Support #4792

Please create shared scratch area for WH14 teststand

Added by Kurt Biery over 7 years ago. Updated about 7 years ago.

Target version:
Start date:
Due date:
% Done:


Estimated time:
1.00 h
Duration: 18


Hi Lynn,
When you get a chance, please create a shared scratch area on the WH14 teststand cluster.

I recall that you created exactly such a nice environment on the DAQ and LNGS teststand clusters, and it would be great to have the same setup on the WH14 teststand cluster. (Maybe there was some issue at the WH14 cluster than I'm forgetting? If so, please remind me.)


#1 Updated by Lynn Garren over 7 years ago

  • Status changed from New to Closed

There is no disk available for this.

#2 Updated by Kurt Biery over 7 years ago

  • Status changed from Closed to Feedback

Hi Lynn,
As we discussed, it looks like you did some magic on dsfr5 and dsfr1 to get /scratch and /data to share the same disk.

On dsfr5 (LNGS teststand), it looks like /data is a symbolic link to /scratch/data.

On dsfr1, it's really cool magic. /data and /scratch are both on the /scratch disk, but I can't see any obvious way that it's done (no links...).

So, if possible, it would be great to something similar on dsfr6.
Thanks again,

#3 Updated by Lynn Garren over 7 years ago

It seems that /data is not shared. I'm sorry, but the only option would be to create /products/scratch, which is really dangerous.

#4 Updated by Lynn Garren over 7 years ago

  • Status changed from Feedback to Resolved
  • % Done changed from 0 to 100
  • Estimated time set to 1.00 h

A shared /scratch directory is now available on both dsfr6 and dseb8.

#5 Updated by Kurt Biery about 7 years ago

  • Assignee changed from Lynn Garren to Kurt Biery

I noticed that after a reboot of dseb8, the scratch area was not visible from dseb8. I was able to run a mount command by hand to get it remounted, but adding it to fstab and rebooting didn't seem to work. After talking with Ron a bit, I modified the export from dsfr6 to use /data/scratch.

Here is the current /etc/exports file on dsfr6:

/home dseb8(rw) ds50wsp(rw)
/products dseb8(rw)
/usr/local dseb8(rw,no_root_squash)
/data/scratch dseb8(rw)

Here is the current /etc/fstab file on dseb8:

  1. /etc/fstab
  2. Created by anaconda on Tue Jan 15 05:46:18 2013 #
  3. Accessible filesystems, by reference, are maintained under '/dev/disk'
  4. See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info #
    UUID=ddcdf0b5-d6be-48bd-82dc-b7ab3e9c890d / ext4 defaults 1 1
    UUID=daef16ac-f9de-43a3-a99d-8ba0a5c958a8 /data1 ext4 defaults 1 2
    UUID=42da86c8-02b1-4069-a5c7-cc09fa2bd5a9 /data2 ext4 defaults 1 2
    UUID=a5d41b01-7ebc-4109-bf00-2f5ffa9779c7 /local ext4 defaults 1 2
    UUID=7b229f17-1d67-436f-b652-f2dfa7da61ec swap swap defaults 0 0
    tmpfs /dev/shm tmpfs defaults 0 0
    devpts /dev/pts devpts gid=5,mode=620 0 0
    sysfs /sys sysfs defaults 0 0
    proc /proc proc defaults 0 0
    dsfr6:/home /home nfs4 defaults,hard,intr,timeo=600 0 0
    dsfr6:/products /products nfs4 defaults,hard,intr,timeo=600 0 0
    dsfr6:/usr/local /usr/local nfs4 defaults,hard,intr,timeo=600 0 0
    dsfr6:/data/scratch /scratch nfs4 defaults,hard,intr,timeo=600 0 0
    #ds50wsp:/home /home-ds50ws nfs4 defaults,hard,intr,timeo=600 0 0

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