nfsv4 相关；NFSv4文件锁

NAME="Ubuntu" VERSION="18.04.5 LTS (Bionic Beaver)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 18.04.5 LTS" VERSION_ID="18.04" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" VERSION_CODENAME=bionic UBUNTU_CODENAME=bionic

➜  ~ apt show -a nfs-common Package: nfs-common Version: 1:1.3.4-2.1ubuntu5.3 Priority: optional Section: net Source: nfs-utils Origin: Ubuntu Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com> Original-Maintainer: Debian kernel team <debian-kernel@lists.debian.org> Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 768 kB Provides: nfs-client Depends: libc6 (>= 2.15), libcap2 (>= 1:2.10), libcom-err2 (>= 1.01), libdevmapper1.02.1 (>= 2:1.02.97), libevent-2.1-6 (>= 2.1.8-stable), libgssapi-krb5-2 (>= 1.14+dfsg), libkeyutils1 (>= 1.5.9), libkrb5-3 (>= 1.6.dfsg.2), libmount1 (>= 2.19.1), libnfsidmap2, libtirpc1 (>= 0.2.4), libwrap0 (>= 7.6-4~), rpcbind, adduser, ucf, lsb-base (>= 1.3-9ubuntu3), keyutils Recommends: python3 Suggests: open-iscsi, watchdog Conflicts: nfs-client Breaks: nfs-kernel-server (<< 1:1.2.8-6~) Replaces: mount (<< 2.13~), nfs-client, nfs-kernel-server (<< 1:1.2.8-6~) Homepage: http://nfs.sourceforge.net/ Supported: 5y Download-Size: 206 kB APT-Manual-Installed: yes APT-Sources: http://mirrors.aliyun.com/ubuntu bionic-updates/main amd64 Packages Description: NFS support files common to client and server  Use this package on any machine that uses NFS, either as client or  server.  Programs included: lockd, statd, showmount, nfsstat, gssd,  idmapd and mount.nfs.  Package: nfs-common Version: 1:1.3.4-2.1ubuntu5 Priority: optional Section: net Source: nfs-utils Origin: Ubuntu Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com> Original-Maintainer: Debian kernel team <debian-kernel@lists.debian.org> Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 766 kB Provides: nfs-client Depends: libc6 (>= 2.15), libcap2 (>= 1:2.10), libcomerr2 (>= 1.01), libdevmapper1.02.1 (>= 2:1.02.97), libevent-2.1-6 (>= 2.1.8-stable), libgssapi-krb5-2 (>= 1.14+dfsg), libkeyutils1 (>= 1.5.9), libkrb5-3 (>= 1.6.dfsg.2), libmount1 (>= 2.19.1), libnfsidmap2, libtirpc1 (>= 0.2.4), libwrap0 (>= 7.6-4~), rpcbind, adduser, ucf, lsb-base (>= 1.3-9ubuntu3), keyutils Recommends: python3 Suggests: open-iscsi, watchdog Conflicts: nfs-client Breaks: nfs-kernel-server (<< 1:1.2.8-6~) Replaces: mount (<< 2.13~), nfs-client, nfs-kernel-server (<< 1:1.2.8-6~) Homepage: http://nfs.sourceforge.net/ Supported: 5y Download-Size: 205 kB APT-Sources: http://mirrors.aliyun.com/ubuntu bionic/main amd64 Packages Description: NFS support files common to client and server  Use this package on any machine that uses NFS, either as client or  server.  Programs included: lockd, statd, showmount, nfsstat, gssd,  idmapd and mount.nfs.

