On Fri, Jun 13, 2014 at 04:11:15PM +0200, Harald Dunkel wrote: > Hi folks, > > I would like to run an NFServer inside a container. The idea > is to mirror the whole NFS service container to a fallback > host using drbd, and to provide preconfigured NFS containers > to whoever needs it. > > Unfortunately the kernel (3.14 of Debian Jessie, backported to > Wheezy) did not share my enthusiasm: > > Jun 13 15:33:55 srvl011a kernel: [ 725.372466] WARNING: CPU: 6 PID: 11134 at /build/linux-v1L7fI/linux-3.14.4/fs/nfsd/nfs4recover.c:1195 nfsd4_umh_cltrack_init+0x42/0x50 [nfsd]() > Jun 13 15:33:55 srvl011a kernel: [ 725.372468] NFSD: attempt to initialize umh client tracking in a container! > Jun 13 15:33:55 srvl011a kernel: [ 725.376800] Modules linked in: veth sha256_ssse3 sha256_generic hmac drbd lru_cache libcrc32c nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc bonding bridge stp llc dm_crypt ioatdma radeon iTCO_wdt iTCO_vendor_support i5400_edac lpc_ich mfd_core rng_core ttm edac_core i2c_i801 i5k_amb coretemp drm_kms_helper psmouse shpchp serio_raw joydev pcspkr evdev drm parport_pc parport processor button kvm tpm_tis tpm thermal_sys ext4 crc16 mbcache jbd2 crc32c btrfs xor raid6_pq dm_mod hid_generic usbhid hid sd_mod crct10dif_generic crc_t10dif crct10dif_common sg sr_mod cdrom ata_generic ehci_pci ata_piix uhci_hcd ehci_hcd libata usbcore e1000e usb_common igb i2c_algo_bit i2c_core dca ptp pps_core 3w_9xxx scsi_mod > Jun 13 15:33:55 srvl011a kernel: [ 725.376868] CPU: 6 PID: 11134 Comm: rpc.nfsd Tainted: G W I 3.14-0.bpo.1-amd64 #1 Debian 3.14.4-1~bpo70+1 > Jun 13 15:33:55 srvl011a kernel: [ 725.376870] Hardware name: Supermicro X7DW3/X7DWN+, BIOS 1.2 11/04/2008 > Jun 13 15:33:55 srvl011a kernel: [ 725.376872] 0000000000000000 ffffffffa0740758 ffffffff814eb7c7 ffff8810278cbd78 > Jun 13 15:33:55 srvl011a kernel: [ 725.376875] ffffffff81064cc7 ffff880fecbeac00 ffff880febfc0100 ffff880febfc0100 > Jun 13 15:33:55 srvl011a kernel: [ 725.376878] ffff880fecbeac00 0000000000000000 ffffffff81064db5 ffffffffa0740710 > Jun 13 15:33:55 srvl011a kernel: [ 725.376881] Call Trace: > Jun 13 15:33:55 srvl011a kernel: [ 725.376889] [<ffffffff814eb7c7>] ? dump_stack+0x41/0x51 > Jun 13 15:33:55 srvl011a kernel: [ 725.376894] [<ffffffff81064cc7>] ? warn_slowpath_common+0x87/0xc0 > Jun 13 15:33:55 srvl011a kernel: [ 725.376896] [<ffffffff81064db5>] ? warn_slowpath_fmt+0x45/0x50 > Jun 13 15:33:55 srvl011a kernel: [ 725.376902] [<ffffffffa073a652>] ? nfsd4_umh_cltrack_init+0x42/0x50 [nfsd] > Jun 13 15:33:55 srvl011a kernel: [ 725.376907] [<ffffffffa073b5b1>] ? nfsd4_client_tracking_init+0x91/0x130 [nfsd] > Jun 13 15:33:55 srvl011a kernel: [ 725.376914] [<ffffffffa073590d>] ? nfs4_state_start_net+0x27d/0x320 [nfsd] > Jun 13 15:33:55 srvl011a kernel: [ 725.376919] [<ffffffffa070fae3>] ? nfsd_svc+0x1b3/0x360 [nfsd] > Jun 13 15:33:55 srvl011a kernel: [ 725.376924] [<ffffffffa07108b0>] ? write_filehandle+0x230/0x230 [nfsd] > Jun 13 15:33:55 srvl011a kernel: [ 725.376927] [<ffffffff812a008b>] ? simple_strtoull+0x2b/0x50 > Jun 13 15:33:55 srvl011a kernel: [ 725.376932] [<ffffffffa07108b0>] ? write_filehandle+0x230/0x230 [nfsd] > Jun 13 15:33:55 srvl011a kernel: [ 725.376936] [<ffffffffa0710925>] ? write_threads+0x75/0xc0 [nfsd] > Jun 13 15:33:55 srvl011a kernel: [ 725.376941] [<ffffffff81131fa9>] ? __get_free_pages+0x9/0x50 > Jun 13 15:33:55 srvl011a kernel: [ 725.376946] [<ffffffff811bd061>] ? simple_transaction_get+0xc1/0xe0 > Jun 13 15:33:55 srvl011a kernel: [ 725.376951] [<ffffffffa07108b0>] ? write_filehandle+0x230/0x230 [nfsd] > Jun 13 15:33:55 srvl011a kernel: [ 725.376955] [<ffffffffa0710116>] ? nfsctl_transaction_write+0x56/0x80 [nfsd] > Jun 13 15:33:55 srvl011a kernel: [ 725.376959] [<ffffffff81198026>] ? vfs_write+0xc6/0x1f0 > Jun 13 15:33:55 srvl011a kernel: [ 725.376962] [<ffffffff8119851b>] ? SyS_write+0x4b/0xb0 > Jun 13 15:33:55 srvl011a kernel: [ 725.376965] [<ffffffff814f9779>] ? system_call_fastpath+0x16/0x1b > Jun 13 15:33:55 srvl011a kernel: [ 725.376967] ---[ end trace a408a046f76bfc25 ]--- > Jun 13 15:33:55 srvl011a kernel: [ 725.377001] ------------[ cut here ]------------ > > > I have found a thread on lkml about this (http://lkml.org/lkml/2013/3/1/78), > but it seems there was no conclusion. > > Is this something that could be supported? Yeah, we should really get that fixed. It can probably be worked around by reverting to the old reboot recovery method. --b. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
