<div dir="ltr"><div><div><div><div><div><div><div><div><div><div>Totally strange. </div>I saw a blurb on a Ubuntu page where there was a kernel bug related to ext4 filesystem shared out by NFS. However, even though it showed the same error, it was still mountable from a remote machine. </div>I have a vanilla CentOS 6.4 with kernel 2.6.32-358 I tested the NFS server on with no issues. </div>/etc/exports: </div>/home *(rw,no_root_squash,async) </div>disables NFSv4 in /etc/sysconfig/nfs </div>turned off iptables for the test </div>actually have selinux in enforcing mode </div>mounted remotely with no issues or errors on starting nfs service. </div>At this point, I think there's a problem with the hard drive. The top level inode collections are screwed up and NFS can't "do it's thing" because it can't read the filesystem metadata. </div>I would run 'badblocks' on the drive and reinstall (lousy answer and bad sysadmin solution but short of running strace on everything it may be the fastest way to working) with a fresh drive format. </div> <div class="gmail_extra"> <div class="gmail_quote">On Thu, May 2, 2013 at 12:39 AM, Kenneth Lundström <<a href="mailto:kenneth.lundstrom@nudata.fi" target="_blank">kenneth.lundstrom@nudata.fi</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi, I also tried to mount /opt/ltsp shared on the new server on the old server, just to test the share, so doing mount -t nfs 192.168.0.1:/opt/ltsp /mnt/test/ I get these four rows of text in the new servers /var/log/messages: May 2 07:37:00 ltsp rpc.mountd[2186]: authenticated mount request from <a href="http://192.168.0.11:978" target="_blank">192.168.0.11:978</a> for /opt/ltsp (/opt/ltsp) May 2 07:37:00 ltsp rpc.mountd[2186]: qword_eol: fflush failed: errno 22 (Invalid argument) May 2 07:37:00 ltsp rpc.mountd[2186]: qword_eol: fflush failed: errno 2 (No such file or directory) May 2 07:37:00 ltsp rpc.mountd[2186]: Cannot export /opt/ltsp, possibly unsupported filesystem or fsid= required<div class="im"> > check contents of /etc/auto.misc for /opt/ltsp. Comment it out if found </div> don't have any files called /etc/auto.misc > lsmod | grep nfs nfsd 304962 11 lockd 73534 1 nfsd nfs_acl 2647 1 nfsd auth_rpcgss 44917 1 nfsd exportfs 4236 1 nfsd sunrpc 261299 17 nfsd,lockd,nfs_acl,auth_rpcgss Looks to me OK? > grep -R ltsp /etc/* Binary file /etc/aliases.db matches /etc/cron.daily/ltsp-swapfile-delete:[ -f /etc/ltsp/ltsp.conf ] && . /etc/ltsp/ltsp.conf /etc/cron.daily/ltsp-swapfile-delete:[ "$LTSP_SWAP_DIR" ] || LTSP_SWAP_DIR=/var/lib/ltsp/swapfiles/ /etc/exports:/opt/ltsp *(ro,async,no_root_squash) /etc/exports~:/opt/ltsp *(ro,async,no_root_squash) /etc/fstab:/dev/mapper/vg_ltsp-lv_root / ext4 defaults 1 1 /etc/fstab:/dev/mapper/vg_ltsp-lv_home /home ext4 defaults 1 2 /etc/fstab:/dev/mapper/vg_ltsp-lv_swap swap swap defaults 0 0 /etc/grub.conf:# kernel /vmlinuz-version ro root=/dev/mapper/vg_ltsp-lv_root /etc/grub.conf: kernel /vmlinuz-2.6.32-358.2.1.el6.x86_64 ro root=/dev/mapper/vg_ltsp-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_LVM_LV=vg_ltsp/lv_root rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBOA RDTYPE=pc KEYTABLE=fi rd_LVM_LV=vg_ltsp/lv_swap rd_NO_DM rhgb quiet /etc/grub.conf: kernel /vmlinuz-2.6.32-279.22.1.el6.x86_64 ro