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Hello, It seems this can be done easily by modifying template file "admin/custom/etc/local.qserv.cnf" : next line : scratch_path=/dev/shm/qserv could be for example replaced by : scratch_path=/dev/shm/%(QSERV_BASE_DIR)s We tests this and told you about. The LPC team. On 03/28/2013 07:07 AM, Jacek Becla wrote: > So how about /dev/shm/qserv/<qservPort> or > /dev/shm/qserv/<qserv_install_dir>, or something > similar that is qserv-installation-specific to > avoid collisions? > > Jacek > > > On 03/27/2013 10:34 PM, Wang, Daniel Liwei wrote: >> I don't mind having it as a default installation rule, but performance >> suffers a lot if qserv isn't allowed to use /dev/shm (or other tmpfs) so >> a dev/ admin will want to patch it in production and any other >> conditions where speed matters. >> -Daniel >> >> >> >> -------- Original message -------- >> From: Jacek Becla <[log in to unmask]> >> Date: 03/27/2013 9:37 PM (GMT-08:00) >> To: qserv-l <[log in to unmask]> >> Subject: [QSERV-L] can we adopt a new rule? >> >> >> Hi >> >> Can we adopt a new rule: a qserv installation should >> never rely on directories outside of qserv install >> directory. I am talking about not relying on directories >> such as /dev, /tmp, /var, /log, etc... I know there >> was a lot of effort to move things off /tmp, /var, >> /log, but I noticed we still rely at least on /dev, >> e.g., our two "production" installations on lsst-db2 >> are both sharing: >> >> scratch_path = /dev/shm/qserv >> >> This is not always easy to spot, I happened to >> notice because /dev/shm/qserv is owned by Douglas >> and I can't write to it, so my qserv fails. >> >> I wonder if any bad things might happen if two >> installations share scratch_path... Douglas, >> you might want to fix that. >> >> Jacek >> >> ######################################################################## >> Use REPLY-ALL to reply to list >> >> To unsubscribe from the QSERV-L list, click the following link: >> https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=QSERV-L&A=1 > > ######################################################################## > Use REPLY-ALL to reply to list > > To unsubscribe from the QSERV-L list, click the following link: > https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=QSERV-L&A=1 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the QSERV-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=QSERV-L&A=1