From: "Alexander Povolotsky" Subject: I have two Linux ( 2.6.8 ?) NFS client/server problems Date: Mon, 11 Oct 2004 21:19:18 GMT Sender: nfs-admin@lists.sourceforge.net Message-ID: <20041011.141946.8277.9770@webmail11.lax.untd.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list2.sourceforge.net with esmtp (Exim 4.30) id 1CH7bS-0005y0-DT for nfs@lists.sourceforge.net; Mon, 11 Oct 2004 14:21:10 -0700 Received: from outbound-mail.lax.untd.com ([64.136.28.164]) by sc8-sf-mx2.sourceforge.net with smtp (Exim 4.41) id 1CH7b3-0007KZ-1f for nfs@lists.sourceforge.net; Mon, 11 Oct 2004 14:21:10 -0700 Received: from outbound29-sr.lax.untd.com (webmail11.lax.untd.com [10.130.30.151]) by smtpout04.lax.untd.com with SMTP id AABAYX8JXATGYW32 for (sender ); Mon, 11 Oct 2004 14:20:21 -0700 (PDT) To: nfs@lists.sourceforge.net Errors-To: nfs-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Post: List-Help: List-Subscribe: , List-Archive: Hi, I have two Linux NFS problems disclosed here. Problem # 1 "pivot_root" failure issue (is probably less important vs Problem # 2 - see below, but the info for the # 1 is also needed for # 2) : Please note that PQ2FADS-VR is an embedded diskless board, booted with (old) ramdisk (from W. Denk) with BusyBox v0.60.1and then manually mounting (specifying NFS version 2 as it was suggested by you in 1) ) onto NFS file system (from where lmbench is executed), provided on the Linux "file server" PC running Linux Red Hat 9 Shrike. During the "manual"mount with specifying NFS version 2, several warnings are thrown ... but after a while the mount gets complete ... A) ************************ tftpboot 200000 uimage ... bootm 200000 FF800000 ... RAMDISK: Compressed image found at block 0 VFS: Mounted root (ext2 filesystem). Freeing unused kernel memory: 272k init serial console detected. Disabling virtual terminals. ### Application running ... BusyBox v0.60.1 (2002.10.24-02:29+0000) Built-in shell (msh) Enter 'help' for a list of built-in commands. #mkdir /fadsroot # ls -l / drwxr-xr-x 2 0 0 2048 Jan 1 01:29 bin drwxr-xr-x 2 0 0 3072 Jan 1 00:00 dev drwxr-xr-x 5 0 0 1024 Jan 1 00:00 etc drwxrwxrwx 38 0 0 4096 Oct 7 2004 fadsroot drwxr-xr-x 2 0 0 1024 Jan 1 00:00 ftp drwxr-xr-x 2 0 0 1024 Jan 1 00:00 home drwxr-xr-x 3 0 0 1024 Jan 1 01:29 lib dr-xr-xr-x 25 0 0 0 Jan 1 00:00 proc drwxr-xr-x 2 0 0 1024 Jan 1 00:00 sbin drwxr-xr-x 2 0 0 1024 Jan 1 00:00 tmp drwxr-xr-x 4 0 0 1024 Jan 1 00:00 usr drwxr-xr-x 4 0 0 1024 Jan 1 00:00 var # portmap portmap: not found # ifconfig eth0 Link encap:Ethernet HWaddr 08:00:17:40:00:03 inet addr:192.168.0.5 Bcast:192.168.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:19 errors:0 dropped:0 overruns:0 frame:0 TX packets:15 errors:0 dropped:0 overruns:0 carrier:15 collisions:0 txqueuelen:1000 RX bytes:2056 (2.0 kb) TX bytes:1488 (1.4 kb) Base address:0x8500 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) # mount rootfs on / type rootfs (rw) /dev/ram0 on / type ext2 (rw) /proc on /proc type proc (rw,nodiratime) #mount -o mountvers=2 192.168.0.3:/fadsroot /fadsroot fs warning: mount version older than kernel portmap: server localhost not responding, timed out RPC: failed to contact portmap (errno -5). portmap: server localhost not responding, timed out RPC: failed to contact portmap (errno -5). lockd_up: makesock failed, error=-5 portmap: server localhost not responding, timed out RPC: failed to contact portmap (errno -5). # # mount rootfs on / type rootfs (rw) /dev/ram0 on / type ext2 (rw) /proc on /proc type proc (rw,nodiratime) 192.168.0.3:/fadsroot on /fadsroot type nfs (rw,v2,rsize=8192,wsize=8192,hard,ud p,lock,addr=192.168.0.3) # ps PID Uid Stat Command 1 root S init 2 root R [ksoftirqd/0] 3 root S [events/0] 4 root S [khelper] 5 root S [kblockd/0] 6 root S [pdflush] 7 root S [pdflush] 8 root S [kswapd0] 9 root S [aio/0] 15 root S /usr/sbin/xinetd -stayalive -reuse -pidfile /tmp/xinetd.pid 138 root S [rpciod] 253 root S -sh 254 root S /bin/sh /bin/application 256 root S sleep 300 258 root R ps # ifconfig eth0 Link encap:Ethernet HWaddr 08:00:17:40:00:03 inet addr:192.168.0.5 Bcast:192.168.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:122 errors:0 dropped:0 overruns:0 frame:0 TX packets:114 errors:0 dropped:0 overruns:0 carrier:114 collisions:0 txqueuelen:1000 RX bytes:20747 (20.2 kb) TX bytes:14320 (13.9 kb) Base address:0x8500 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) # cd /fadsroot #sbin/pivot_root /fadsroot /tmp pivot_root: pivot_root: Device or resource busy Note that using additionally -o noolock option while doung mount allows to get rid of warnings during mounting but does fix the pivot_root failure. ************************************************************* I am not an expert on Red Hat 9 Linux either(though I "manage" that machine ;-)), but on that machine portmap is running there and /fadsroot is exported for NFS mounting also: B) ************************************************** [root@localhost root]# uname -a Linux localhost.localdomain 2.4.20-28.9 #1 Thu Dec 18 13:45:22 EST 2003 i686 i686 i386 GNU/Linux [root@localhost root]# rpm -qa | grep portmap portmap-4.0-54 [root@localhost root]# rpm -qa | grep nfs nfs-utils-1.0.1-3.9 redhat-config-nfs-1.0.4-5 [root@localhost root]# rpcinfo -p localhost program vers proto port 100000 2 tcp 111 portmapper 100000 2 udp 111 portmapper 100024 1 udp 1024 status 100024 1 tcp 1024 status 391002 2 tcp 1025 sgi_fam 100011 1 udp 999 rquotad 100011 2 udp 999 rquotad 100011 1 tcp 1002 rquotad 100011 2 tcp 1002 rquotad 100003 2 udp 2049 nfs 100003 3 udp 2049 nfs 100021 1 udp 1026 nlockmgr 100021 3 udp 1026 nlockmgr 100021 4 udp 1026 nlockmgr 100005 1 udp 1027 mountd 100005 1 tcp 1026 mountd 100005 2 udp 1027 mountd 100005 2 tcp 1026 mountd 100005 3 udp 1027 mountd 100005 3 tcp 1026 mountd [root@localhost root]# cat /etc/exports /fadsroot *(rw,no_root_squash,async) [root@localhost root]# showmount -e Export list for localhost.localdomain: /fadsroot * *********************************************** Note from above in A) that I am also not able to "pivot_root" on my board onto that mounted file system thereafter (though on the board the portmap is not running ...I think .. and loopback is configured) - getting error: "pivot_root: Device or resource busy". I have limited tools on that board at that time to figure out what keeps old root busy (outdated libc.so library, provided with ramdisk, which I can not replace on the fly, prevents adding/running rpcinfo and lsof). Problem #2 I am also not able to boot "straight" (i.e., without ramdisk) - with NFS mounting the root file system onto the same (as described above) Linux "file server" PC running Linux Red Hat 9 Shrike (with the same settings as it is described above) - this does not work - I am getting kernel panic "Attempted to kill init!"