我正在尝试在使用 Yocto 构建的 Linux 映像上启用 NFS。该映像在开发板上运行 - Qualcomm RB5。启动后，mount.nfs 似乎不起作用，抱怨
mount.nfs: No such device
当我使用 dmesg | 检查时grep nfs，我得到以下信息，但无法弄清楚失败的原因是什么
[ 7.323526] systemd[597]: proc-fs-nfsd.mount: Failed to connect stdout to the journal socket, ignoring: No such file or directory
[ 7.326328] request_module fs-nfsd succeeded, but still no fs?
[ 7.337908] systemd[1]: proc-fs-nfsd.mount: Mount process exited, code=exited, status=32/n/a
[ 7.338655] systemd[1]: proc-fs-nfsd.mount: Failed with result 'exit-code'.
[ 7.346027] systemd[1]: nfs-mountd.service: Job nfs-mountd.service/start failed with result 'dependency'.
[ 7.346754] systemd[1]: nfs-server.service: Job nfs-server.service/start failed with result 'dependency'.
[ 7.454332] systemd[649]: proc-fs-nfsd.mount: Failed to connect stdout to the journal socket, ignoring: No such file or directory
[ 7.459122] systemd[1]: proc-fs-nfsd.mount: Mount process exited, code=exited, status=32/n/a
[ 7.460157] systemd[1]: proc-fs-nfsd.mount: Failed with result 'exit-code'.
[ 8.235626] systemd[726]: proc-fs-nfsd.mount: Failed to connect stdout to the journal socket, ignoring: No such file or directory
[ 8.241962] systemd[1]: proc-fs-nfsd.mount: Mount process exited, code=exited, status=32/n/a
[ 8.243164] systemd[1]: proc-fs-nfsd.mount: Failed with result 'exit-code'.
当我使用“”检查时systemctl status proc-fs-nfsd.mount，它显示以下内容：
Jan 01 06:55:40 qrb5165-rb5 mount[1377]: mount: /proc/fs/nfsd: unknown filesystem type 'nfsd'.
这很令人困惑，因为我以为我启用了 nfs。
我确保在 local.conf 中启用了 NFS 支持。以下是我用来启用 NFS 的行：
DISTRO_FEATURES_append = " nfs"
EXTRA_IMAGE_FEATURES += "nfs-server"
EXTRA_IMAGE_FEATURES += "nfs-client"
我错过了什么吗？
答案1
经过几个小时的挖掘，我刚刚让 NFS 在设备上运行。该失败是由我的新手错误引起的尚未在内核中启用 NFS 文件系统支持所以没有构建相应的内核驱动程序。我想我以某种方式假设 Yocto 会为你做到这一点，但实际上它不会。我在内核配置中添加了以下更改以在设备上启用 NFS：
CONFIG_NFS_FS=y
CONFIG_NFSD=y