apt show -a nfs-kernel-server Package: nfs-kernel-server Version: 1:1.3.4-2.1ubuntu5.3 Priority: optional Section: net Source: nfs-utils Origin: Ubuntu Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com> Original-Maintainer: Debian kernel team <debian-kernel@lists.debian.org> Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 345 kB Provides: knfs, nfs-server Depends: libblkid1 (>= 2.16), libc6 (>= 2.15), libcap2 (>= 1:2.10), libsqlite3-0 (>= 3.5.9), libtirpc1 (>= 0.2.4), libwrap0 (>= 7.6-4~), nfs-common (= 1:1.3.4-2.1ubuntu5.3), ucf, netbase, lsb-base (>= 1.3-9ubuntu3), keyutils Conflicts: knfs, nfs-server Replaces: knfs, nfs-server Homepage: http://nfs.sourceforge.net/ Supported: 5y Download-Size: 93.8 kB APT-Manual-Installed: yes APT-Sources: http://mirrors.aliyun.com/ubuntu bionic-updates/main amd64 Packages Description: support for NFS kernel server  The NFS kernel server is currently the recommended NFS server for use  with Linux, featuring features such as NFSv3 and NFSv4, Kerberos  support via GSS, and much more. It is also significantly faster and  usually more reliable than the user-space NFS servers (from the  unfs3 and nfs-user-server packages). However, it is more difficult to  debug than the user-space servers, and has a slightly different  feature set.  .  This package contains the user-space support needed to use the  NFS kernel server. Most administrators wishing to set up an NFS server  would want to install this package.  Package: nfs-kernel-server Version: 1:1.3.4-2.1ubuntu5 Priority: optional Section: net Source: nfs-utils Origin: Ubuntu Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com> Original-Maintainer: Debian kernel team <debian-kernel@lists.debian.org> Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 344 kB Provides: knfs, nfs-server Depends: libblkid1 (>= 2.16), libc6 (>= 2.15), libcap2 (>= 1:2.10), libsqlite3-0 (>= 3.5.9), libtirpc1 (>= 0.2.4), libwrap0 (>= 7.6-4~), nfs-common (= 1:1.3.4-2.1ubuntu5), ucf, netbase, lsb-base (>= 1.3-9ubuntu3), keyutils Conflicts: knfs, nfs-server Replaces: knfs, nfs-server Homepage: http://nfs.sourceforge.net/ Supported: 5y Download-Size: 94.0 kB APT-Sources: http://mirrors.aliyun.com/ubuntu bionic/main amd64 Packages Description: support for NFS kernel server  The NFS kernel server is currently the recommended NFS server for use  with Linux, featuring features such as NFSv3 and NFSv4, Kerberos  support via GSS, and much more. It is also significantly faster and  usually more reliable than the user-space NFS servers (from the  unfs3 and nfs-user-server packages). However, it is more difficult to  debug than the user-space servers, and has a slightly different  feature set.  .  This package contains the user-space support needed to use the  NFS kernel server. Most administrators wishing to set up an NFS server  would want to install this package.

/. /etc /etc/default /etc/default/nfs-common /etc/init.d /etc/init.d/nfs-common /etc/request-key.d /etc/request-key.d/id_resolver.conf /lib /lib/systemd /lib/systemd/system /lib/systemd/system/auth-rpcgss-module.service /lib/systemd/system/nfs-client.target /lib/systemd/system/nfs-config.service /lib/systemd/system/nfs-idmapd.service /lib/systemd/system/nfs-utils.service /lib/systemd/system/proc-fs-nfsd.mount /lib/systemd/system/rpc-gssd.service /lib/systemd/system/rpc-statd-notify.service /lib/systemd/system/rpc-statd.service /lib/systemd/system/rpc-svcgssd.service /lib/systemd/system/run-rpc_pipefs.mount /sbin /sbin/mount.nfs /sbin/osd_login /sbin/rpc.statd /sbin/showmount /sbin/sm-notify /usr /usr/lib /usr/lib/systemd /usr/lib/systemd/scripts /usr/lib/systemd/scripts/nfs-utils_env.sh /usr/sbin /usr/sbin/blkmapd /usr/sbin/mountstats /usr/sbin/nfsidmap /usr/sbin/nfsiostat /usr/sbin/nfsstat /usr/sbin/rpc.gssd /usr/sbin/rpc.idmapd /usr/sbin/rpc.svcgssd /usr/sbin/rpcdebug /usr/sbin/start-statd /usr/share /usr/share/bug /usr/share/bug/nfs-common /usr/share/bug/nfs-common/control /usr/share/bug/nfs-common/script /usr/share/bug/nfs-utils /usr/share/bug/nfs-utils/control /usr/share/bug/nfs-utils/presubj /usr/share/doc /usr/share/doc/nfs-common /usr/share/doc/nfs-common/README.Debian.nfsv4 /usr/share/doc/nfs-common/changelog.Debian.gz /usr/share/doc/nfs-common/copyright /usr/share/lintian /usr/share/lintian/overrides /usr/share/lintian/overrides/nfs-common /usr/share/man /usr/share/man/man5 /usr/share/man/man5/nfs.5.gz /usr/share/man/man5/nfsidmap.5.gz /usr/share/man/man5/nfsmount.conf.5.gz /usr/share/man/man8 /usr/share/man/man8/blkmapd.8.gz /usr/share/man/man8/gssd.8.gz /usr/share/man/man8/idmapd.8.gz /usr/share/man/man8/mount.nfs.8.gz /usr/share/man/man8/mountstats.8.gz /usr/share/man/man8/nfsiostat.8.gz /usr/share/man/man8/nfsstat.8.gz /usr/share/man/man8/rpcdebug.8.gz /usr/share/man/man8/showmount.8.gz /usr/share/man/man8/sm-notify.8.gz /usr/share/man/man8/statd.8.gz /usr/share/man/man8/svcgssd.8.gz /usr/share/man/man8/umount.nfs.8.gz /usr/share/nfs-common /usr/share/nfs-common/conffiles /usr/share/nfs-common/conffiles/idmapd.conf /usr/share/nfs-common/conffiles/nfs-common.default /var /var/lib /var/lib/nfs /var/lib/nfs/sm /var/lib/nfs/sm.bak /var/lib/nfs/state /lib/systemd/system/nfs-common.service /sbin/mount.nfs4 /sbin/umount.nfs /sbin/umount.nfs4 /usr/share/man/man8/rpc.gssd.8.gz /usr/share/man/man8/rpc.idmapd.8.gz /usr/share/man/man8/rpc.sm-notify.8.gz /usr/share/man/man8/rpc.statd.8.gz /usr/share/man/man8/rpc.svcgssd.8.gz