- see below C) (That is why I am booting with ramdisk instead). This kernel panic is puzzling (given that with ramdisk I could boot now ). So perhaps the problem is again in the NFS version incompatibility ??? But this time it is not BusyBox from ramdisk ... but perhaps an attempt to run BusyBox from /fadsroot (it is there too, but more "current version" ) during the boot is failing in this case ? ... and the kernel on my board during booting does not "know", that it needs to use NFS version 2 during mounting ? Should the kernel be configured to allow to NFS mount root file system onto the NFS server with version 2 ? I do not see the kernel option to configure NFS version 2 ... Here is what I have: CONFIG_NFS_FS=y # CONFIG_NFS_V3 is not set # CONFIG_NFS_V4 is not set # CONFIG_NFS_DIRECTIO is not set # CONFIG_NFSD is not set CONFIG_ROOT_NFS=y CONFIG_LOCKD=y C) *************************************************************** => printenv bootdelay=5 bootcmd=bootm 200000 ethaddr=08:00:17:00:00:03 serverip=192.168.0.3 ipaddr=192.168.0.5 baudrate=9600 bootargs=root=/dev/nfs rw nfsroot=192.168.0.4:/fadsroot stdin=serial stdout=serial stderr=serial Environment size: 210/262140 bytes => tftpboot 200000 uimage Using FCC2 ETHERNET device TFTP from server 192.168.0.3; our IP address is 192.168.0.5 Filename 'uimage'. Load address: 0x200000 Loading: ################################################################# ################################################################# ####################################### done Bytes transferred = 864364 (d306c hex) => bootm 200000 ## Booting image at 00200000 ... Image Name: Linux-2.6.8-rc4 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 864300 Bytes = 844 kB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK Uncompressing Kernel Image ... OK Linux version 2.6.8-rc4 (apovolot@USPITLAD104868) (gcc version 3.3.2) #5 Mon Aug 16 08:49:38 EDT 2004 PQ2 ADS Port Built 1 zonelists Kernel command line: root=/dev/nfs rw nfsroot=192.168.0.4:/fadsroot nobats ip=19 2.168.0.5 PID hash table entries: 256 (order 8: 2048 bytes) Warning: real time clock seems stuck! Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) Memory: 30432k available (1348k kernel code, 324k data, 272k init, 0k highmem) Calibrating delay loop... 131.07 BogoMIPS Mount-cache hash table entries: 512 (order: 0, 4096 bytes) NET: Registered protocol family 16 PCI: Probing PCI hardware Generic RTC Driver v1.07 Serial: CPM driver $Revision: 0.01 $ ttyCPM0 at MMIO 0xf0011a00 (irq = 40) is a CPM UART RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize loop: loaded (max 8 devices) eth0: FCC ENET Version 0.3, 08:00:17:40:00:03 NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 2048 bind 4096) NET: Registered protocol family 1 NET: Registered protocol family 17 IP-Config: Guessing netmask 255.255.255.0 IP-Config: Complete: device=eth0, addr=192.168.0.5, mask=255.255.255.0, gw=255.255.255.255, host=192.168.0.5, domain=, nis-domain=(none), bootserver=255.255.255.255, rootserver=192.168.0.4, rootpath= Looking up port of RPC 100003/2 on 192.168.0.4 Looking up port of RPC 100005/1 on 192.168.0.4 VFS: Mounted root (nfs filesystem). Freeing unused kernel memory: 272k init Kernel panic: Attempted to kill init! <0>Rebooting in 180 seconds.. Any comment/opinion/solution/ ? Thanks, Best Regards, Your input/comments/advise is APPRECIATED in advance !, Alex ________________________________________________________________ Speed up your surfing with Juno SpeedBand. Now includes pop-up blocker! Only $14.95/ month - visit http://www.juno.com/surf to sign up today! ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs