[Ocfs2-devel] [PATCH 1/6] Move resize function out of tunefs.c, take 1

Tao Ma tao.ma at oracle.com
Fri Nov 16 00:46:32 PST 2007


We will add online resize in tunefs.ocfs2, and it will be complicated.
so add a new file resize.c in it and move all resize function out of
tunefs.c.

Signed-off-by: Tao Ma <tao.ma at oracle.com>

---

 tunefs.ocfs2/Makefile |    2 
 tunefs.ocfs2/resize.c |  320 +++++++++++++++++++++++++++++++++++++++++++++++++
 tunefs.ocfs2/tunefs.c |  295 ---------------------------------------------
 tunefs.ocfs2/tunefs.h |    6 +
 4 files changed, 328 insertions(+), 295 deletions(-)
 create mode 100644 tunefs.ocfs2/resize.c

755feb64b82a2c84291e713ccde2be2a5ea31f18
diff --git a/tunefs.ocfs2/Makefile b/tunefs.ocfs2/Makefile
index e6b4427..be68fc8 100644
--- a/tunefs.ocfs2/Makefile
+++ b/tunefs.ocfs2/Makefile
@@ -31,7 +31,7 @@ DEFINES = -DOCFS2_FLAT_INCLUDES -DVERSIO
 
 MANS = tunefs.ocfs2.8
 
-CFILES = tunefs.c query.c remove_slot.c sparse_file.c features.c
+CFILES = tunefs.c query.c remove_slot.c sparse_file.c features.c resize.c
 HFILES = tunefs.h
 
