这导致NFS挂起到我们不得不重启的地步。 我们在Fedora 25上运行NIS。NFS和NSF-server不会启动。 每一秒钟甚至有一个“ systemd: Looping too fast. Throttling execution a little每秒钟都会systemd: Looping too fast. Throttling execution a little ”的信息。 我在这里尝试了一些debugging选项，但是我不确定要查找什么。 我会向Bugzilla发布一个bug，但是我希望这里有人知道它可能是什么。
nfs-utils x86_64 1:2.1.1-5.rc4.fc25 kernel at the time was 4.11.5-200.fc25.x86_64 systemctl status nfs-idmapd * nfs-idmapd.service - NFSv4 ID-name mapping service Loaded: loaded (/usr/lib/systemd/system/nfs-idmapd.service; static; vendor preset: disabled) Active: active (running) since Fri 2017-06-30 21:49:52 EDT; 13min ago Process: 16991 ExecStart=/usr/sbin/rpc.idmapd $RPCIDMAPDARGS (code=exited, status=0/SUCCESS) Main PID: 16992 (rpc.idmapd) Tasks: 1 (limit: 4915) CGroup: /system.slice/nfs-idmapd.service `-16992 /usr/sbin/rpc.idmapd systemctl status nfs * nfs-server.service - NFS server and services Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled) Drop-In: /run/systemd/generator/nfs-server.service.d `-order-with-mounts.conf Active: activating (start) since Fri 2017-06-30 21:26:58 EDT; 37min ago Main PID: 15798 (rpc.nfsd) Tasks: 4 (limit: 4915) CGroup: /system.slice/nfs-server.service |- 5570 /usr/sbin/rpc.nfsd 8 |- 6053 /usr/sbin/rpc.nfsd 8 |- 8032 /usr/sbin/rpc.nfsd 8 `-15798 /usr/sbin/rpc.nfsd 8 Jun 30 21:26:58 ourserver systemd[1]: Starting NFS server and services... systemctl status nfs-server * nfs-server.service - NFS server and services Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled) Drop-In: /run/systemd/generator/nfs-server.service.d `-order-with-mounts.conf Active: activating (start) since Fri 2017-06-30 21:26:58 EDT; 38min ago Main PID: 15798 (rpc.nfsd) Tasks: 4 (limit: 4915) CGroup: /system.slice/nfs-server.service |- 5570 /usr/sbin/rpc.nfsd 8 |- 6053 /usr/sbin/rpc.nfsd 8 |- 8032 /usr/sbin/rpc.nfsd 8 `-15798 /usr/sbin/rpc.nfsd 8 Jun 30 21:26:58 ourserver systemd[1]: Starting NFS server and services... From messages logs: Jun 30 21:49:52 ourserver systemd[1]: Starting NFSv4 ID-name mapping service... Jun 30 21:49:52 ourserver rpc.idmapd[16991]: rpc.idmapd: conf_reinit: open ("(null)", O_RDONLY) failed Jun 30 21:49:52 ourserver rpc.idmapd[16991]: rpc.idmapd: conf_reinit: open ("(null)", O_RDONLY) failed Jun 30 21:49:52 ourserver systemd[1]: Started NFSv4 ID-name mapping service. Logs: Jun 29 02:23:27 dsm rpc.idmapd: rpc.idmapd: conf_reinit: open ("(null)", O_RDONLY) failed Jun 29 02:23:27 dsm rpc.idmapd: rpc.idmapd: conf_reinit: open ("(null)", O_RDONLY) failed Jun 29 02:23:27 dsm kernel: nfsd: last server has exited, flushing export cache Jun 29 02:23:27 dsm systemd: Starting NFS server and services... Jun 29 02:23:27 dsm kernel: divide error: 0000 [#1] SMP Jun 29 02:23:27 dsm kernel: Modules linked in: fuse arc4 md4 nls_utf8 cifs ccm rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_multiport ipt_MASQUERADE nf_nat_masquerade_ipv4 ip6t_REJECT nf_reject_ipv6 nf_con ntrack_ipv6 iptable_nat nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_conntrack nf_nat nf_conntrack libcrc32c ip6table_filter ip6_tables iptable_mangle joydev coretemp kvm iTCO_wdt gpio_ich iTCO_vendor_support irqbypass ses ipmi_ssif enclosure dcdbas scsi_transport_sas i5000_edac ipmi_si edac_core lpc_ich ipmi_devintf i5k_amb ipmi_msghandler shpchp tpm_tis tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc