[Bug 1973101] Re: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work
> It was only partly successful, it failed to merge udp = y into the new conf. I don't see specific UDP options in the two /etc/default/nfs-* files attached to this bug, so there was nothing to convert to /etc/nfs.conf.d/local.conf regarding UDP. It's probably the default that changed (before udp was enabled by default, now it isn't, for some definition of "before"). Determining what the default was in each previous release we could be upgrading from can quickly become complex and introduces risk of new bugs, but if this becomes a common issue, I might look into that option. I think addressing https://bugs.launchpad.net/ubuntu/+source/nfs- utils/+bug/1973630 is the best step forward for the moment, and should alleviate most concerns. ** Changed in: nfs-utils (Ubuntu) Status: Incomplete => Opinion -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973101 Title: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1973101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973101] Re: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work
It was only partly successful, it failed to merge udp = y into the new conf. Also Ubuntu's decision to compile their kernels without UDP support is dumb. It does not make a huge difference in size or speed of the kernel and it does eliminate legacy support as the original NFS version 2 and version 3 specifications had no support for TCP. As it is I self compile a non-trivial portion of my server infrastructure because Ubuntu just does not provide the facilities that I need. I switched to Ubuntu from Redhat in 2012, when Redhat got to be this way. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973101 Title: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1973101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973101] Re: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work
The kernel we ship has nfs udp disabled, I missed that you were running a custom kernel. But thanks for the feedback. I think we need to remove or add a big fat comment to the obsolete /etc/default/nfs-* files, and I filed a bug for it: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1973630 That being said, the upgrade process should have migrated all the /etc/default/nfs-* options to /etc/nfs.conf.d/local.conf, which gets merged with /etc/nfs.conf at runtime. You can see the final merged result with nfsconf --dump. If there was a problem in migrating some option you had, that's something we will want to fix, and would appreciate a bug about it. But fresh installs will have /etc/nfs.conf only, with the defaults. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973101 Title: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1973101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973101] Re: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work
This is just plain WRONG. The issue is NOT the kernel, upstream or otherwise. I am using 5.17.7 compiled directly from kernel source off of kernel.org, and was using the SAME kernel under 20.04. The issue was your new configuration file, /etc/nfs.conf, that did not exist prior to 22.04, and thus I had no reason to look for it, having UDP disabled by default even for versions 2 and 3 of NFS which makes ZERO sense as version 2 and 3 of NFS did not support TCP. Once I was made aware of this conf file by you simply turning version 2 and UDP on resolved my issues. You can close this bug if you like but having udp = n by default in this conf file is dumb, the current upstream kernel supports it just fine. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973101 Title: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1973101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973101] Re: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work
NFS UDP was disabled in the upstream kernel[1] in 2019, and the first Ubuntu release with that change was 20.10 (groovy). I didn't find this change in the 20.10 release notes, and added this bit to the 22.04 release notes[2] about a month before the release: """ UDP disabled for NFS mounts Since Ubuntu 20.10 (“Groovy Gorilla”), the kernel option CONFIG_NFS_DISABLE_UDP_SUPPORT=y is set and this disables using UDP as the transport for NFS mounts, regardless of NFS version. In practice, if you try to use udp, you will get this error: $ sudo mount f1:/storage /mnt -o udp mount.nfs: an incorrect mount option was specified """ If you can't get the older clients to use TCP, then I think the only way is for you to stick to an older Ubuntu release that still has UDP NFS support, like Focal (20.04). 1. https://patchwork.kernel.org/project/linux-nfs/patch/20191121160651.5317-1-olga.kornievsk...@gmail.com/ 2. https://discourse.ubuntu.com/t/jammy-jellyfish-release-notes/24668 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973101 Title: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1973101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 1973101] Re: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work