 OBJS = $(subst .c,.o,$(CFILES))
diff --git a/tunefs.ocfs2/resize.c b/tunefs.ocfs2/resize.c
new file mode 100644
index 0000000..be5ea6b
--- /dev/null
+++ b/tunefs.ocfs2/resize.c
@@ -0,0 +1,320 @@
+/*
+ * resize.c
+ *
+ * tunefs utility for online and offline resize.
+ *
+ * Copyright (C) 2007 Oracle.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ *
+ */
+
+#include <tunefs.h>
+
+extern ocfs2_tune_opts opts;
+
+void get_vol_size(ocfs2_filesys *fs)
+{
+	errcode_t ret = 0;
+	uint64_t num_blocks;
+
+	ret = ocfs2_get_device_size(opts.device, fs->fs_blocksize,
+				    &num_blocks);
+	if (ret) {
+		com_err(opts.progname, ret, "while getting size of device %s",
+			opts.device);
+		exit(1);
+	}
+
+	if (!opts.num_blocks)
+		opts.num_blocks = num_blocks;
+
+	if (opts.num_blocks > num_blocks) {
+		com_err(opts.progname, 0, "The containing partition (or device) "
+			"is only %"PRIu64" blocks", num_blocks);
+		exit(1);
+	}
+
+	return ;
+}
+
+int validate_vol_size(ocfs2_filesys *fs)
+{
+	uint64_t num_blocks;
+
+	if (opts.num_blocks == fs->fs_blocks) {
+		com_err(opts.progname, 0, "The filesystem is already "
+			"%"PRIu64" blocks", fs->fs_blocks);
+		return -1;
+	}
+
+	if (opts.num_blocks < fs->fs_blocks) {
+		com_err(opts.progname, 0, "Cannot shrink volume size from "
+		       "%"PRIu64" blocks to %"PRIu64" blocks",
+		       fs->fs_blocks, opts.num_blocks);
+		return -1;
+	}
+
+	num_blocks = ocfs2_clusters_to_blocks(fs, 1);
+	if (num_blocks > (opts.num_blocks - fs->fs_blocks)) {
+		com_err(opts.progname, 0, "Cannot grow volume size less than "
+		       "%d blocks", num_blocks);
+		return -1;
+	}
+
+	if (opts.num_blocks > UINT32_MAX) {
+		com_err(opts.progname, 0, "As JBD can only store block numbers "
+			"in 32 bits, %s cannot be grown to more than %"PRIu64" "
+			"blocks.", opts.device, UINT32_MAX);
+		return -1;
+	}
+
+	return 0;
+}
+
+errcode_t update_volume_size(ocfs2_filesys *fs, int *changed)
+{
+	errcode_t ret = 0;
+	struct ocfs2_dinode *di;
+	uint64_t bm_blkno = 0;
+	uint64_t gd_blkno = 0;
+	uint64_t lgd_blkno = 0;
+	char *in_buf = NULL;
+	char *gd_buf = NULL;
+	char *lgd_buf = NULL;
+	struct ocfs2_chain_list *cl;
+	struct ocfs2_chain_rec *cr;
+	struct ocfs2_group_desc *gd;
+	uint32_t cluster_chunk;
+	uint32_t num_new_clusters, save_new_clusters;
+	uint32_t first_new_cluster;
+	uint16_t chain;
+	uint32_t used_bits;
+	uint32_t total_bits;
+	uint32_t num_bits;
+	int flush_lgd = 0;
+	char *zero_buf = NULL;
+
+	ret = ocfs2_malloc_block(fs->fs_io, &in_buf);
+	if (ret) {
+		com_err(opts.progname, ret, "while allocating a block during "
+			"volume resize");
+		goto bail;
+	}
+
+	ret = ocfs2_malloc_block(fs->fs_io, &gd_buf);
+	if (ret) {
+		com_err(opts.progname, ret, "while allocating a block during "
+			"volume resize");
+		goto bail;
+	}
+
+	ret = ocfs2_malloc_block(fs->fs_io, &lgd_buf);
+	if (ret) {
+		com_err(opts.progname, ret, "while allocating a block during "
+			"volume resize");
+		goto bail;
+	}
+
+	ret = ocfs2_malloc_blocks(fs->fs_io, ocfs2_clusters_to_blocks(fs, 1),
+				  &zero_buf);
+	if (ret) {
+		com_err(opts.progname, ret, "while allocating a cluster during "
+			"volume resize");
+		goto bail;
+	}
+
+	memset(zero_buf, 0, fs->fs_clustersize);
+
+	/* read global bitmap */
+	ret = ocfs2_lookup_system_inode(fs, GLOBAL_BITMAP_SYSTEM_INODE, 0,
+					&bm_blkno);
+	if (ret) {
+		com_err(opts.progname, ret, "while looking up global bitmap "
+			"inode during volume resize");
+		goto bail;
+	}
+
+	ret = ocfs2_read_inode(fs, bm_blkno, in_buf);
+	if (ret) {
+		com_err(opts.progname, ret, "while reading inode at block "
+			"%"PRIu64" during volume resize", bm_blkno);
+		goto bail;
+	}
+
+	di = (struct ocfs2_dinode *)in_buf;
+	cl = &(di->id2.i_chain);
+
+	total_bits = di->id1.bitmap1.i_total;
+	used_bits = di->id1.bitmap1.i_used;
+
+	first_new_cluster = di->i_clusters;
+	save_new_clusters = num_new_clusters =
+		ocfs2_blocks_to_clusters(fs, opts.num_blocks) - di->i_clusters;
+
+	/* Find the blknum of the last cluster group */
+	lgd_blkno = ocfs2_which_cluster_group(fs, cl->cl_cpg, first_new_cluster - 1);
+
+	ret = ocfs2_read_group_desc(fs, lgd_blkno, lgd_buf);
+	if (ret) {
