http://ask.loongnix.org/?/article/80

 
 作業系統版本

loongnix(Fedora21) 20170726及以前版本，安裝docker 1.12.2後，建立容器正常，但是docker stop容器會阻塞住，容器無法正常退出。

解決方法

此問題是Docker官方版本缺少對MIPS平臺的epoll支援。

現在龍芯已經修正這個問題，loongnix.org上已經提交了功能正常的docker包。

執行以下命令即可自動安裝新版本的包。

# yum update docker

# service docker restart

 注意

# ps aux | grep docker

loongson  7477  0.0  0.0 107488  1728 pts/5    S+   16:44   0:00 grep --color=auto docker
root     17693  0.0  0.2 492960  8560 ?        Ssl  9月21   0:54 /usr/libexec/docker/docker-containerd-current --listen unix:///run/containerd.sock --shim /usr/libexec/docker/docker-containerd-shim-current
root     17719  0.3  0.8 826192 35920 ?        Ssl  9月21   5:16 /usr/bin/dockerd-current --add-runtime oci=/usr/libexec/docker/docker-runc-current --default-runtime=oci --containerd /run/containerd.sock --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current --selinux-enabled --log-driver=journald
root     17902  0.0  0.0 196512  2544 ?        Sl   9月21   0:00 /usr/libexec/docker/docker-containerd-shim-current fac1ee0c5de07257e5d65215abae4728bd08ec245026693d2b0444fe3f9d0745 /var/run/docker/libcontainerd/fac1ee0c5de07257e5d65215abae4728bd08ec245026693d2b0444fe3f9d0745 /usr/libexec/docker/docker-runc-current
root     17986  0.0  0.2 351472 11776 pts/2    Sl+  9月21   0:00 /usr/bin/docker-current attach fac1

ps 命令輸出的每一行是一個docker程序，第2列是程序號，對所有這些程序號執行kill命令，例如：

# kill -9 17693 17719  17902 17986

 
執行kill命令後，務必再次執行ps命令，保證所有docker程序都已經被kill掉。
最後，再重新啟動docker服務：

# service docker restart

這樣才能確保執行的docker是新版本。
 
如果覺得上面的步驟實在太費事，有一個簡單的方法，重新啟動整個機器。

附：原始碼包連結

http://ftp.loongnix.org/os/loongnix/1.0/SRPMS/d/docker-1.12.2-5.git8f1975c.2.fc21.loongson.src.rpm

From 57de5faf811e68fea1828faba6cc5ac2bb60474d Mon Sep 17 00:00:00 2001
Date: Thu, 21 Sep 2017 20:46:26 +0800
Subject: [PATCH] docker 1.12.2 fix stop failed on mips64le

---
 .../archutils/epoll.go                             |  2 +-
 .../archutils/epoll_mips64le.go                    | 73 ++++++++++++++++++++++
 2 files changed, 74 insertions(+), 1 deletion(-)
 create mode 100644 containerd-0366d7e9693c930cf18c0f50cc16acec064e96c5/archutils/epoll_mips64le.go

diff --git a/containerd-0366d7e9693c930cf18c0f50cc16acec064e96c5/archutils/epoll.go b/containerd-0366d7e9693c930cf18c0f50cc16acec064e96c5/archutils/epoll.go
index 3f08d8f..bca5015 100644
--- a/containerd-0366d7e9693c930cf18c0f50cc16acec064e96c5/archutils/epoll.go
+++ b/containerd-0366d7e9693c930cf18c0f50cc16acec064e96c5/archutils/epoll.go
@@ -1,4 +1,4 @@
-// +build linux,!arm64
+// +build linux,!arm64,!mips64le
 
 package archutils
 
diff --git a/containerd-0366d7e9693c930cf18c0f50cc16acec064e96c5/archutils/epoll_mips64le.go b/containerd-0366d7e9693c930cf18c0f50cc16acec064e96c5/archutils/epoll_mips64le.go
new file mode 100644
index 0000000..524f0cc
--- /dev/null
+++ b/containerd-0366d7e9693c930cf18c0f50cc16acec064e96c5/archutils/epoll_mips64le.go
@@ -0,0 +1,73 @@
+// +build linux,mips64le
+
+package archutils
+
+// #include <sys/epoll.h>
+/*
+int EpollCreate1(int flag) {
+	return epoll_create1(flag);
+}
+
+int EpollCtl(int efd, int op,int sfd, int events, int fd) {
+	struct epoll_event event;
+	event.events = events;
+	event.data.fd = fd;
+
+	return epoll_ctl(efd, op, sfd, &event);
+}
+
+struct event_t {
+	uint32_t events;
+	int fd;
+};
+
+struct epoll_event events[128];
+int run_epoll_wait(int fd, struct event_t *event) {
+	int n, i;
+	n = epoll_wait(fd, events, 128, -1);
+	for (i = 0; i < n; i++) {
+		event[i].events = events[/i].events;
+		event.fd = events.data.fd;
+	}
+	return n;
+}
+*/
+import "C"
+
+import (
+	"fmt"
+	"syscall"
+	"unsafe"
+)
+
+// EpollCreate1 calls a C implementation
+func EpollCreate1(flag int) (int, error) {
+	fd := int(C.EpollCreate1(C.int(flag)))
+	if fd < 0 {
+		return fd, fmt.Errorf("failed to create epoll, errno is %d", fd)
+	}
+	return fd, nil
+}
+
+// EpollCtl calls a C implementation
+func EpollCtl(epfd int, op int, fd int, event *syscall.EpollEvent) error {
+	errno := C.EpollCtl(C.int(epfd), C.int(syscall.EPOLL_CTL_ADD), C.int(fd), C.int(event.Events), C.int(event.Fd))
+	if errno < 0 {
+		return fmt.Errorf("Failed to ctl epoll")
+	}
+	return nil
+}
+
+// EpollWait calls a C implementation
+func EpollWait(epfd int, events syscall.EpollEvent, msec int) (int, error) {
+	var c_events [128]C.struct_event_t
+	n := int(C.run_epoll_wait(C.int(epfd), (*C.struct_event_t)(unsafe.Pointer(&c_events))))
+	if n < 0 {
+		return int(n), fmt.Errorf("Failed to wait epoll")
+	}
+	for i := 0; i < n; i++ {
+		events.Fd = int32(c_events.fd)
+		events.Events = uint32(c_events[i].events)
+	}
+	return int(n), nil
+}
-- 
2.1.0[/i]