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authorBrian Foster <bfoster@redhat.com>2013-05-08 08:54:11 -0400
committerAnand Avati <avati@redhat.com>2013-06-13 14:37:21 -0700
commitd1ccc4e400728d90f2ef7904661f53deb7199123 (patch)
tree1c491d1932795d85941861fa683431ee22608668 /api
parent328ea4b16a276b0e65ca719f60b82ce851dda848 (diff)
gluster: add fallocate fop support
Implement support for the fallocate file operation. fallocate allocates blocks for a particular inode such that future writes to the associated region of the file are guaranteed not to fail with ENOSPC. This patch adds fallocate support to the following areas: - libglusterfs - mount/fuse - io-stats - performance/md-cache,open-behind - quota - cluster/afr,dht,stripe - rpc/xdr - protocol/client,server - io-threads - marker - storage/posix - libgfapi BUG: 949242 Change-Id: Ice8e61351f9d6115c5df68768bc844abbf0ce8bd Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-on: http://review.gluster.org/4969 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'api')
-rwxr-xr-xapi/examples/gfapi.py14
-rw-r--r--api/src/glfs-fops.c34
-rw-r--r--api/src/glfs.h2
3 files changed, 50 insertions, 0 deletions
diff --git a/api/examples/gfapi.py b/api/examples/gfapi.py
index 7d7a5bab12d..8dfe2791d0c 100755
--- a/api/examples/gfapi.py
+++ b/api/examples/gfapi.py
@@ -98,6 +98,9 @@ class File(object):
def write (self, data, flags=0):
return api.glfs_write(self.fd,data,len(data),flags)
+ def fallocate (self, mode, offset, len):
+ return api.glfs_fallocate(self.fd, mode, offset, len)
+
class Dir(object):
def __init__ (self, fd):
@@ -349,6 +352,16 @@ if __name__ == "__main__":
return False, "wrong listxattr value %s" % repr(xattrs)
return True, "listxattr worked"
+ def test_fallocate (vol, path, data):
+ mypath = path + ".io"
+ fd = vol.creat(mypath,os.O_WRONLY|os.O_EXCL,0644)
+ if not fd:
+ return False, "creat error"
+ rc = fd.fallocate(0, 0, 1024)
+ if rc != 0:
+ return False, "fallocate error"
+ return True, "fallocate worked"
+
test_list = (
test_create_write,
test_open_read,
@@ -363,6 +376,7 @@ if __name__ == "__main__":
test_setxattr,
test_getxattr,
test_listxattr,
+ test_fallocate,
)
ok_to_fail = (
diff --git a/api/src/glfs-fops.c b/api/src/glfs-fops.c
index 66e7d69f14d..4bc0bb1b6d3 100644
--- a/api/src/glfs-fops.c
+++ b/api/src/glfs-fops.c
@@ -2632,6 +2632,40 @@ out:
int
+glfs_fallocate (struct glfs_fd *glfd, int keep_size, off_t offset, size_t len)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_fallocate (subvol, fd, keep_size, offset, len);
+out:
+ if (fd)
+ fd_unref(fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+int
glfs_chdir (struct glfs *fs, const char *path)
{
int ret = -1;
diff --git a/api/src/glfs.h b/api/src/glfs.h
index f472ca4ea1e..3888a103eb9 100644
--- a/api/src/glfs.h
+++ b/api/src/glfs.h
@@ -448,6 +448,8 @@ int glfs_lremovexattr (glfs_t *fs, const char *path, const char *name);
int glfs_fremovexattr (glfs_fd_t *fd, const char *name);
+int glfs_fallocate(glfs_fd_t *fd, int keep_size, off_t offset, size_t len);
+
char *glfs_getcwd (glfs_t *fs, char *buf, size_t size);
int glfs_chdir (glfs_t *fs, const char *path);