Patchwork [3/8] xfstests: add fallocate support to fsstress

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Submitter Dmitri Monakho
Date Oct. 19, 2011, 10:29 a.m.
Message ID <1319020189-13584-4-git-send-email-dmonakhov@openvz.org>
Download mbox | patch
Permalink /patch/120586/
State Not Applicable
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Comments

Dmitri Monakho - Oct. 19, 2011, 10:29 a.m.
Add tests for fallocate(2) syscall
- fallocate: reserve the disk space
- punch: de-allocates the disk space
Since FALLOC_FL_PUNCH_HOLE is relatively new it's value defined
explicitly if not yet defined. Later we may clear that define.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
---
 ltp/fsstress.c |  123 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 122 insertions(+), 1 deletions(-)

Patch

diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index 385d5a0..4aba34f 100644
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -24,7 +24,13 @@ 
 #ifdef HAVE_ATTR_ATTRIBUTES_H
 #include <attr/attributes.h>
 #endif
-
+#ifdef FALLOCATE
+#include <linux/falloc.h>
+#ifndef FALLOC_FL_PUNCH_HOLE
+/* Copy-paste from linux/falloc.h */
+#define FALLOC_FL_PUNCH_HOLE    0x02 /* de-allocates range */
+#endif
+#endif
 #ifndef HAVE_ATTR_LIST
 #define attr_list(path, buf, size, flags, cursor) (errno = -ENOSYS, -1)
 #endif
@@ -48,6 +54,7 @@  typedef enum {
 	OP_CREAT,
 	OP_DREAD,
 	OP_DWRITE,
+	OP_FALLOCATE,
 	OP_FDATASYNC,
 	OP_FREESP,
 	OP_FSYNC,
@@ -55,6 +62,7 @@  typedef enum {
 	OP_LINK,
 	OP_MKDIR,
 	OP_MKNOD,
+	OP_PUNCH,
 	OP_READ,
 	OP_READLINK,
 	OP_RENAME,
@@ -128,6 +136,7 @@  void	chown_f(int, long);
 void	creat_f(int, long);
 void	dread_f(int, long);
 void	dwrite_f(int, long);
+void	fallocate_f(int, long);
 void	fdatasync_f(int, long);
 void	freesp_f(int, long);
 void	fsync_f(int, long);
@@ -135,6 +144,7 @@  void	getdents_f(int, long);
 void	link_f(int, long);
 void	mkdir_f(int, long);
 void	mknod_f(int, long);
+void	punch_f(int, long);
 void	read_f(int, long);
 void	readlink_f(int, long);
 void	rename_f(int, long);
@@ -159,6 +169,7 @@  opdesc_t	ops[] = {
 	{ OP_CREAT, "creat", creat_f, 4, 1 },
 	{ OP_DREAD, "dread", dread_f, 4, 0 },
 	{ OP_DWRITE, "dwrite", dwrite_f, 4, 1 },
+	{ OP_FALLOCATE, "fallocate", fallocate_f, 1, 1 },
 	{ OP_FDATASYNC, "fdatasync", fdatasync_f, 1, 1 },
 	{ OP_FREESP, "freesp", freesp_f, 1, 1 },
 	{ OP_FSYNC, "fsync", fsync_f, 1, 1 },
@@ -166,6 +177,7 @@  opdesc_t	ops[] = {
 	{ OP_LINK, "link", link_f, 1, 1 },
 	{ OP_MKDIR, "mkdir", mkdir_f, 2, 1 },
 	{ OP_MKNOD, "mknod", mknod_f, 2, 1 },
+	{ OP_PUNCH, "punch", punch_f, 1, 1 },
 	{ OP_READ, "read", read_f, 1, 0 },
 	{ OP_READLINK, "readlink", readlink_f, 1, 0 },
 	{ OP_RENAME, "rename", rename_f, 2, 1 },
@@ -1981,6 +1993,61 @@  dwrite_f(int opno, long r)
 }
 