root=/dev/mapper/vg_ltsp-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_LVM_LV=vg_ltsp/lv_root rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBO ARDTYPE=pc KEYTABLE=fi rd_LVM_LV=vg_ltsp/lv_swap rd_NO_DM rhgb quiet /etc/grub.conf: kernel /vmlinuz-2.6.32-279.el6.x86_64 ro root=/dev/mapper/vg_ltsp-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_LVM_LV=vg_ltsp/lv_root rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBOARDTY PE=pc KEYTABLE=fi rd_LVM_LV=vg_ltsp/lv_swap rd_NO_DM rhgb quiet /etc/init.d/ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/init.d/ltsp-dhcpd:# config: /etc/ltsp/dhcpd.conf /etc/init.d/ltsp-dhcpd:lockfile=/var/lock/subsys/ltsp-dhcpd /etc/init.d/ltsp-dhcpd:pidfile=/var/run/ltsp-dhcpd.pid /etc/init.d/ltsp-dhcpd:[ -f /etc/sysconfig/ltsp-dhcpd ] && . /etc/sysconfig/ltsp-dhcpd /etc/init.d/ltsp-dhcpd: echo "/etc/ltsp/dhcpd.conf" /etc/init.d/ltsp-dhcpd: echo -n "Starting ltsp-$prog:" /etc/init.d/ltsp-dhcpd: if [ -e /etc/ltsp/DELETE-ME-WHEN-DONE-need-to-copy-sshkeys ]; then /etc/init.d/ltsp-dhcpd: /usr/sbin/ltsp-update-sshkeys /etc/init.d/ltsp-dhcpd: rm -f /etc/ltsp/DELETE-ME-WHEN-DONE-need-to-copy-sshkeys /etc/init.d/ltsp-dhcpd: echo -n "Shutting down ltsp-$prog:" /etc/ltsp/kickstart/Fedora/14/ltsp-i386.ks:# we are going to install into a chroot, such as /opt/ltsp/i386 /etc/ltsp/kickstart/Fedora/14/ltsp-x86_64.ks:# we are going to install into a chroot, such as /opt/ltsp/x86_64 /etc/ltsp/kickstart/Fedora/el6/ltsp-i386.ks:# we are going to install into a chroot, such as /opt/ltsp/i386 /etc/ltsp/kickstart/Fedora/el6/ltsp-x86_64.ks:# we are going to install into a chroot, such as /opt/ltsp/x86_64 /etc/ltsp/kickstart/Fedora/11/ltsp-i386.ks:# we are going to install into a chroot, such as /opt/ltsp/i386 /etc/ltsp/kickstart/Fedora/common/common.ks:ltsp-client /etc/ltsp/kickstart/Fedora/common/common.ks:ltspfsd /etc/ltsp/kickstart/Fedora/common/common.ks: /usr/sbin/ltsp-rewrap-latest-kernel /etc/ltsp/ltsp-build-client.conf:# By default ltsp-build-client will install a chroot matching your OS into /opt/ltsp/i386. /etc/ltsp/ltsp-build-client.conf:# See /usr/share/ltsp/plugins/ltsp-build-client for more possible options. /etc/ltsp/dhcpd.conf:option domain-name "ltsp"; /etc/ltsp/dhcpd.conf: filename "/ltsp/i386/elf.ltsp"; /etc/ltsp/dhcpd.conf: filename "/ltsp/i386/wraplinux-nbi.ltsp"; /etc/ltsp/dhcpd.conf: # NOTE: kernels are specified in /tftpboot/ltsp/i386/pxelinux.cfg/ /etc/ltsp/dhcpd.conf: filename "/ltsp/i386/pxelinux.0"; /etc/ltsp/dhcpd.conf: filename "/ltsp/i386/wraplinux-nbi.ltsp"; /etc/ltsp/dhcpd.conf: option root-path "172.31.100.254:/opt/ltsp/ppc"; /etc/ltsp/dhcpd.conf: option root-path "172.31.100.254:/opt/ltsp/i386"; /etc/ltsp/dhcpd.conf:# filename "/ltsp/vmlinuz.ltsp"; /etc/ltsp/dhcpd.conf:# filename "/ltsp/vmlinuz.ltsp"; /etc/ltsp/dhcpd.conf:# # kernels are specified in /tftpboot/ltsp/i386/pxelinux.cfg/ /etc/ltsp/dhcpd.conf:# filename "/ltsp/i386/pxelinux.0"; /etc/ltsp/dhcpd.conf:# option root-path "172.31.100.254:/opt/ltsp/ppc"; /etc/ltsp/dracut/sysconfig-mkinitrd:rootdev="192.168.0.254:/opt/ltsp/i386" /etc/ltsp/dracut/sysconfig-dracut-skip-first-time:# This file is deleted by chroot-creator kickstart prior to ltsp-rewrap-latest-kernel /etc/ltsp/dracut/sysconfig-network:HOSTNAME=ltspclient /etc/ltsp/dracut/ltsp-postinst.d:[ ! -e /etc/ltsp_chroot ] && exit 0 /etc/ltsp/dracut/ltsp-postinst.d: ln -sf elf-$1.img /boot/elf.ltsp /etc/ltsp/dracut/ltsp-postinst.d: ln -sf wraplinux-nbi-$1.img /boot/wraplinux-nbi.ltsp /etc/ltsp/dracut/ltsp-postinst.d:# Symlink vmlinuz.ltsp and initrd.ltsp and set permissions for tftp server /etc/ltsp/dracut/ltsp-postinst.d:ln -sf vmlinuz-$1 /boot/vmlinuz.ltsp /etc/ltsp/dracut/ltsp-postinst.d:ln -sf $INITRD /boot/initrd.ltsp /etc/ltsp/nbdswapd.conf:SWAPDIR=/var/lib/ltsp/swapfiles /etc/lvm/archive/vg_ltsp_00000-998910363.vg:creation_host = "<a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a>" # Linux <a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a> 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64 /etc/lvm/archive/vg_ltsp_00000-998910363.vg:vg_ltsp { /etc/lvm/archive/<a href="http://vg_ltsp_00000-998910363.vg" target="_blank">vg_ltsp_00000-998910363.vg</a>: creation_host = "<a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a>" /etc/lvm/archive/<a href="http://vg_ltsp_00000-998910363.vg" target="_blank">vg_ltsp_00000-998910363.vg</a>: creation_host = "<a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a>" /etc/lvm/archive/<a href="http://vg_ltsp_00000-998910363.vg" target="_blank">vg_ltsp_00000-998910363.vg</a>: creation_host = "<a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a>" /etc/lvm/backup/vg_ltsp:creation_host = "<a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a>" # Linux <a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a> 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64 /etc/lvm/backup/vg_ltsp:vg_ltsp { /etc/lvm/backup/vg_ltsp: creation_host = "<a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a>" /etc/lvm/backup/vg_ltsp: creation_host = "<a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a>" /etc/lvm/backup/vg_ltsp: creation_host = "<a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a>" /etc/mtab:/dev/mapper/vg_ltsp-lv_root / ext4 rw 0 0 /etc/mtab:/dev/mapper/vg_ltsp-lv_home /home ext4 rw 0 0 /etc/<a href="mailto:printcap%3AMustavalkoinen_uusi@172.31.100.254" target="_blank">printcap:Mustavalkoinen_uusi@172.31.100.254</a>|Mustavalkoinen_uusi:rm=ltsp.MYSERVER.com:rp=<a href="mailto:Mustavalkoinen_uusi@172.31.100.254" target="_blank">Mustavalkoinen_uusi@172.31.100.254</a>: /etc/printcap:CLP-510|Samsung CLP-510:rm=ltsp.MYSERVER.com:rp=CLP-510: /etc/<a href="mailto:printcap%3ACLP-510@172.31.100.254" target="_blank">printcap:CLP-510@172.31.100.254</a>|Samsung CLP-510:rm=ltsp.MYSERVER.com:rp=<a href="mailto:CLP-510@172.31.100.254" target="_blank">CLP-510@172.31.100.254</a>: /etc/<a href="mailto:printcap%3ACLP-510@192.168.0.11" target="_blank">printcap:CLP-510@192.168.0.11</a>|Samsung CLP-510:rm=ltsp.MYSERVER.com:rp=<a href="mailto:CLP-510@192.168.0.11" target="_blank">CLP-510@192.168.0.11</a>: /etc/printcap:Colorlaser|Colorlaser:rm=ltsp.MYSERVER.com:rp=Colorlaser: /etc/<a href="mailto:printcap%3AColorlaser@172.31.100.254" target="_blank">printcap:Colorlaser@172.31.100.254</a>|Colorlaser:rm=ltsp.MYSERVER.com:rp=<a href="mailto:Colorlaser@172.31.100.254" target="_blank">Colorlaser@172.31.100.254</a>: /etc/<a href="mailto:printcap%3AColorlaser@192.168.0.11" target="_blank">printcap:Colorlaser@192.168.0.11</a>|Colorlaser:rm=ltsp.MYSERVER.com:rp=<a