+		com_err(opts.progname, ret, "while reading group descriptor "
+			"at block %"PRIu64" during volume resize", lgd_blkno);
+		goto bail;
+	}
+
+	gd = (struct ocfs2_group_desc *)lgd_buf;
+
+	/* If only one cluster group then see if we need to adjust up cl_cpg */
+	if (cl->cl_next_free_rec == 1) {
+		if (cl->cl_cpg < 8 * gd->bg_size)
+			cl->cl_cpg = 8 * gd->bg_size;
+	}
+
+	chain = gd->bg_chain;
+
+	/* If possible round off the last group to cpg */
+	cluster_chunk = MIN(num_new_clusters,
+			    (cl->cl_cpg - (gd->bg_bits/cl->cl_bpc)));
+	if (cluster_chunk) {
+		num_new_clusters -= cluster_chunk;
+		first_new_cluster += cluster_chunk;
+
+		num_bits = cluster_chunk * cl->cl_bpc;
+
+		gd->bg_bits += num_bits;
+		gd->bg_free_bits_count += num_bits;
+
+		cr = &(cl->cl_recs[chain]);
+		cr->c_total += num_bits;
+		cr->c_free += num_bits;
+
+		total_bits += num_bits;
+
+		fs->fs_clusters += cluster_chunk;
+		fs->fs_blocks += ocfs2_clusters_to_blocks(fs, cluster_chunk);
+
+		/* This cluster group block is written after the new */
+		/* cluster groups are written to disk */
+		flush_lgd = 1;
+	}
+
+	/* Init the new groups and write to disk */
+	/* Add these groups one by one starting from the first chain after */
+	/* the one containing the last group */
+
+	gd = (struct ocfs2_group_desc *)gd_buf;
+
+	while(num_new_clusters) {
+		gd_blkno = ocfs2_which_cluster_group(fs, cl->cl_cpg,
+						     first_new_cluster);
+		cluster_chunk = MIN(num_new_clusters, cl->cl_cpg);
+		num_new_clusters -= cluster_chunk;
+		first_new_cluster += cluster_chunk;
+
+		if (++chain >= cl->cl_count)
+			chain = 0;
+
+		ocfs2_init_group_desc(fs, gd, gd_blkno,
+				      fs->fs_super->i_fs_generation, di->i_blkno,
+				      (cluster_chunk *cl->cl_bpc), chain);
+
+		/* Add group to chain */
+		cr = &(cl->cl_recs[chain]);
+		if (chain >= cl->cl_next_free_rec) {
+			cl->cl_next_free_rec++;
+			cr->c_free = 0;
+			cr->c_total = 0;
+			cr->c_blkno = 0;
+		}
+
+		gd->bg_next_group = cr->c_blkno;
+		cr->c_blkno = gd_blkno;
+		cr->c_free += gd->bg_free_bits_count;
+		cr->c_total += gd->bg_bits;
+
+		used_bits += (gd->bg_bits - gd->bg_free_bits_count);
+		total_bits += gd->bg_bits;
+
+		fs->fs_clusters += cluster_chunk;
+		fs->fs_blocks += ocfs2_clusters_to_blocks(fs, cluster_chunk);
+
+		/* Initialize the first cluster in the group */
+		ret = io_write_block(fs->fs_io, gd_blkno,
+				     ocfs2_clusters_to_blocks(fs, 1), zero_buf);
+		if (ret) {
+			com_err(opts.progname, ret, "while initializing the "
+				"cluster starting at block %"PRIu64" during "
+				"volume resize", gd_blkno);
+			goto bail;
+		}
+
+		/* write a new group descriptor */
+		ret = ocfs2_write_group_desc(fs, gd_blkno, gd_buf);
+		if (ret) {
+			com_err(opts.progname, ret, "while writing group "
+				"descriptor at block %"PRIu64" during "
+				"volume resize", gd_blkno);
+			goto bail;
+		}
+	}
+
+	di->id1.bitmap1.i_total = total_bits;
+	di->id1.bitmap1.i_used = used_bits;
+
+	di->i_clusters += save_new_clusters;
+	di->i_size = (uint64_t) di->i_clusters * fs->fs_clustersize;
+
+	fs->fs_super->i_clusters = di->i_clusters;
+
+	block_signals(SIG_BLOCK);
+	/* Flush that last group descriptor we updated before the new ones */
+	if (flush_lgd) {
+		ret = ocfs2_write_group_desc(fs, lgd_blkno, lgd_buf);
+		if (ret) {
+			block_signals(SIG_UNBLOCK);
+			com_err(opts.progname, ret, "while flushing group "
+				"descriptor at block %"PRIu64" during "
+				"volume resize", lgd_blkno);
+			goto bail;
+		}
+	}
+
+	/* write the global bitmap inode */
+	ret = ocfs2_write_inode(fs, bm_blkno, in_buf);
+	if (ret) {
+		block_signals(SIG_UNBLOCK);
+		com_err(opts.progname, ret, "while writing global bitmap "
+			"inode at block %"PRIu64" during volume resize",
+			bm_blkno);
+		goto bail;
+	}
+
+	block_signals(SIG_UNBLOCK);
+
+	*changed = 1;
+
+bail:
+	if (zero_buf)
+		ocfs2_free(&zero_buf);
+	if (in_buf)
+		ocfs2_free(&in_buf);
+	if (gd_buf)
+		ocfs2_free(&gd_buf);
+	if (lgd_buf)
+		ocfs2_free(&lgd_buf);
+
+	return ret;
+}
diff --git a/tunefs.ocfs2/tunefs.c b/tunefs.ocfs2/tunefs.c
index fbcee4a..207431c 100644
--- a/tunefs.ocfs2/tunefs.c
+++ b/tunefs.ocfs2/tunefs.c
@@ -66,7 +66,7 @@ static void handle_signal(int sig)
 }
 
