Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.7 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.7-rc7 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1602827 Title: NFS server "shutting down socket" during large file copies Ubunutu 14.04.4 LTS Status in linux package in Ubuntu: Incomplete Bug description: This is very similar to bug 585657: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/585657 Difference is my server doesn't freeze, it closes the socket. System integrity is still responsive. I'm running NFS version 4 on Ubuntu 14.04.4 LTS and during large rsync file copies (200MB+) they die midway. This is killing my zimbra email backups :(. I haven't had the system freeze during this scenario but what ends up happening is the copy fails on the client side and then my NFS server shuts the socket down due to excessive failures. Smaller file copies work perfectly fine. Here are the client/server logs. #Client Jul 9 01:00:39 mailserv01 kernel: [591473.216168] nfs: server NFS-Backup01 not responding, still trying Jul 9 01:00:39 mailserv01 kernel: [591473.216174] nfs: server NFS-Backup01 not responding, still trying Jul 9 01:00:39 mailserv01 kernel: [591473.218841] nfs: server NFS-Backup01 OK Jul 9 01:00:39 mailserv01 kernel: [591473.219159] nfs: server NFS-Backup01 OK Jul 9 01:01:14 mailserv01 kernel: [591508.710863] nfs: server NFS-Backup01 not responding, still trying Jul 9 01:08:16 mailserv01 kernel: [591929.870358] nfs: server NFS-Backup01 OK Jul 9 01:08:44 mailserv01 kernel: [591958.514953] nfs: server NFS-Backup01 not responding, still trying Jul 9 01:10:23 mailserv01 kernel: [592056.840273] nfs: server NFS-Backup01 OK Jul 9 01:11:19 mailserv01 kernel: [592113.298900] nfs: server NFS-Backup01 not responding, still trying Jul 9 01:13:07 mailserv01 kernel: [592221.275966] nfs: server NFS-Backup01 OK Jul 9 01:15:22 mailserv01 kernel: [592355.580401] nfs: server NFS-Backup01 not responding, still trying Jul 9 01:15:22 mailserv01 kernel: [592355.615649] nfs: server NFS-Backup01 OK Jul 9 01:16:03 mailserv01 kernel: [592397.459848] nfs: server NFS-Backup01 not responding, still trying Jul 9 01:16:08 mailserv01 kernel: [592401.663381] nfs: server NFS-Backup01 OK Jul 9 01:17:06 mailserv01 kernel: [592460.381059] nfs: server NFS-Backup01 not responding, still trying #NFS Server Jul 9 01:01:51 NFS-Backup01 kernel: [130980.762798] RPC request reserved 156 but used 176 Jul 9 01:08:28 NFS-Backup01 kernel: [131377.839675] RPC request reserved 156 but used 176 Jul 9 01:08:46 NFS-Backup01 kernel: [131395.943517] rpc-srv/tcp: nfsd: got error -32 when sending 136 bytes - shutting down socket Jul 9 01:10:17 NFS-Backup01 kernel: [131486.962508] RPC request reserved 156 but used 176 Jul 9 01:10:22 NFS-Backup01 kernel: [131492.447565] RPC request reserved 156 but used 176 Jul 9 01:10:27 NFS-Backup01 kernel: [131496.837561] rpc-srv/tcp: nfsd: got error -32 when sending 136 bytes - shutting down socket Jul 9 01:10:54 NFS-Backup01 kernel: [131524.423501] RPC request reserved 156 but used 176 Jul 9 01:15:31 NFS-Backup01 kernel: [131801.603553] rpc-srv/tcp: nfsd: got error -32 when sending 136 bytes - shutting down socket Jul 9 01:16:55 NFS-Backup01 kernel: [131885.232973] rpc-srv/tcp: nfsd: got error -32 when sending 136 bytes - shutting down socket #Client fstab NFS-Backup01:/mnt/backup /mnt/backup nfs rsize=8192,wsize=8192,nfsvers=4,hard,timeo=14,intr #NFS Server fstab /mnt/backup /mnt/backup none bind 0 0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1602827/+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