/. /etc /etc/init.d /etc/init.d/nfs-kernel-server /lib /lib/systemd /lib/systemd/system /lib/systemd/system/nfs-blkmap.service /lib/systemd/system/nfs-mountd.service /lib/systemd/system/nfs-server.service /sbin /sbin/nfsdcltrack /usr /usr/sbin /usr/sbin/exportfs /usr/sbin/rpc.mountd /usr/sbin/rpc.nfsd /usr/share /usr/share/bug /usr/share/bug/nfs-kernel-server /usr/share/bug/nfs-kernel-server/script /usr/share/doc /usr/share/doc/nfs-kernel-server /usr/share/doc/nfs-kernel-server/NEWS.Debian.gz /usr/share/doc/nfs-kernel-server/copyright /usr/share/lintian /usr/share/lintian/overrides /usr/share/lintian/overrides/nfs-kernel-server /usr/share/man /usr/share/man/man5 /usr/share/man/man5/exports.5.gz /usr/share/man/man7 /usr/share/man/man7/nfsd.7.gz /usr/share/man/man8 /usr/share/man/man8/exportfs.8.gz /usr/share/man/man8/mountd.8.gz /usr/share/man/man8/nfsd.8.gz /usr/share/man/man8/nfsdcltrack.8.gz /usr/share/nfs-kernel-server /usr/share/nfs-kernel-server/conffiles /usr/share/nfs-kernel-server/conffiles/etc.exports /usr/share/nfs-kernel-server/conffiles/nfs-kernel-server.default /var /var/lib /var/lib/nfs /var/lib/nfs/etab /var/lib/nfs/rmtab /var/lib/nfs/v4recovery /var/lib/nfs/xtab /lib/systemd/system/nfs-kernel-server.service /usr/share/doc/nfs-kernel-server/changelog.Debian.gz /usr/share/man/man8/rpc.mountd.8.gz /usr/share/man/man8/rpc.nfsd.8.gz

# /etc/exports: the access control list for filesystems which may be exported #        to NFS clients.  See exports(5). # # Example for NFSv2 and NFSv3: # /srv/homes       hostname1(rw,sync,no_subtree_check) hostname2(ro,sync,no_subtree_check) # # Example for NFSv4: # /srv/nfs4        gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check) # /srv/nfs4/homes  gss/krb5i(rw,sync,no_subtree_check) # /home/yaowen/nfsv4 192.168.0.0/24(rw,nohide,insecure,no_subtree_check,no_root_squash,sync)

systemctl restart nfs-kernel-server.service systemctl restart nfs-idmapd.service

showmount -e 192.168.0.125

mount -t nfs4 -o proto=tcp,port=2049 192.168.0.125:/home/yaowen/nfsv4 /mnt/nfs
mount -t nfs4 -o proto=tcp,port=2049,nfsvers=4.2 192.168.0.125:/home/yaowen/nfsv4 /mnt/nfs

192.168.0.125:/home/yaowen/nfsv4 nfs4      352G   16G  318G   5% /mnt/nfs

Under  Linux  2.6.32  and later kernel versions, mount.nfs can mount all NFS file system versions.  Under earlier Linux kernel versions, mount.nfs4 must be used for mounting NFSv4 file systems while mount.nfs must be used for NFSv3 and v2.

The  Network  Lock  Manager protocol is a separate sideband protocol used to manage file locks in NFS version 2 and version 3.  To support lock recovery after a client or server reboot, a second sideband protocol -- known as the Network Status Manager protocol -- is also required.  In NFS version 4, file locking is sup‐ ported directly in the main NFS protocol, and the NLM and NSM sideband protocols are not used.

/home/yaowen/nfsv4 192.168.0.0/24(rw,insecure,sync,nohide,no_subtree_check,no_root_squash) To apply changes to this file, run exportfs -ra or restart the NFS server.

mount -t nfs4 -o nfsvers=4.2,hard,retrans=5,rsize=1048576,wsize=1048576,ac,sharecache,proto=tcp,port=2049,lock,cto,local_lock=none 192.168.0.125:/home/yaowen/nfsv4 /mnt/nfs