don't print native_fallocate() error if ENOSYS

log_err(ENOSYS) on native_fallocate() failure which was newly added
by 2c3e17be('filesetup: add native fallocate') should be silenced
or somehow be printed only once instead of being a per file message.

This happens on a platform like FreeBSD where posix_fallocate(3)
exists, but native_fallocate() is ENOSYS.

This commit just silences it if errno is set to ENOSYS on return.
"native" is the default mode, thus not printing ENOSYS won't be any
confusing unless fallocate=native is explicitly specified, and
native_fallocate() has dprint() for ENOSYS case anyway.

--
 # uname
 FreeBSD
 # ./fio --name=xxx --ioengine=sync --rw=read --bs=4k --size=10m --nrfiles=20
 xxx: (g=0): rw=read, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=sync, iodepth=1
 fio-2.99-23-gdad0
 Starting 1 process
 xxx: Laying out IO files (20 files / total 10MiB)
 fio: native_fallocate call failed: Function not implemented
 fio: native_fallocate call failed: Function not implemented
 fio: native_fallocate call failed: Function not implemented
 fio: native_fallocate call failed: Function not implemented
 fio: native_fallocate call failed: Function not implemented
 fio: native_fallocate call failed: Function not implemented
 fio: native_fallocate call failed: Function not implemented
 fio: native_fallocate call failed: Function not implemented
 fio: native_fallocate call failed: Function not implemented
 fio: native_fallocate call failed: Function not implemented
 ...

Signed-off-by: Tomohiro Kusumi <tkusumi@tuxera.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/filesetup.c b/filesetup.c
index 362997c15856dbb83b2ab39a0a123e217dd65dd7..839aefc33752e28c7a8e7a628593f9f8f758066f 100644 (file)
--- a/filesetup.c
+++ b/filesetup.c
@@ -67,7 +67,7 @@ static void fallocate_file(struct thread_data *td, struct fio_file *f)
        switch (td->o.fallocate_mode) {
        case FIO_FALLOCATE_NATIVE:
                r = native_fallocate(td, f);
-               if (r != 0)
+               if (r != 0 && errno != ENOSYS)
                        log_err("fio: native_fallocate call failed: %s\n",
                                        strerror(errno));
                break;