[libvirt] [PATCH] virstoragefile: identify GPFS as cluster FS

[Diego Michelotto]

GPFS is 'IBM General Parallel File System', also called
'IBM Spectrum Scale', stalls when a process issues a lot
of fsyncs in a short timeframe.

It is better if the VM I/O is not synchronous.
It is racommended to use writeback caching policy.

In order to permit that it is added VIR_FILE_SHFS_GPFS to
the list of shared file systems in virStorageFileIsClusterFS
function.

Signed-off-by: Diego Michelotto <diego.michelotto at cnaf.infn.it>
---
 src/util/virstoragefile.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index b2e308d81d..0fe2819dc6 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -1349,7 +1349,8 @@ int virStorageFileIsClusterFS(const char *path)
     return virFileIsSharedFSType(path,
                                  VIR_FILE_SHFS_GFS2 |
                                  VIR_FILE_SHFS_OCFS |
-                                 VIR_FILE_SHFS_CEPH);
+                                 VIR_FILE_SHFS_CEPH |
+                                 VIR_FILE_SHFS_GPFS);
 }
 
 #ifdef LVS
-- 
2.20.1