uas usb_storage amdkfd amd_iommu_v2 radeon i2c_algo_bit drm_kms_helper ttm drm ata_gene ric pata_acpi serio_raw Jun 29 02:23:27 dsm kernel: megaraid_sas bnx2 Jun 29 02:23:27 dsm kernel: CPU: 4 PID: 7781 Comm: rpc.nfsd Not tainted 4.11.5-200.fc25.x86_64 #1 Jun 29 02:23:27 dsm kernel: Hardware name: Dell Inc. PowerEdge 1950/0TT740, BIOS 2.2.6 02/05/2008 Jun 29 02:23:27 dsm kernel: task: ffff9290e5034880 task.stack: ffffa770ce0c4000 Jun 29 02:23:27 dsm kernel: RIP: 0010:svc_pool_for_cpu+0x2b/0x80 [sunrpc] Jun 29 02:23:27 dsm kernel: RSP: 0018:ffffa770ce0c7c18 EFLAGS: 00010246 Jun 29 02:23:27 dsm kernel: RAX: 0000000000000000 RBX: ffff9290286a6000 RCX: 0000000000000002 Jun 29 02:23:27 dsm kernel: RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff928ec3d45500 Jun 29 02:23:27 dsm kernel: RBP: ffffa770ce0c7c18 R08: ffff928ec3d45528 R09: 0000000000018783 Jun 29 02:23:27 dsm kernel: R10: ffffffffc06fb100 R11: 0000000000000000 R12: ffff9290286a6010 Jun 29 02:23:27 dsm kernel: R13: ffff9290286a6018 R14: ffff928ec3d45528 R15: ffff928ec3d45500 Jun 29 02:23:27 dsm kernel: FS: 00007f0f69cacc40(0000) GS:ffff9290efd00000(0000) knlGS:0000000000000000 Jun 29 02:23:27 dsm kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jun 29 02:23:27 dsm kernel: CR2: 00007ffede0fe0a8 CR3: 00000001fb7c4000 CR4: 00000000000006e0 Jun 29 02:23:27 dsm kernel: Call Trace: Jun 29 02:23:27 dsm kernel: svc_xprt_do_enqueue+0xef/0x260 [sunrpc] Jun 29 02:23:27 dsm kernel: svc_xprt_received+0x47/0x90 [sunrpc] Jun 29 02:23:27 dsm kernel: svc_add_new_perm_xprt+0x76/0x90 [sunrpc] Jun 29 02:23:27 dsm kernel: svc_addsock+0x14b/0x200 [sunrpc] Jun 29 02:23:27 dsm kernel: ? recalc_sigpending+0x1b/0x50 Jun 29 02:23:27 dsm kernel: ? __getnstimeofday64+0x41/0xd0 Jun 29 02:23:27 dsm kernel: ? do_gettimeofday+0x29/0x90 Jun 29 02:23:27 dsm kernel: write_ports+0x255/0x2c0 [nfsd] Jun 29 02:23:27 dsm kernel: ? _copy_from_user+0x4e/0x80 Jun 29 02:23:27 dsm kernel: ? write_recoverydir+0x100/0x100 [nfsd] Jun 29 02:23:27 dsm kernel: nfsctl_transaction_write+0x48/0x80 [nfsd] Jun 29 02:23:27 dsm kernel: __vfs_write+0x37/0x160 Jun 29 02:23:27 dsm kernel: ? __inet_hash+0xd2/0x260 Jun 29 02:23:27 dsm kernel: vfs_write+0xb5/0x1a0 Jun 29 02:23:27 dsm kernel: SyS_write+0x55/0xc0 Jun 29 02:23:27 dsm kernel: entry_SYSCALL_64_fastpath+0x1a/0xa9 Jun 29 02:23:27 dsm kernel: RIP: 0033:0x7f0f695c8ae0 Jun 29 02:23:27 dsm kernel: RSP: 002b:00007ffede056ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 Jun 29 02:23:27 dsm kernel: RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f0f695c8ae0 Jun 29 02:23:27 dsm kernel: RDX: 0000000000000002 RSI: 00005637ab1dd600 RDI: 0000000000000003 Jun 29 02:23:27 dsm kernel: RBP: 00007ffede056ba0 R08: 0000000000000001 R09: 0000000000000002 Jun 29 02:23:27 dsm kernel: R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000000004 Jun 29 02:23:27 dsm kernel: R13: 00005637abfa37a0 R14: 00005637abfa3720 R15: 00007ffede056658 Jun 29 02:23:27 dsm kernel: Code: 66 66 66 66 90 48 8b 87 98 00 00 00 55 48 89 e5 48 83 78 08 00 74 10 8b 05 97 51 02 00 83 f8 01 74 40 83 f8 02 74 19 31 c0 31 d2 <f7> b7 88 00 00 00 5d 89 d0 48 c1 e0 07 48 03 87 90 00 00 00 c3 Jun 29 02:23:27 dsm kernel: RIP: svc_pool_for_cpu+0x2b/0x80 [sunrpc] RSP: ffffa770ce0c7c18 Jun 29 02:23:27 dsm kernel: ---[ end trace 7a2bfc4aacf7a21e ]---