Hello, the pool metadata high error reports issues with the free blocks in the metadataOnly and/or dataAndMetadata NSDs in the system pool.
mmlspool and subsequently the GPFSPool sensor is the source of the information that is used be the threshold that reports this error. So please compare with mmlspool and mmperfmon query gpfs_pool_disksize, gpfs_pool_free_fullkb -b 86400 -n 1 Once inodes are allocated I am not aware of a method to de-allocate them. This is what the Knowledge Center says: "Inodes are allocated when they are used. When a file is deleted, the inode is reused, but inodes are never deallocated. When setting the maximum number of inodes in a file system, there is the option to preallocate inodes. However, in most cases there is no need to preallocate inodes because, by default, inodes are allocated in sets as needed. If you do decide to preallocate inodes, be careful not to preallocate more inodes than will be used; otherwise, the allocated inodes will unnecessarily consume metadata space that cannot be reclaimed. " Mit freundlichen Grüßen / Kind regards Dr. Markus Rohwedder Spectrum Scale GUI Development Phone: +49 7034 6430190 IBM Deutschland Research & Development E-Mail: rohwed...@de.ibm.com Am Weiher 24 65451 Kelsterbach Germany From: KG <spectrumsc...@kiranghag.com> To: gpfsug main discussion list <gpfsug-discuss@spectrumscale.org> Date: 14.05.2018 12:57 Subject: [gpfsug-discuss] pool-metadata_high_error Sent by: gpfsug-discuss-boun...@spectrumscale.org Hi Folks IHAC who is reporting pool-metadata_high_error on GUI. The inode utilisation on filesystem is as below Used inodes - 92922895 free inodes - 1684812529 allocated - 1777735424 max inodes - 1911363520 the inode utilization on one fileset (it is only one being used) is below Used inodes - 93252664 allocated - 1776624128 max inodes 1876624064 is this because the difference in allocated and max inodes is very less? Customer tried reducing allocated inodes on fileset (between max and used inode) and GUI complains that it is out of range. _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
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