OUTDATED: Policies concerning the /store/temp and /store/unmerged directories

The following table is outdated. All relevant policies should be taken from DMWMPG_Namespace twiki.

/store/unmerged and /store/temp are special directories which hold temporary files. They can be cleaned up automatically by the sites to free up disk space, but live within the Ops disk allocation at the sites. They should be T0D1 (disk only). The access permissions to the directories is listed below following the VOMS role setup defined here:CompOpsPoliciesVOMSRoles:

directory description roles with write permission accessible through srm (YES/NO) min file retention time
/store/unmerged legacy directory holding temporary files and logArchive tarballs t1production, production, hit1production, h1production NO (logCollect jobs archive logArchives to CERN, but srm access still would be nice) 2 weeks
/store/temp new main directory for temporary files NO ACCESS NO 2 weeks
/store/temp/prod new main directory for temporary production files t1production, production, hit1production, h1production NO 2 weeks
/store/temp/user new main directory for temporary user files every CMS VOMS proxy YES (asynchronous stageout) 1 week, sites can fail writing to area if it holds more than 20 TB

The srm accessibility should guarantee that what really needs access through srm is defined. Of course all other areas would benefit from SRM accessibility.

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Topic revision: r6 - 2016-11-28 - ChristophWissing
 
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