 /* Call this with SIG_BLOCK to block and SIG_UNBLOCK to unblock */
-static void block_signals(int how)
+void block_signals(int how)
 {
      sigset_t sigs;
 
@@ -408,31 +408,6 @@ static void get_options(int argc, char *
 	return ;
 }
 
-static void get_vol_size(ocfs2_filesys *fs)
-{
-	errcode_t ret = 0;
-	uint64_t num_blocks;
-
-	ret = ocfs2_get_device_size(opts.device, fs->fs_blocksize,
-				    &num_blocks);
-	if (ret) {
-		com_err(opts.progname, ret, "while getting size of device %s",
-			opts.device);
-		exit(1);
-	}
-
-	if (!opts.num_blocks)
-		opts.num_blocks = num_blocks;
-
-	if (opts.num_blocks > num_blocks) {
-		com_err(opts.progname, 0, "The containing partition (or device) "
-			"is only %"PRIu64" blocks", num_blocks);
-		exit(1);
-	}
-
-	return ;
-}
-
 static int validate_mount_change(ocfs2_filesys *fs)
 {
 	if (opts.mount == MOUNT_LOCAL) {
@@ -446,40 +421,6 @@ static int validate_mount_change(ocfs2_f
 	return -1;
 }
 
-static int validate_vol_size(ocfs2_filesys *fs)
-{
-	uint64_t num_blocks;
-
-	if (opts.num_blocks == fs->fs_blocks) {
-		com_err(opts.progname, 0, "The filesystem is already "
-			"%"PRIu64" blocks", fs->fs_blocks);
-		return -1;
-	}
-
-	if (opts.num_blocks < fs->fs_blocks) {
-		com_err(opts.progname, 0, "Cannot shrink volume size from "
-		       "%"PRIu64" blocks to %"PRIu64" blocks",
-		       fs->fs_blocks, opts.num_blocks);
-		return -1;
-	}
-
-	num_blocks = ocfs2_clusters_to_blocks(fs, 1);
-	if (num_blocks > (opts.num_blocks - fs->fs_blocks)) {
-		com_err(opts.progname, 0, "Cannot grow volume size less than "
-		       "%d blocks", num_blocks);
-		return -1;
-	}
-
-	if (opts.num_blocks > UINT32_MAX) {
-		com_err(opts.progname, 0, "As JBD can only store block numbers "
-			"in 32 bits, %s cannot be grown to more than %"PRIu64" "
-			"blocks.", opts.device, UINT32_MAX);
-		return -1;
-	}
-
-	return 0;
-}
-
 static errcode_t add_slots(ocfs2_filesys *fs)
 {
 	errcode_t ret = 0;
@@ -994,240 +935,6 @@ bail:
 	return ret;
 }
 
-static errcode_t update_volume_size(ocfs2_filesys *fs, int *changed)
-{
-	errcode_t ret = 0;
-	struct ocfs2_dinode *di;
-	uint64_t bm_blkno = 0;
-	uint64_t gd_blkno = 0;
-	uint64_t lgd_blkno = 0;
-	char *in_buf = NULL;
-	char *gd_buf = NULL;
-	char *lgd_buf = NULL;
-	struct ocfs2_chain_list *cl;
-	struct ocfs2_chain_rec *cr;
-	struct ocfs2_group_desc *gd;
-	uint32_t cluster_chunk;
-	uint32_t num_new_clusters, save_new_clusters;
-	uint32_t first_new_cluster;
-	uint16_t chain;
-	uint32_t used_bits;
-	uint32_t total_bits;
-	uint32_t num_bits;
-	int flush_lgd = 0;
-	char *zero_buf = NULL;
-
-	ret = ocfs2_malloc_block(fs->fs_io, &in_buf);
-	if (ret) {
-		com_err(opts.progname, ret, "while allocating a block during "
-			"volume resize");
-		goto bail;
-	}
-
-	ret = ocfs2_malloc_block(fs->fs_io, &gd_buf);
-	if (ret) {
-		com_err(opts.progname, ret, "while allocating a block during "
-			"volume resize");
-		goto bail;
-	}
-
-	ret = ocfs2_malloc_block(fs->fs_io, &lgd_buf);
-	if (ret) {
-		com_err(opts.progname, ret, "while allocating a block during "
-			"volume resize");
-		goto bail;
-	}
-
-	ret = ocfs2_malloc_blocks(fs->fs_io, ocfs2_clusters_to_blocks(fs, 1),
-				  &zero_buf);
-	if (ret) {
-		com_err(opts.progname, ret, "while allocating a cluster during "
-			"volume resize");
-		goto bail;
-	}
-
-	memset(zero_buf, 0, fs->fs_clustersize);
-
-	/* read global bitmap */
-	ret = ocfs2_lookup_system_inode(fs, GLOBAL_BITMAP_SYSTEM_INODE, 0,
-					&bm_blkno);
-	if (ret) {
-		com_err(opts.progname, ret, "while looking up global bitmap "
-			"inode during volume resize");
-		goto bail;
-	}
-
-	ret = ocfs2_read_inode(fs, bm_blkno, in_buf);
-	if (ret) {
-		com_err(opts.progname, ret, "while reading inode at block "
-			"%"PRIu64" during volume resize", bm_blkno);
-		goto bail;
-	}
-
-	di = (struct ocfs2_dinode *)in_buf;
-	cl = &(di->id2.i_chain);
-
-	total_bits = di->id1.bitmap1.i_total;
-	used_bits = di->id1.bitmap1.i_used;
-
-	first_new_cluster = di->i_clusters;
-	save_new_clusters = num_new_clusters =
-	       	ocfs2_blocks_to_clusters(fs, opts.num_blocks) - di->i_clusters;
-
-	/* Find the blknum of the last cluster group */
-	lgd_blkno = ocfs2_which_cluster_group(fs, cl->cl_cpg, first_new_cluster - 1);
-
-	ret = ocfs2_read_group_desc(fs, lgd_blkno, lgd_buf);
-	if (ret) {
-		com_err(opts.progname, ret, "while reading group descriptor "
-			"at block %"PRIu64" during volume resize", lgd_blkno);
-		goto bail;
-	}
-
-	gd = (struct ocfs2_group_desc *)lgd_buf;
-
-	/* If only one cluster group then see if we need to adjust up cl_cpg */
-	if (cl->cl_next_free_rec == 1) {
-		if (cl->cl_cpg < 8 * gd->bg_size)
-			cl->cl_cpg = 8 * gd->bg_size;
-	}
-
-	chain = gd->bg_chain;
-
-	/* If possible round off the last group to cpg */
-	cluster_chunk = MIN(num_new_clusters,
-			    (cl->cl_cpg - (gd->bg_bits/cl->cl_bpc)));
-	if (cluster_chunk) {
-		num_new_clusters -= cluster_chunk;
-		first_new_cluster += cluster_chunk;
-
-		num_bits = cluster_chunk * cl->cl_bpc;
-
-		gd->bg_bits += num_bits;
-		gd->bg_free_bits_count += num_bits;
-
-		cr = &(cl->cl_recs[chain]);
-		cr->c_total += num_bits;
-		cr->c_free += num_bits;
-
-		total_bits += num_bits;
-
-		fs->fs_clusters += cluster_chunk;
-		fs->fs_blocks += ocfs2_clusters_to_blocks(fs, cluster_chunk);
-
-		/* This cluster group block is written after the new */
-		/* cluster groups are written to disk */
-		flush_lgd = 1;
-	}
-
-	/* Init the new groups and write to disk */
-	/* Add these groups one by one starting from the first chain after */
-	/* the one containing the last group */
