &extlen, FALSE);
 
 		if (dblock) {
 			bh = bread(sdp, dblock);
@@ -552,7 +553,7 @@
 
 		if (!extlen) {
 			new = TRUE;
-			block_map(ip, lblock, &new, &dblock, &extlen);
+			block_map(ip, lblock, &new, &dblock, &extlen, FALSE);
 		}
 
 		if (new) {
@@ -583,7 +584,8 @@
 	return copied;
 }
 
-struct gfs2_buffer_head *get_file_buf(struct gfs2_inode *ip, uint64_t lbn)
+struct gfs2_buffer_head *get_file_buf(struct gfs2_inode *ip, uint64_t lbn,
+									  int prealloc)
 {
 	struct gfs2_sbd *sdp = ip->i_sbd;
 	uint64_t dbn;
@@ -592,11 +594,11 @@
 	if (inode_is_stuffed(ip))
 		unstuff_dinode(ip);
 
-	block_map(ip, lbn, &new, &dbn, NULL);
+	block_map(ip, lbn, &new, &dbn, NULL, prealloc);
 	if (!dbn)
 		die("get_file_buf\n");
 
-	if (new &&
+	if (!prealloc && new &&
 	    ip->i_di.di_size < (lbn + 1) << sdp->bsize_shift)
 		ip->i_di.di_size = (lbn + 1) << sdp->bsize_shift;
 
--- cluster/gfs2/libgfs2/libgfs2.h	2007/01/23 19:23:06	1.9
+++ cluster/gfs2/libgfs2/libgfs2.h	2007/02/12 18:55:29	1.10
@@ -391,7 +391,8 @@
 			   uint64_t offset, unsigned int size);
 int gfs2_writei(struct gfs2_inode *ip, void *buf,
 				uint64_t offset, unsigned int size);
-struct gfs2_buffer_head *get_file_buf(struct gfs2_inode *ip, uint64_t lbn);
+struct gfs2_buffer_head *get_file_buf(struct gfs2_inode *ip, uint64_t lbn,
+									  int prealloc);
 struct gfs2_buffer_head *init_dinode(struct gfs2_sbd *sdp,
 									 struct gfs2_inum *inum,
 									 unsigned int mode, uint32_t flags,
@@ -408,7 +409,7 @@
 int gfs2_dirent_del(struct gfs2_inode *dip, struct gfs2_buffer_head *bh,
 					const char *filename, int filename_len);
 void block_map(struct gfs2_inode *ip, uint64_t lblock, int *new,
-			   uint64_t *dblock, uint32_t *extlen);
+			   uint64_t *dblock, uint32_t *extlen, int prealloc);
 void gfs2_get_leaf_nr(struct gfs2_inode *dip, uint32_t index,
 					  uint64_t *leaf_out);
 int gfs2_freedi(struct gfs2_sbd *sdp, uint64_t block);
@@ -418,6 +419,10 @@
 					  struct gfs2_dirent **dent);
 int gfs2_dirent_next(struct gfs2_inode *dip, struct gfs2_buffer_head *bh,
 					 struct gfs2_dirent **dent);
+void build_height(struct gfs2_inode *ip, int height);
+unsigned int calc_tree_height(struct gfs2_inode *ip, uint64_t size);
+void write_journal(struct gfs2_sbd *sdp, struct gfs2_inode *ip, unsigned int j,
+				   unsigned int blocks);
 
 /**
  * device_size - figure out a device's size
--- cluster/gfs2/libgfs2/structures.c	2006/11/22 18:39:38	1.6
+++ cluster/gfs2/libgfs2/structures.c	2007/02/12 18:55:29	1.7
@@ -83,20 +83,19 @@
 	}
 }
 
-void build_journal(struct gfs2_inode *jindex, unsigned int j)
+void write_journal(struct gfs2_sbd *sdp, struct gfs2_inode *ip, unsigned int j,
+				   unsigned int blocks)
 {
-	struct gfs2_sbd *sdp = jindex->i_sbd;
-	char name[256];
-	struct gfs2_inode *ip;
 	struct gfs2_log_header lh;
-	unsigned int blocks = sdp->jsize << 20 >> sdp->bsize_shift;
 	unsigned int x;
 	uint64_t seq = RANDOM(blocks);
 	uint32_t hash;
+	unsigned int height;
 
-	sprintf(name, "journal%u", j);
-	ip = createi(jindex, name, S_IFREG | 0600,
-		     GFS2_DIF_SYSTEM);
+	/* Build the height up so our journal blocks will be contiguous and */
+	/* not broken up by indirect block pages.                           */
+	height = calc_tree_height(ip, (blocks + 1) * sdp->bsize);
+	build_height(ip, height);
 
 	memset(&lh, 0, sizeof(struct gfs2_log_header));
 	lh.lh_header.mh_magic = GFS2_MAGIC;
@@ -105,9 +104,15 @@
 	lh.lh_flags = GFS2_LOG_HEAD_UNMOUNT;
 
 	for (x = 0; x < blocks; x++) {
-		struct gfs2_buffer_head *bh = get_file_buf(ip, ip->i_di.di_size >> sdp->bsize_shift);
+		struct gfs2_buffer_head *bh = get_file_buf(ip, x, TRUE);
+		if (!bh)
+			die("write_journal\n");
+		brelse(bh, updated);
+	}
+	for (x = 0; x < blocks; x++) {
+		struct gfs2_buffer_head *bh = get_file_buf(ip, x, FALSE);
 		if (!bh)
-			die("build_journals\n");
+			die("write_journal\n");
 
 		lh.lh_sequence = seq;
 		lh.lh_blkno = x;
@@ -125,8 +130,6 @@
 		printf("\nJournal %u:\n", j);
 		gfs2_dinode_print(&ip->i_di);
 	}
-
-	inode_put(ip, updated);
 }
 
 void
@@ -138,8 +141,15 @@
 	jindex = createi(sdp->master_dir, "jindex", S_IFDIR | 0700,
 			 GFS2_DIF_SYSTEM);
 
-	for (j = 0; j < sdp->md.journals; j++)
-		build_journal(jindex, j);
+	for (j = 0; j < sdp->md.journals; j++) {
+		char name[256];
+		struct gfs2_inode *ip;
+
+		sprintf(name, "journal%u", j);
+		ip = createi(jindex, name, S_IFREG | 0600, GFS2_DIF_SYSTEM);
+		write_journal(sdp, ip, j, sdp->jsize << 20 >> sdp->bsize_shift);
+		inode_put(ip, updated);
+	}
 
 	if (sdp->debug) {
 		printf("\nJindex:\n");
@@ -209,7 +219,7 @@
 		     GFS2_DIF_SYSTEM);
 
 	for (x = 0; x < blocks; x++) {
-		struct gfs2_buffer_head *bh = get_file_buf(ip, ip->i_di.di_size >> sdp->bsize_shift);
+		struct gfs2_buffer_head *bh = get_file_buf(ip, ip->i_di.di_size >> sdp->bsize_shift, FALSE);
 		if (!bh)
 			die("build_quota_change\n");
 


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