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autofs-5.0.7 - dont probe rdma mounts
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From: Ian Kent <raven@themaw.net>
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Since the change to pass text nfs mount options drectly to the kernel all autofs
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mount requests now probe server availability. This was because of long delays
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mounting from servers that aren't responding.
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This caused mounts requesting the rdma protocol to fail if udp or tcp was also
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not available from the server.
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Since, AFAICT the rmda protocol can't be used with RPC fromn userspace, the only
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way to work around it is to not probe servers when rdma is requested.
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---
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CHANGELOG | 1 +
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modules/mount_nfs.c | 13 ++++++++++++-
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2 files changed, 13 insertions(+), 1 deletion(-)
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diff --git a/CHANGELOG b/CHANGELOG
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index 50e83d7..f9bc987 100644
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--- a/CHANGELOG
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+++ b/CHANGELOG
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@@ -44,6 +44,7 @@
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- document allowed map sources in auto.master.
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- add enable sloppy mount option to configure.
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- fix interface address null check.
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+- dont probe rdma mounts.
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25/07/2012 autofs-5.0.7
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=======================
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diff --git a/modules/mount_nfs.c b/modules/mount_nfs.c
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index e61320b..5424d74 100644
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--- a/modules/mount_nfs.c
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+++ b/modules/mount_nfs.c
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@@ -71,6 +71,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name, int
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int nosymlink = 0;
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int port = -1;
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int ro = 0; /* Set if mount bind should be read-only */
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+ int rdma = 0;
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if (ap->flags & MOUNT_FLAG_REMOUNT)
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return 0;
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@@ -124,6 +125,11 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name, int
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end--;
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o_len = end - cp + 1;
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+
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+ if (strncmp("proto=rdma", cp, o_len) == 0 ||
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+ strncmp("rdma", cp, o_len) == 0)
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+ rdma = 1;
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+
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if (strncmp("nosymlink", cp, o_len) == 0) {
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warn(ap->logopt, MODPREFIX
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"the \"nosymlink\" option is depricated "
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@@ -170,7 +176,12 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name, int
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info(ap->logopt, MODPREFIX "no hosts available");
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return 1;
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}
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- prune_host_list(ap->logopt, &hosts, vers, port);
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+ /*
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+ * We can't probe protocol rdma so leave it to mount.nfs(8)
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+ * and and suffer the delay if a server isn't available.
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+ */
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+ if (!rdma)
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+ prune_host_list(ap->logopt, &hosts, vers, port);
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if (!hosts) {
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info(ap->logopt, MODPREFIX "no hosts available");
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