Mounting an NFS v3 volume from a server that is currently down, immediately fails with a timeout error, instead of retrying: # mount -t nfs -v -overs=3,proto=udp,bg server:/foo /mnt mount.nfs: trying text-based options 'vers=3,proto=udp,bg,addr=172.17.2.94' mount.nfs: prog 100003, trying vers=3, prot=17 mount.nfs: portmap query failed: RPC: Timed out mount.nfs: mount to NFS server 'server:/foo' failed: timed out, giving up # mount -t nfs -v -overs=3,proto=tcp,bg server:/foo /mnt mount.nfs: trying text-based options 'vers=3,proto=tcp,bg,addr=172.17.2.94' mount.nfs: prog 100003, trying vers=3, prot=6 mount.nfs: portmap query failed: RPC: Remote system error - No route to host mount.nfs: No route to host As a result, NFS mounts may not come up after a power failure when the client boots faster than the server. The attached patch for nfs-utils adds ESPIPE to the list of errors considered temporary, so that the mount will be retried: # mount -t nfs -v -overs=3,proto=udp,bg server:/foo /mnt mount.nfs: trying text-based options 'vers=3,proto=udp,bg,addr=172.17.2.94' mount.nfs: prog 100003, trying vers=3, prot=17 mount.nfs: portmap query failed: RPC: Timed out mount.nfs: backgrounding "server:/foo" mount.nfs: mount options: "vers=3,proto=udp,bg,addr=172.17.2.94" # mount -t nfs -v -overs=3,proto=tcp,bg server:/foo /mnt mount.nfs: trying text-based options 'vers=3,proto=tcp,bg,addr=172.17.2.94' mount.nfs: prog 100003, trying vers=3, prot=6 mount.nfs: portmap query failed: RPC: Remote system error - No route to host mount.nfs: backgrounding "server:/foo" mount.nfs: mount options: "vers=3,proto=tcp,bg,addr=172.17.2.94" diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c index 4032bf3..7ca0b3e 100644 --- a/utils/mount/stropts.c +++ b/utils/mount/stropts.c @@ -663,6 +663,7 @@ static int nfs_try_mount_v3v2(struct nfsmount_info *mi) case ECONNREFUSED: case EOPNOTSUPP: case EHOSTUNREACH: + case ESPIPE: continue; default: goto out; @@ -848,6 +849,7 @@ static int nfs_is_permanent_error(int error) case ETIMEDOUT: case ECONNREFUSED: case EHOSTUNREACH: + case ESPIPE: return 0; /* temporary */ default: return 1; /* permanent */ -- Dick -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
