IBM System Storage Ideas Portal
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Due to processing by IBM, this request was reassigned to have the following updated attributes:
Brand - Servers and Systems Software
Product family - IBM Spectrum Scale
Product - Spectrum Scale (formerly known as GPFS) - Public RFEs
Component - Product functionality
For recording keeping, the previous attributes were:
Brand - Servers and Systems Software
Product family - IBM Spectrum Scale
Product - Spectrum Scale (formerly known as GPFS) - Public RFEs
Component - V4 Product functionality
You asked:
Is the RFE related to sparse files at all?
Also.
Is the request to understand how the data blocks are spread across the disks?
Yes, we would like to display about which disks a file is spread. E. g. file one is spread about disk1, disk2 and disk3 and file two is spread about disk3, disk4 and disk5.
It's not clear what preciselt this RFE is requesting, since "fragmentation" is term that may be interpreted in different ways. Say, mmdefragfs reduces fragments by moving around the fragments of files. But note that only the last block in a file may be fragmented. Large files, then, are not very impacted by fragmentation of that kind.
Is the RFE related to sparse files at all? Say, is there a request to determine whether a file is sparse? (that is, whether a file does not have real disk blocks across a range of file offsets)
Is the request to understand how the data blocks are spread across the disks? Files are normally spread across multiple disks and across multiple different locations in the disks.