-
-	gd = (struct ocfs2_group_desc *)gd_buf;
-
-	while(num_new_clusters) {
-		gd_blkno = ocfs2_which_cluster_group(fs, cl->cl_cpg,
-						     first_new_cluster);
-		cluster_chunk = MIN(num_new_clusters, cl->cl_cpg);
-		num_new_clusters -= cluster_chunk;
-		first_new_cluster += cluster_chunk;
-
-		if (++chain >= cl->cl_count)
-			chain = 0;
-
-		ocfs2_init_group_desc(fs, gd, gd_blkno,
-				      fs->fs_super->i_fs_generation, di->i_blkno,
-				      (cluster_chunk *cl->cl_bpc), chain);
-
-		/* Add group to chain */
-		cr = &(cl->cl_recs[chain]);
-		if (chain >= cl->cl_next_free_rec) {
-			cl->cl_next_free_rec++;
-			cr->c_free = 0;
-			cr->c_total = 0;
-			cr->c_blkno = 0;
-		}
-
-		gd->bg_next_group = cr->c_blkno;
-		cr->c_blkno = gd_blkno;
-		cr->c_free += gd->bg_free_bits_count;
-		cr->c_total += gd->bg_bits;
-
-		used_bits += (gd->bg_bits - gd->bg_free_bits_count);
-		total_bits += gd->bg_bits;
-
-		fs->fs_clusters += cluster_chunk;
-		fs->fs_blocks += ocfs2_clusters_to_blocks(fs, cluster_chunk);
-
-		/* Initialize the first cluster in the group */
-		ret = io_write_block(fs->fs_io, gd_blkno,
-				     ocfs2_clusters_to_blocks(fs, 1), zero_buf);
-		if (ret) {
-			com_err(opts.progname, ret, "while initializing the "
-				"cluster starting at block %"PRIu64" during "
-				"volume resize", gd_blkno);
-			goto bail;
-		}
-
-		/* write a new group descriptor */
-		ret = ocfs2_write_group_desc(fs, gd_blkno, gd_buf);
-		if (ret) {
-			com_err(opts.progname, ret, "while writing group "
-				"descriptor at block %"PRIu64" during "
-				"volume resize", gd_blkno);
-			goto bail;
-		}
-	}
-
-	di->id1.bitmap1.i_total = total_bits;
-	di->id1.bitmap1.i_used = used_bits;
-
-	di->i_clusters += save_new_clusters;
-	di->i_size = (uint64_t) di->i_clusters * fs->fs_clustersize;
-
-	fs->fs_super->i_clusters = di->i_clusters;
-
-	block_signals(SIG_BLOCK);
-	/* Flush that last group descriptor we updated before the new ones */
-	if (flush_lgd) {
-		ret = ocfs2_write_group_desc(fs, lgd_blkno, lgd_buf);
-		if (ret) {
-			block_signals(SIG_UNBLOCK);
-			com_err(opts.progname, ret, "while flushing group "
-				"descriptor at block %"PRIu64" during "
-				"volume resize", lgd_blkno);
-			goto bail;
-		}
-	}
-
-	/* write the global bitmap inode */
-	ret = ocfs2_write_inode(fs, bm_blkno, in_buf);
-	if (ret) {
-		block_signals(SIG_UNBLOCK);
-		com_err(opts.progname, ret, "while writing global bitmap "
-			"inode at block %"PRIu64" during volume resize",
-			bm_blkno);
- 		goto bail;
-	}
-
-	block_signals(SIG_UNBLOCK);
-
-	*changed = 1;
-
-bail:
-	if (zero_buf)
-		ocfs2_free(&zero_buf);
-	if (in_buf)
-		ocfs2_free(&in_buf);
-	if (gd_buf)
-		ocfs2_free(&gd_buf);
-	if (lgd_buf)
-		ocfs2_free(&lgd_buf);
-
-	return ret;
-}
-
 static errcode_t refresh_backup_super(ocfs2_filesys *fs)
 {
 	errcode_t ret;
diff --git a/tunefs.ocfs2/tunefs.h b/tunefs.ocfs2/tunefs.h
index 566d746..3863331 100644
--- a/tunefs.ocfs2/tunefs.h
+++ b/tunefs.ocfs2/tunefs.h
@@ -98,6 +98,8 @@ typedef struct _ocfs2_tune_opts {
 	time_t tune_time;
 } ocfs2_tune_opts;
 
+void block_signals(int how);
+
 void print_query(char *queryfmt);
 
 errcode_t remove_slots(ocfs2_filesys *fs);
@@ -113,4 +115,8 @@ void free_clear_ctxt(void);
 
 errcode_t feature_check(ocfs2_filesys *fs);
 errcode_t update_feature(ocfs2_filesys *fs);
+
+void get_vol_size(ocfs2_filesys *fs);
+errcode_t update_volume_size(ocfs2_filesys *fs, int *changed);
+int validate_vol_size(ocfs2_filesys *fs);
 #endif /* _TUNEFS_H */
-- 
1.3.3



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