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Entry  Mon Jun 9 11:42:00 2014, Jenne, Update, CDS, Computer status 
    Reply  Mon Jun 9 12:19:17 2014, ericq, Update, CDS, Computer status 
       Reply  Mon Jun 9 22:26:44 2014, rana, zach, Update, CDS, SLOW controls recovery 
          Reply  Wed Jun 11 14:36:57 2014, Jenne, Update, CDS, SLOW controls recovery 
             Reply  Wed Jun 11 15:57:18 2014, Jenne, Update, CDS, Note on cables for talking to slow computers 06111401.PDF
                Reply  Thu Jun 12 15:31:47 2014, Jamie, Update, CDS, Note on cables for talking to slow computers 
             Reply  Wed Jun 11 16:01:31 2014, Steve, Update, CDS, c1Vac1 and c1vac2 rebooted beforeReboot.png
                Reply  Fri Oct 10 14:27:44 2014, Steve, Update, CDS, c1Vac1 and c1vac2 reboot was a failure c1vac1resetReboot.pngc1Vac1&2down.jpg
       Reply  Wed Oct 8 15:31:31 2014, Jenne, Update, CDS, Computer status 
    Reply  Mon Jun 9 22:40:36 2014, Jenne, Update, CDS, Fast front end computers up 
    Reply  Tue Jun 10 09:25:29 2014, Jamie, Update, CDS, Computer status: should not be changing names 
Message ID: 10016     Entry time: Mon Jun 9 22:40:36 2014     In reply to: 10010
Author: Jenne 
Type: Update 
Category: CDS 
Subject: Fast front end computers up 

Rana and I now seem to have the fast front end computers (c1lsc, c1sus, c1ioo, c1iscex and c1iscey) up and running!  Hooray!

It seemed that we needed to change the soft links back to hard links for rtcds and rtapps on the front end machines.  On c1ioo, we did:

cd /opt

sudo rm -rf rtcds

sudo rm -rf rtapps

sudo mkdir rtcds

sudo mkdir rtapps

sudo chown controls:1001 rtcds

sudo chown controls:1001 rtapps

mount /opt/rtcds

mount /opt/rtapps

At this time, the front end fstab had several other options in addition to "nolock" for both rtcds and rtapps.  They had rw,bg,user,nolock.  This state still had some permissions problems.  (Later, we have decided that perhaps our next step was unneccesary, since it still left us with (fewer) permissions problems. Taking out the rw,bg,user options from the front end fstab seems to have fixed all permissions issues, so maybe this next chmod step didn't need to be done.  But it was done, so I record it for completeness).

On chiara, we did:

cd /home/cds/rtcds

sudo chmod -R 777 *

Then on c1iscex, I didn't have to deal with the soft links, but I did need to mount the rtcds and rtapps directories so that I could see files in them.  I just did the last 2 operations from the c1ioo list above (mount /opt/rtcds and mount /opt/rtapps). 

Since we were still seeing some (fewer) permissions problems, we took out the extra options in the front ends' fstab that Rana had added.  Rebooting c1iscex after this, everything came back as expected.  Nice!

I think that, at this point, remotely rebooting (sudo shutdown -r now) the other front ends made everything come back nicely. Since we had gotten the fstab situation correct, we didn't have to by-hand mount any directories, and all of the models restarted on their own.  Finally!

 

 


For posterity, here are things that we'll want to remember:

Frame builder's fstab, in /etc/fstab (only the uncommented lines, since there are lots of comments):

/dev/sdb1               /               ext3            noatime         0 1
/swapfile               none            swap            sw              0 0
shm                     /dev/shm        tmpfs           nodev,nosuid,noexec     0 0
/dev/sda1               /frames         ext3    noatime         0 0
192.168.113.104:/home/cds/                      /cvs/cds        nfs     _netdev,auto,rw,bg,soft      0 0
192.168.113.104:/home/cds/rtcds                  /opt/rtcds     nfs     _netdev,auto,rw,bg,soft 0 0
192.168.113.104:/home/cds/rtapps                 /opt/rtapps    nfs     _netdev,auto,rw,bg,soft 0 0

Fast front end fstabs, which are on the framebuilder in /diskless/root/etc/fstab:

master:/diskless/root                   /               nfs     sync,hard,intr,rw,nolock,rsize=8192,wsize=8192    0 0
master:/usr                             /usr            nfs     sync,hard,intr,ro,nolock,rsize=8192,wsize=8192    0 0
master:/home                            /home           nfs     sync,hard,intr,rw,nolock,rsize=8192,wsize=8192    0 0
none                                    /proc           proc    defaults          0 0
none                                    /var/log        tmpfs   size=100m,rw    0 0
none                                    /var/lib/init.d tmpfs   size=100m,rw    0 0
none                                    /dev/pts        devpts  rw,nosuid,noexec,relatime,gid=5,mode=620        0 0
none                                    /sys            sysfs   defaults        0 0
master:/opt                             /opt            nfs     async,hard,intr,rw,nolock  0 0
192.168.113.104:/home/cds/rtcds         /opt/rtcds      nfs     nolock                     0 0
192.168.113.104:/home/cds/rtapps        /opt/rtapps     nfs     nolock                     0 0

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