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Incomplete files are bigger than the whole torrent


Quantus347

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Posted

This one is weird. Im downloading two torrents that are each 30 gigs. I cleared most of the space Id need, with the intention of doing some dvd backup before they finished. This was last night, but this morning all my disk space was gone (I download to a secondary hard drive, so I avoided the system crash). After a bunch of investigation I discovered that while UT showed they had each downloaded 500ish megs, the disk space they were taking up was 20 gigs each. Thinking it had just screwed up a cache dump or something, I deleted the files and started over with my original torrent files. Its now a few hours later, and the 200 megs of torrent 1 are taking up 16.7 gigs, and the 98 megs of torrent 2 are taking up 9 gigs. Now ive been watching there progression, so I can say that its climbing at a steady rate, just far more than the actual data should take. Im not preallocating or anything, so Im stumped.

If it affects anything, I just updated to 1.7.7.

Posted

When ut first writes a file, the entire file has to be created and allocated. With sparse files, this requirement is reduced somewhat, but it will still have to use a lot more space than data you actually downloaded.

Posted

File/Folder Properties... Size and Size on Disk represent the total space allocated and the total space utilized on the disk. It doesn't sound like your disks are NTFS, and make sure diskio.sparse_files is TRUE. It is FALSE by default in 1.7

Posted

The Drive is indeed NTFS. I set diskio.sparse_files to True, deleted the previous downloaded files and restarted the torrents.

in the first few seconds the the partial files say:

size: 700 mb

size on disk 2.62 mb

and

Size: 350 MB

Size on disk: 128 kb

This isn't a matter of allocating the files and backfilling them (besides I have that feature turned off) because when it about 1% of the torrent it bombs out saying the drive is full. I could understand it taking a bit more space while active, but so far Ive seen it taking anywhere from 200 to 14,000 times the space of the actual data. And it is incapable of finishing a torrent. Is it possible to roll back my version to before I updated?

Im still stumped

Posted

... if you set sparse files and the files are registering (xxx on disk) where xxx is what's been verified good data in uT, the space usage is elsewhere. What do you mean you can't finish a torrent? Does it get stuck @ 99.9% and hashfail or are all torrents experiencing the space ossue? Checking with http://distribution.openoffice.org/p2p/ won't take that long.

Are you writing to junction points or a UNC path?

Posted

Before i changed the Sparse file setting, when the size (not size on disk) reached the amount that windows believed I had remaining on the drive, the torrent would shut down claiming there was no more space on disk. So when ut said I had downloaded ~500meg, windows was showing that those files took up 20+gigs, and then ut would shut down the torrent at only a few percent complete. All torrents were experiencing this issue, including the test openoffice torrent.

Since I have changed the sparse file setting, it is still exhibiting this size discrepancy in size, but the phantom size has not yet reached the end of my drive. Note that the size of the files is neither what ut says has been downloaded or the size of the entire torrent, but is somewhere in between.

You'll have to forgive me, but I dont know what you mean by "junction points or UNC path"

Posted

if you don't know what it means it's likely they don't apply ;) junctions are also called hard links.. and in device manager you're able to re-path or multi-path NTFS volumes to other places on the hard drive. UNC is another name for networked path instead of c:\, its \\server\C, or whatnot.

OH! You're not running pre-allocate or compact allocation?

Posted

im sorry, I should have been more clear in my last response. I HAVE cleared up the space for the two 30 gig torrents. But now EVERY torrent I download takes up wildly more space than the actual file, including the Open office torrent that keeps being pushed as a tester, and even small (<10 meg) downloads.

So with lack of a better option, Im going to go back to my earlier question: IS THERE A WAY TO UNDO THIS 1.7.7 UPDATE THAT HAS SCREWED MY TORRENTING ABILITY?

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