Planned group space downtime

The disk array ifevo3 has a fault with its flash memory. Though it may be just about possible to replace the faulty memory without disrupting the file service, the recommendation is to shut down the the disk array to do the work. So this is what we plan on doing.

The data on ifevo3 is nearly all group space, plus some of our system/backup data. While ifevo3 is down, the group space listed below will be unavailable.

To do this work without affecting other files and home directories served by the same server, we need to unmount the affected partitions from the servers. This will mean a brief interruption to all files served by the those servers, once before the work starts, and once again after it is complete. These brief breaks should last no longer than 2 minutes, you may not even notice them at all.

We are planning to do the work on Tuesday 26th of May, between 9am and 10am. Please let us know now if this is going to cause you real problems.

The list of group areas that will be unavailable during the work is:

/group/admin/repadmin
/group/corpora/public
/group/infdb/infreports
/group/infdb/infthesis
/group/infdb/ug4projects
/group/project/dcspaul-diy
/group/support/projects
/group/teaching/cvscs1
/afs/inf.ed.ac.uk/group/admin/DOPShandover
/afs/inf.ed.ac.uk/group/appguarden2
/afs/inf.ed.ac.uk/group/bundy
/afs/inf.ed.ac.uk/group/corpora/restricted/sky_news
/afs/inf.ed.ac.uk/group/cstr/projects/corpus_1
/afs/inf.ed.ac.uk/group/cstr/projects/Felipe_Espic
/afs/inf.ed.ac.uk/group/cstr/projects/galatea/d03
/afs/inf.ed.ac.uk/group/cstr/projects/galatea/d04
/afs/inf.ed.ac.uk/group/cstr/projects/merritt_synthesis
/afs/inf.ed.ac.uk/group/cstr/projects/merritt_synthesis2
/afs/inf.ed.ac.uk/group/cup/data1
/afs/inf.ed.ac.uk/group/ESSENCEadmin
/afs/inf.ed.ac.uk/group/ICSA/beaches
/afs/inf.ed.ac.uk/group/msc-projects/s1355318
/afs/inf.ed.ac.uk/group/msc-projects/s1355708
/afs/inf.ed.ac.uk/group/pasta-private
/afs/inf.ed.ac.uk/group/project/ami5
/afs/inf.ed.ac.uk/group/project/arc_tools
/afs/inf.ed.ac.uk/group/project/biomedTM
/afs/inf.ed.ac.uk/group/project/common_sense
/afs/inf.ed.ac.uk/group/project/deca
/afs/inf.ed.ac.uk/group/project/dnn_tts
/afs/inf.ed.ac.uk/group/project/gpgpu
/afs/inf.ed.ac.uk/group/project/idea
/afs/inf.ed.ac.uk/group/project/img2txt
/afs/inf.ed.ac.uk/group/project/mast
/afs/inf.ed.ac.uk/group/project/mast/mast2
/afs/inf.ed.ac.uk/group/project/nst/bbcdata/ptn4
/afs/inf.ed.ac.uk/group/project/nst/bbcdata/ptn5
/afs/inf.ed.ac.uk/group/project/nst/bbcdata/ptn6
/afs/inf.ed.ac.uk/group/project/nst/bbcdata/ptn7
/afs/inf.ed.ac.uk/group/project/nst/bbcdata/ptn8
/afs/inf.ed.ac.uk/group/project/nst/bbcdata/raw
/afs/inf.ed.ac.uk/group/project/reellives
/afs/inf.ed.ac.uk/group/project/slmc
/afs/inf.ed.ac.uk/group/project/UKConnect
/afs/inf.ed.ac.uk/group/statgen
/afs/inf.ed.ac.uk/group/synproc
/afs/inf.ed.ac.uk/group/teaching/matlab-help
/afs/inf.ed.ac.uk/group/ug4-projects/s1040800
/afs/inf.ed.ac.uk/group/workshop/datascience
/afs/inf.ed.ac.uk/group/workshop/ml

Remember that any web space served from these areas will also be unavailable.

And for our own record, these are the actual mount points:

kraken:/vicepv /vicepw
huldra:/vicepd /vicepe /vicepf /vicepg /viceph /vicepi /vicepj /vicepk /vicepl /vicepm /vicept /vicepu
nessie:/vicept /vicepu /disk/rmirror20 /disk/rmirror21
lammasu:/vicepa /disk/ptn175 /disk/ptn176 /disk/ptn197 /disk/ptn198
yeti:/vicepu /vicepv
telford:/disk/data /disk/data2

Thanks for your understanding,

Neil

About neilb

Computing staff at the University of Edinburgh. Part of the Services Unit.
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One Response to Planned group space downtime

  1. neilb says:

    This work overran by about 10mins, but otherwise seems to have been a success.

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