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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 /xlators/mount/fuse
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 'xlators/mount/fuse')
-rw-r--r--xlators/mount/fuse/src/fuse-bridge.c47
1 files changed, 46 insertions, 1 deletions
diff --git a/xlators/mount/fuse/src/fuse-bridge.c b/xlators/mount/fuse/src/fuse-bridge.c
index 43c98a2..59472b9 100644
--- a/xlators/mount/fuse/src/fuse-bridge.c
+++ b/xlators/mount/fuse/src/fuse-bridge.c
@@ -2653,6 +2653,51 @@ fuse_readdirp (xlator_t *this, fuse_in_header_t *finh, void *msg)
fuse_resolve_and_resume (state, fuse_readdirp_resume);
}
+static int
+fuse_fallocate_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+ struct iatt *postbuf, dict_t *xdata)
+{
+ return fuse_err_cbk(frame, cookie, this, op_ret, op_errno, xdata);
+}
+
+static void
+fuse_fallocate_resume(fuse_state_t *state)
+{
+ gf_log("glusterfs-fuse", GF_LOG_TRACE,
+ "%"PRIu64": FALLOCATE (%p, flags=%d, size=%zu, offset=%"PRId64")",
+ state->finh->unique, state->fd, state->flags, state->size,
+ state->off);
+
+ /* we only support KEEP_SIZE */
+ FUSE_FOP(state, fuse_fallocate_cbk, GF_FOP_FALLOCATE, fallocate, state->fd,
+ (state->flags & FALLOC_FL_KEEP_SIZE), state->off, state->size,
+ state->xdata);
+}
+
+static void
+fuse_fallocate(xlator_t *this, fuse_in_header_t *finh, void *msg)
+{
+ struct fuse_fallocate_in *ffi = msg;
+ fuse_state_t *state = NULL;
+
+ GET_STATE(this, finh, state);
+ state->off = ffi->offset;
+ state->size = ffi->length;
+ state->flags = ffi->mode;
+ state->fd = FH_TO_FD(ffi->fh);
+
+ /* discard TBD as separate FOP */
+ if (state->flags & FALLOC_FL_PUNCH_HOLE) {
+ send_fuse_err(this, finh, EOPNOTSUPP);
+ free_fuse_state(state);
+ return;
+ }
+
+ fuse_resolve_fd_init(state, &state->resolve, state->fd);
+ fuse_resolve_and_resume(state, fuse_fallocate_resume);
+}
+
static void
fuse_releasedir (xlator_t *this, fuse_in_header_t *finh, void *msg)
@@ -4861,7 +4906,7 @@ static fuse_handler_t *fuse_std_ops[FUSE_OP_HIGH] = {
/* [FUSE_POLL] */
/* [FUSE_NOTIFY_REPLY] */
/* [FUSE_BATCH_FORGET] */
- /* [FUSE_FALLOCATE] */
+ [FUSE_FALLOCATE] = fuse_fallocate,
[FUSE_READDIRPLUS] = fuse_readdirp,
};