Thank you very much. The disabling of udp by default is what broke version 2 and version 3, and since TCP were not part of the NFS specification for either of these versions, making it the default makes ZERO sense. On 5/12/22 11:44, Andreas Hasenack wrote: > rpcinfo -s j1-nfs-server -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973101 Title: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1973101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973101] Re: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work
I did some tests, and looks like I was able to configure ubuntu 22.04 to export NFS v2. I was able to mount from an ubuntu 14.04 machine specifying vers=2: t1 is trusty (14.04), j1 is jammy (22.04): root@t1:~# rpcinfo -s j1-nfs-server program version(s) netid(s) service owner 10 2,3,4 local,udp,tcp,udp6,tcp6 portmapper superuser 100024 1 tcp6,udp6,tcp,udpstatus 113 15 3,2,1 tcp6,udp6,tcp,udpmountd superuser 13 4,3,2 tcp6,tcp nfs superuser 100227 3,2 tcp6,tcp - superuser 100021 4,3,1 tcp6,udp6,tcp,udpnlockmgrsuperuser root@t1:~# mount j1-nfs-server:/storage /mnt -o vers=2 root@t1:~# mount -t nfs j1-nfs-server:/storage on /mnt type nfs (rw,vers=2,addr=192.168.122.136) Note that TCP was used, though, not UDP. To allow the 22.04 server to export via UDP, add "udp=y" to the [nfsd] section in /etc/nfs.conf and restart nfs-utils and nfs-server, and then I can specify udp: root@t1:~# mount j1-nfs-server:/storage /mnt -o vers=2,udp j1-nfs-server:/storage on /mnt type nfs (rw,vers=2,udp,addr=192.168.122.136) The config I used on the 22.04 server was: root@j1-nfs-server:~# nfsconf --dump [general] pipefs-directory = /run/rpc_pipefs [mountd] manage-gids = 1 [nfsd] debug = all rdma = n threads = 8 udp = y vers2 = y vers2,3,4 = y vers3 = y vers4 = y vers4.0 = y vers4.1 = y vers4.2 = y That being said, from 22.04 I CANNOT mount an NFSv2 export: root@j1-nfs-server:~# mount j1-nfs-server:/storage /mnt -o vers=2 mount.nfs: requested NFS version or transport protocol is not supported So the TL:DR seems to be that 22.04 can export NFSv2, even via UDP, but not MOUNT NFSv2. To make progress in this bug, please show: - nfsconf --dump on the 22.04 server - attempted mount error on the NFSv2 and NFSv3 clients, including dmesg and /var/log/syslog (or equivalent) covering the attempt - try enabling UDP in your 22.04 server's /etc/nfs.conf. Keep in mind that, since your server was upgraded, you will also have an /etc/nfs.conf.d/local.conf. You may want to merge local.conf with nfs.conf. See the release notes at [1] for more details, and perhaps the server guide[2] where the new nfs changes are also documented, in particular the upgrade scenario. 1. https://discourse.ubuntu.com/t/jammy-jellyfish-release-notes/24668 2. https://ubuntu.com/server/docs/service-nfs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973101 Title: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1973101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973101] Re: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work
Hi, I believe NFS version 2 is no longer supported. I will check when that was dropped exactly. Regarding v3, the UDP transport is no longer available, only TCP. Can you check if your v3 clients are forcing UDP perhaps, and thus failing? It would in fact be helpful if you could show the error you are getting from the clients, and any useful logs they might have. > I am also not at all appreciative of the unauthorized changes that the > upgrade made to my exports > file. I'm not sure about the above, as far as I know the upgrade process does not touch /etc/exports. It will create a new /etc/nfs.conf.d/local.conf file if the upgrade detected you made changes to /etc/default/nfs-*. What changes do you think were made to /etc/exports? ** Changed in: nfs-utils (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973101 Title: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1973101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973101] Re: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work
ubuntu-bug included mounts of other file systems on this machine, but it is the EXPORTS that aren't working NOT the mounts from other systems. Here is the content of /etc/exports: # /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/nfs4gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check) # /srv/nfs4/homes gss/krb5i(rw,sync,no_subtree_check) # /var/list 204.122.16.0/24(rw,async,no_root_squash,secure,subtree_check) /mail 204.122.16.4(rw,async,no_root_squash,insecure,subtree_check) /mail 204.122.16.0/24(rw,async,no_root_squash,secure,subtree_check) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973101 Title: After upgrade to 22.04 NFS exports for vers 2 and 3 no longer work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1973101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
