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Richard Fish, mused, then expounded: |
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> |
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> Also, I didn't mean to deride xfs or xfs_fsr/fsr_xfs, so please don't |
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> take it personally. |
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|
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It's just a problem with perception. Say "defragger" and everyone thinks |
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that Norton Utilites' disk utils have been cloned for Linux. I didn't |
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take it personally, but didn't want others to assume that space compaction |
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would be part of xfs_fsr. |
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|
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|
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> It is the *only* filesystem that offers a online |
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> defrag tool for linux today, and that is a big bonus. My complaint is |
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> more of a wish list than anything else. But it isn't a big enough |
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> wish for me to spend time working on it myself! |
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> |
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Well, it does also offer a fairly painless partition copy/restore, which actually |
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works very well, if there is an extra drive around. |
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|
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> |
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> But actually, it is with the handling of multi-gigabyte files that I |
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> find it lacking. My VMWare virtual disk images are 10-20G. So if I |
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> don't have at least 20G of free space on a filesystem, I cannot |
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> defragment those. Moreover, since xfs_fsr doesn't consolidate free |
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> space, it is probable that no improvements could be made to those |
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> files even if I have 50G free, since there are likely to be some files |
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> spread out over the disk if the filesystem has been in use for any |
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> length of time. |
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> |
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True enough. Though the original customers that xfs_fsr was written for |
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were running multi-terabyte arrays where a 20 GB file was a small single |
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texture. Even those running HDTV editing on a 1P box were working with |
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300 GB of video (15 minutes). Thus they typically had the need for |
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3x the space during editing, but had plenty of free space for defragging |
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the file. Thus the target audience were those with attached raid/jbod |
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arrays. |
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|
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But again, I was just attempting to clarify vs. being offended. Apologies |
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if it came across that way. |
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|
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Bob |
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- |
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-- |
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