** Also affects: linux (Ubuntu) Importance: Undecided Status: New
** No longer affects: linux-meta-hwe (Ubuntu) ** Also affects: linux (Ubuntu Disco) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Disco) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: New => Fix Released ** Changed in: linux (Ubuntu Disco) Status: New => In Progress ** Changed in: linux (Ubuntu Disco) Assignee: (unassigned) => Matthew Ruffell (mruffell) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1828978 Title: NFS connections block while causing a high-bandwidth RPC-pingpong between client and server Status in linux package in Ubuntu: Fix Released Status in linux source package in Disco: In Progress Bug description: There's a bug in kernels before Linux 5.0 that affects NFS 4.1 connections. The bug presents itself like this: * On NFS clients: Attempts to access mounted NFS shares associated with the affected server block indefinitely. * On the network: A storm of repeated RPCs between NFS client and server uses a lot of bandwidth. Each RPC is acknoledged by the server with an NFS4ERR_SEQ_MISORDERED error. * Other NFS clients connected to the same NFS server: Performance drops dramatically. A patch is available to fix this problem: <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3453d5708b33efe76f40eca1c0ed60923094b971> Is is possible to integrate the patch into the 4.18 kernel series? I'm using Ubuntu 18.04.2 LTS as NFS client an server. Thank you. Best regards, Frank Burkhardt To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1828978/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp