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 Forum index » Advanced Topics » Additional Software (PETs, n' stuff) » Filesystem
BTRFS filesystem format
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rhadon


Joined: 27 Mar 2008
Posts: 1293
Location: Germany

PostPosted: Fri 10 Feb 2012, 04:41    Post subject:  BTRFS filesystem format
Subject description: Am I alone who find it most interesting?
 

A short while ago I stumbled over BTRFS. With Gparted 0.11.0 (the common version 0.8.1 doesn't work) I was able to format a 1G partition of my usb stick with this fs and to use it. And I compared:
Code:
FS    used space after formatting
FAT32        2.08M
NTFS          5.75M
ext2         17.89M
ext3         49.93M
ext4         49.93M
reiser       32.11M
xfs           10.08M
btrfs         28.00k (k, no typo)


This looks very attractive to me. Kernel since 2.6.38 can handle this format, Gparted can do it, but not Grub, Grub4Dos, Initrd, Pmount and so on.

I know that this file system is experimental (till now no working repair tools) but I would expect more interest on the puppy front. Only scsijon mentioned btrfs sometimes.

Is it too soon? Do I miss something?

Regards
Rolf

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aarf

Joined: 30 Aug 2007
Posts: 3620
Location: around the bend

PostPosted: Fri 10 Feb 2012, 05:24    Post subject:  

Have seen and had this file system on externals when temporarily wandering to other distros. Cant remember which ones perhaps fedora mego or mint. Didnt really play long enough to form an opinion of btrfs. I like the recoverability of ext3 as i am careless with my battery monitoring and have defective power cables. If btrfs can recover from power outage as well as ext3 i would of course be most interested in the space saving.
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Eyes-Only


Joined: 10 Aug 2006
Posts: 1046
Location: La Confederation Abenaquaise

PostPosted: Fri 10 Feb 2012, 09:34    Post subject:  

Myself as well! 28k? WHOA!!! Shocked I mean... that's astounding! Of course Rolf, as you've written, this is still rather "experimental" as a file system. So you know what I see in my "crystal ball"? I see more and more Devs working to develop the filing system until - before you know it! - it too will be consuming a hefty chunk of the blank/available space of the partition so that ext3 will still remain the "apple of our eye" for most/many Linux users.

But I must confess that it really is disheartening to go and format a 100gig partition only to see so much of it eaten up by the file system alone! And often times it's far, far, more than our precious operating system we've all come to know and love that we're installing into that very space! Crying or Very sad

Keep us posted Rolf if you will? Thanks!

Ciao/Amicalement/"Mit besten wishen",

Eyes-Only
"L'Peau-Rouge d'Acadie"

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aarf

Joined: 30 Aug 2007
Posts: 3620
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PostPosted: Fri 10 Feb 2012, 10:40    Post subject:  

Cant find gparted .11 in my puppies or searching the forum.
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rhadon


Joined: 27 Mar 2008
Posts: 1293
Location: Germany

PostPosted: Fri 10 Feb 2012, 16:24    Post subject:  

I compared a little bit more. I formatted a 22.46GB partition, copied 55 files with ~10GB (55 different puppy ISOs Razz ) then copied this files once more to a subfolder (~20GB). See attachment. As you can see, ext3 uses ~520-560MB more space than btrfs, ~490MB more than reiserfs and ~470MB more than ntfs.

I also used reiserfs for several month with Lupu-525. For the partition and for my save file. I mentioned it several times but no one was interested. I can confirm that it's at least as stable as ext3. I did a lot of improper shutdowns. During boot, partition system check (reiserfsck) was a lot faster than e2fsck on a similar partition, formatted with ext3. But it's not supported by initrd. It's the only reason that I don't use it for my save files. Too much work to patch the init script for every new puppy version.

@Aarf
I use the Gparted live cd, thinking it was from here, stable release.

Cheers
Rolf
used_space.png
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used_space.png


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sunburnt


Joined: 08 Jun 2005
Posts: 5043
Location: Arizona, U.S.A.

PostPosted: Mon 11 Jun 2012, 20:46    Post subject:  

I`m not sure what your data is showing, but I`m guessing less is better?

I don`t think ext4 is much different than Brtfs or Xfs in drive usage.

My main interest is that all of the above FS will do compression.
But I don`t know how to enable it and control which comp. format it uses.

I want to make a compressed image file of Puppy`s Save file.
Then a 1/2 GB will be like the Save file being over 1 GB, much better.
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