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-rw-r--r--xlators/storage/posix/src/posix.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c
index 4abea83..6b12d39 100644
--- a/xlators/storage/posix/src/posix.c
+++ b/xlators/storage/posix/src/posix.c
@@ -5663,6 +5663,40 @@ init (xlator_t *this)
_private->base_path = gf_strdup (dir_data->data);
_private->base_path_length = strlen (_private->base_path);
+ /*
+ * _XOPEN_PATH_MAX is the longest file path len we MUST
+ * support according to POSIX standard. When prepended
+ * by the brick base path it may exceed backed filesystem
+ * capacity (which MAY be bigger than _XOPEN_PATH_MAX). If
+ * this is the case, chdir() to the brick base path and
+ * use relative paths when they are too long. See also
+ * MAKE_REAL_PATH in posix-handle.h
+ */
+ _private->path_max = pathconf(_private->base_path, _PC_PATH_MAX);
+ if (_private->path_max != -1 &&
+ _XOPEN_PATH_MAX + _private->base_path_length > _private->path_max) {
+ ret = chdir(_private->base_path);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "chdir() to \"%s\" failed",
+ _private->base_path);
+ goto out;
+ }
+#ifdef __NetBSD__
+ /*
+ * At least on NetBSD, the chdir() above uncovers a
+ * race condition which cause file lookup to fail
+ * with ENODATA for a few seconds. The volume quickly
+ * reaches a sane state, but regression tests are fast
+ * enough to choke on it. The reason is obscure (as
+ * often with race conditions), but sleeping here for
+ * a second seems to workaround the problem.
+ */
+ sleep(1);
+#endif
+ }
+
+
LOCK_INIT (&_private->lock);
ret = dict_get_str (this->options, "hostname", &_private->hostname);