href="mailto:Colorlaser@192.168.0.11" target="_blank">Colorlaser@192.168.0.11</a>: /etc/printcap:Mustavalkoinen_uusi|Mustavalkoinen_uusi:rm=ltsp.MYSERVER.com:rp=Mustavalkoinen_uusi: /etc/<a href="mailto:printcap%3AMustavalkoinen_uusi@192.168.0.11" target="_blank">printcap:Mustavalkoinen_uusi@192.168.0.11</a>|Mustavalkoinen_uusi:rm=ltsp.MYSERVER.com:rp=<a href="mailto:Mustavalkoinen_uusi@192.168.0.11" target="_blank">Mustavalkoinen_uusi@192.168.0.11</a>: /etc/printcap:NewColorLaser|NewColorLaser:rm=ltsp.MYSERVER.com:rp=NewColorLaser: /etc/<a href="mailto:printcap%3ANewColorLaser@172.31.100.254" target="_blank">printcap:NewColorLaser@172.31.100.254</a>|NewColorLaser:rm=ltsp.MYSERVER.com:rp=<a href="mailto:NewColorLaser@172.31.100.254" target="_blank">NewColorLaser@172.31.100.254</a>: /etc/<a href="mailto:printcap%3ANewColorLaser@192.168.0.11" target="_blank">printcap:NewColorLaser@192.168.0.11</a>|NewColorLaser:rm=ltsp.MYSERVER.com:rp=<a href="mailto:NewColorLaser@192.168.0.11" target="_blank">NewColorLaser@192.168.0.11</a>: /etc/rc0.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc0.d/K35ltsp-dhcpd:# config: /etc/ltsp/dhcpd.conf /etc/rc0.d/K35ltsp-dhcpd:lockfile=/var/lock/subsys/ltsp-dhcpd /etc/rc0.d/K35ltsp-dhcpd:pidfile=/var/run/ltsp-dhcpd.pid /etc/rc0.d/K35ltsp-dhcpd:[ -f /etc/sysconfig/ltsp-dhcpd ] && . /etc/sysconfig/ltsp-dhcpd /etc/rc0.d/K35ltsp-dhcpd: echo "/etc/ltsp/dhcpd.conf" /etc/rc0.d/K35ltsp-dhcpd: echo -n "Starting ltsp-$prog:" /etc/rc0.d/K35ltsp-dhcpd: if [ -e /etc/ltsp/DELETE-ME-WHEN-DONE-need-to-copy-sshkeys ]; then /etc/rc0.d/K35ltsp-dhcpd: /usr/sbin/ltsp-update-sshkeys /etc/rc0.d/K35ltsp-dhcpd: rm -f /etc/ltsp/DELETE-ME-WHEN-DONE-need-to-copy-sshkeys /etc/rc0.d/K35ltsp-dhcpd: echo -n "Shutting down ltsp-$prog:" Then we get the same over and over again. I left most of the repeating lines away. /etc/rc1.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc2.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc3.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc4.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc5.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc6.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc.d/rc1.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc.d/rc3.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc.d/rc6.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc.d/rc4.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc.d/rc2.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc.d/rc5.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc.d/init.d/ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc.d/rc0.d/K35ltsp-dhcpd:# Provides: ltsp-dhcpd /etc/rc.d/rc0.d/K35ltsp-dhcpd:# config: /etc/ltsp/dhcpd.conf /etc/rc.d/rc0.d/K35ltsp-dhcpd:lockfile=/var/lock/subsys/ltsp-dhcpd /etc/rc.d/rc0.d/K35ltsp-dhcpd:pidfile=/var/run/ltsp-dhcpd.pid /etc/rc.d/rc0.d/K35ltsp-dhcpd:[ -f /etc/sysconfig/ltsp-dhcpd ] && . /etc/sysconfig/ltsp-dhcpd /etc/rc.d/rc0.d/K35ltsp-dhcpd: echo "/etc/ltsp/dhcpd.conf" /etc/rc.d/rc0.d/K35ltsp-dhcpd: echo -n "Starting ltsp-$prog:" /etc/rc.d/rc0.d/K35ltsp-dhcpd: if [ -e /etc/ltsp/DELETE-ME-WHEN-DONE-need-to-copy-sshkeys ]; then /etc/rc.d/rc0.d/K35ltsp-dhcpd: /usr/sbin/ltsp-update-sshkeys /etc/rc.d/rc0.d/K35ltsp-dhcpd: rm -f /etc/ltsp/DELETE-ME-WHEN-DONE-need-to-copy-sshkeys /etc/rc.d/rc0.d/K35ltsp-dhcpd: echo -n "Shutting down ltsp-$prog:" /etc/sysconfig/network-scripts/ifcfg-ltspbr0:# Put this into /etc/sysconfig/network-scripts/ifcfg-ltspbr0 /etc/sysconfig/network-scripts/ifcfg-ltspbr0:# Warning: Deleting ifcfg-ltspbr0 alone to disable ltspbr0 will cause you /etc/sysconfig/network-scripts/ifcfg-ltspbr0:# ltsp-server package. /etc/sysconfig/network-scripts/ifcfg-ltspbr0:# Comment out these two lines to disable ltspbr0. /etc/sysconfig/network-scripts/ifcfg-ltspbr0:DEVICE=ltspbr0 /etc/sysconfig/network-scripts/ifcfg-eth0:BRIDGE="ltspbr0" Binary file /etc/sysconfig/network-scripts/k12linux-release-5.2.17-1.el6.x86_64 matches /etc/sysconfig/network-scripts/ifcfg-ltspbr0~:# Put this into /etc/sysconfig/network-scripts/ifcfg-ltspbr0 /etc/sysconfig/network-scripts/ifcfg-ltspbr0~:# Warning: Deleting ifcfg-ltspbr0 alone to disable ltspbr0 will cause you /etc/sysconfig/network-scripts/ifcfg-ltspbr0~:# ltsp-server package. /etc/sysconfig/network-scripts/ifcfg-ltspbr0~:# Comment out these two lines to disable ltspbr0. /etc/sysconfig/network-scripts/ifcfg-ltspbr0~:DEVICE=ltspbr0 /etc/sysconfig/network-scripts/ifcfg-ltspbr0.rpmsave:# Put this into /etc/sysconfig/network-scripts/ifcfg-ltspbr0 /etc/sysconfig/network-scripts/ifcfg-ltspbr0.rpmsave:# Warning: Deleting ifcfg-ltspbr0 alone to disable ltspbr0 will cause you /etc/sysconfig/network-scripts/ifcfg-ltspbr0.rpmsave:# ltsp-server package. /etc/sysconfig/network-scripts/ifcfg-ltspbr0.rpmsave:# Comment out these two lines to disable ltspbr0. /etc/sysconfig/network-scripts/ifcfg-ltspbr0.rpmsave:DEVICE=ltspbr0 /etc/sysconfig/network-scripts/ifcfg-eth0~:BRIDGE="ltspbr0" /etc/sysconfig/network:HOSTNAME=<a href="http://ltsp.MYSERVER.com" target="_blank">ltsp.MYSERVER.com</a> /etc/xinetd.d/nbdrootd: server_args = /opt/ltsp/images/i386.img /etc/xinetd.d/nbdrootd.rpmsave: server_args = /opt/ltsp/images/i386.img Looking at these lines I can't see any problems. Kenneth <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im"> and see where ltsp is referenced. Also do a </div><div class="im"> and make sure the you get something like: nfsd 274672 13 auth_rpcgss 48594 1 nfsd nfs_acl 12741 1 nfsd lockd 93540 1 nfsd sunrpc 256499 29 nfsd,auth_rpcgss,lockd,nfs_acl If no nfsd, then BINGO! Just run modprobe nfsd and service nfsd restart </div></blockquote><div class="HOEnZb"><div class="h5"> _______________________________________________ K12OSN mailing list <a href="mailto:K12OSN@redhat.com" target="_blank">K12OSN@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/k12osn" target="_blank">https://www.redhat.com/mailman/listinfo/k12osn</a> For more info see <<a href="http://www.k12os.org" target="_blank">http://www.k12os.org</a>> </div></div></blockquote></div> -- -- James P. Kinney III Every time you stop a school, you will have to build a jail. What you gain at one end you lose at the other. It's like feeding a dog on his own tail. It won't fatten the dog. - Speech 11/23/1900 Mark Twain <a href="http://electjimkinney.org" target="_blank">http://electjimkinney.org</a> <a href="http://heretothereideas.blogspot.com/" target="_blank">http://heretothereideas.blogspot.com/</a> </div>