 |
 |
Hi, So: to clarify. There is a patch for the glite3.2 1.8.2 DPM. I was hoping Matt would link to it for me ;), but it's here: https://svnweb.cern.ch/trac/lcgdm/blog/glite-release-1-8-2-5 When you upgrade to this, you need to also apply the mitigation I linked to in the earlier email. (Otherwise, your dpm and dpnsdaemons will repeatedly segfault whenever they try to fork new threads.) Sam On 30 August 2012 15:46, Alessandra Forti <[log in to unmask]> wrote: > PS which section of the scripts whould I use? At the beginning of only in > start? > > > On 30/08/2012 15:29, Sam Skipsey wrote: >> >> This is the globus threading issue (it applies to 1.8.3 and to the >> patch to 1.8.2 for glite3.2). >> >> https://svnweb.cern.ch/trac/lcgdm/ticket/505 >> >> Sam >> >> On 30 August 2012 15:23, Alessandra Forti <[log in to unmask]> >> wrote: >>> >>> Thanks for your help. I'll look at the db entries now. >>> >>> Which patch and globus thread in case this isn't sufficient? >>> >>> cheers >>> alessandra >>> >>> >>> >>> On 30/08/2012 15:15, Matt Doidge wrote: >>>> >>>> Heya, >>>>> >>>>> our DPM is segfaulting again and often with dpm and srmv2.2 crashing. >>>>> Dropping the request table and rebuilding the database hasn't had any >>>>> beneficial- at least not for long. I recall it might be a problem with >>>>> incomplete entries in the database and you had a SQL update from >>>>> Ricardo >>>>> to eliminate them. Is that correct? Could you let me know it, otherwise >>>>> I'll ask Ricardo. >>>> >>>> >>>> The original problem at Lancaster was that we had requests being put in >>>> for replicas that not only didn't exist, but were on disk pools that no >>>> longer exist. >>>> >>>> These were identified using: >>>> Making sure that "select * from dpm_fs;" only shows existing hosts). >>>> >>>> select poolname, host, fs, sfn from cns_db.Cns_file_replica where host >>>> not in (select distinct server from dpm_db.dpm_fs); >>>> >>>> (get requests) >>>> select from_surl, pfn from dpm_db.dpm_get_filereq where server not in >>>> (select distinct server from dpm_db.dpm_fs); >>>> >>>> (put requests) >>>> select to_surl, pfn from dpm_db.dpm_put_filereq where server not in >>>> (select distinct server from dpm_db.dpm_fs); >>>> >>>> (pending requests) >>>> select to_surl, pfn from dpm_db.dpm_pending_req where server not in >>>> (select distinct server from dpm_db.dpm_fs); >>>> >>>> >>>> We then got brutal and (after making sure we had backed it up) we >>>> removed >>>> all the entries that should be from the database. >>>> >>>> However the last time DPM had a segfaulting issue the only way to fix it >>>> was to install the glite 3.2 patch, which wasn't too hard (once we >>>> remembered the globus thread tweak), and we've been plain sailing since. >>>> >>>> Cheers, >>>> Matt >>>> >>>>> thanks >>>>> >>>>> cheers >>>>> alessandra >>>>> >>> >>> -- >>> Facts aren't facts if they come from the wrong people. (Paul Krugman) > > > > -- > Facts aren't facts if they come from the wrong people. (Paul Krugman) >