 void
+fallocate_f(int opno, long r)
+{
+#ifdef FALLOCATE
+	int		e;
+	pathname_t	f;
+	int		fd;
+	__int64_t	lr;
+	off64_t		off;
+	off64_t		len;
+	struct stat64	stb;
+	int		v;
+	int mode = 0;
+
+	init_pathname(&f);
+	if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
+		if (v)
+			printf("%d/%d: fallocate - no filename\n", procid, opno);
+		free_pathname(&f);
+		return;
+	}
+	fd = open_path(&f, O_RDWR);
+	e = fd < 0 ? errno : 0;
+	check_cwd();
+	if (fd < 0) {
+		if (v)
+			printf("%d/%d: fallocate - open %s failed %d\n",
+				procid, opno, f.path, e);
+		free_pathname(&f);
+		return;
+	}
+	if (fstat64(fd, &stb) < 0) {
+		if (v)
+			printf("%d/%d: fallocate - fstat64 %s failed %d\n",
+				procid, opno, f.path, errno);
+		free_pathname(&f);
+		close(fd);
+		return;
+	}
+	lr = ((__int64_t)random() << 32) + random();
+	off = (off64_t)(lr % MIN(stb.st_size + (1024 * 1024), MAXFSIZE));
+	off %= maxfsize;
+	len = (off64_t)(random() % (1024 * 1024));
+	mode |= FALLOC_FL_KEEP_SIZE & random();
+	e = fallocate(fd, mode, (loff_t)off, (loff_t)len) < 0 ? errno : 0;
+	if (v)
+		printf("%d/%d: fallocate(%d) %s %lld %lld %d\n",
+		       procid, opno, mode,
+		       f.path, (long long)off, (long long)len, e);
+	free_pathname(&f);
+	close(fd);
+#endif
+}
+
+
+void
 fdatasync_f(int opno, long r)
 {
 	int		e;
@@ -2251,6 +2318,60 @@  mknod_f(int opno, long r)
 }
 
 void
+punch_f(int opno, long r)
+{
+#ifdef FALLOCATE
+	int		e;
+	pathname_t	f;
+	int		fd;
+	__int64_t	lr;
+	off64_t		off;
+	off64_t		len;
+	struct stat64	stb;
+	int		v;
+	int mode = FALLOC_FL_PUNCH_HOLE;
+
+	init_pathname(&f);
+	if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
+		if (v)
+			printf("%d/%d: punch hole - no filename\n", procid, opno);
+		free_pathname(&f);
+		return;
+	}
+	fd = open_path(&f, O_RDWR);
+	e = fd < 0 ? errno : 0;
+	check_cwd();
+	if (fd < 0) {
+		if (v)
+			printf("%d/%d: punch hole - open %s failed %d\n",
+				procid, opno, f.path, e);
+		free_pathname(&f);
+		return;
+	}
+	if (fstat64(fd, &stb) < 0) {
+		if (v)
+			printf("%d/%d: punch hole - fstat64 %s failed %d\n",
+				procid, opno, f.path, errno);
+		free_pathname(&f);
+		close(fd);
+		return;
+	}
+	lr = ((__int64_t)random() << 32) + random();
+	off = (off64_t)(lr % MIN(stb.st_size + (1024 * 1024), MAXFSIZE));
+	off %= maxfsize;
+	len = (off64_t)(random() % (1024 * 1024));
+	mode |= FALLOC_FL_KEEP_SIZE & random();
+	e = fallocate(fd, mode, (loff_t)off, (loff_t)len) < 0 ? errno : 0;
+	if (v)
+		printf("%d/%d: punch hole(%d) %s %lld %lld %d\n",
+		       procid, opno, mode,
+		       f.path, (long long)off, (long long)len, e);
+	free_pathname(&f);
+	close(fd);
+#endif
+}
+
+void
 read_f(int opno, long r)
 {
 	char		*buf;