Re: basic questions regarding some btrfs features

2012-12-03 Thread Hugo Mills
On Sun, Dec 02, 2012 at 07:49:17PM -0700, Chris Murphy wrote: On Dec 2, 2012, at 6:59 PM, Michael m...@draftx.net wrote: Subvolid=0 is always the root subvolume. OK so then what is subvolid=5? subvolid=5 is the actual ID used internally for the top-level subvolume. subvolid=0 won't

Re: basic questions regarding some btrfs features

2012-12-03 Thread Aastha Mehta
Hello, Thank you so much for your prompt response. Few more questions inline. On 2 December 2012 23:46, Hugo Mills h...@carfax.org.uk wrote: On Sun, Dec 02, 2012 at 11:17:26PM +0100, Aastha Mehta wrote: I am looking at btrfs to understand some of its features. One of them is the snapshot

Re: Snapper snapshot comparison algorithm - send/receive questions

2012-12-03 Thread Arvin Schnell
On Sat, Dec 01, 2012 at 01:24:20PM +0530, nafisa mandliwala wrote: I needed help with understanding the snapshot comparison algorithm that snapper uses and its shortcomings. From reading the code, what I understood is that it does a block by block compare. I'm not very sure if that's the best

Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Swâmi Petaramesh
Hi folks, My laptop is a Core i3-2310M with 4 GB RAM, running BTRFS on a 1 TB HD. I run Ubuntu 12.10 Quantal, kernel 3.5.0-19-generic 64-bit. I wanted to give a shot at bitcoin so I installed it from the Ubuntu PPA, and started getting the database from the Internet. (it's now 4.5 GB big on

Re: basic questions regarding some btrfs features

2012-12-03 Thread Hugo Mills
On Mon, Dec 03, 2012 at 10:52:41AM +0100, Aastha Mehta wrote: On 2 December 2012 23:46, Hugo Mills h...@carfax.org.uk wrote: On Sun, Dec 02, 2012 at 11:17:26PM +0100, Aastha Mehta wrote: I am looking at btrfs to understand some of its features. One of them is the snapshot feature. Please

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2012-12-03 Thread Ernest Wilson
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Re: Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Hugo Mills
On Mon, Dec 03, 2012 at 12:54:30PM +0100, Swâmi Petaramesh wrote: Hi folks, My laptop is a Core i3-2310M with 4 GB RAM, running BTRFS on a 1 TB HD. I run Ubuntu 12.10 Quantal, kernel 3.5.0-19-generic 64-bit. Try 3.7. That's had some significant performance improvements. 3.5 is over 6

Re: Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Swâmi Petaramesh
Le 03/12/2012 13:09, Hugo Mills a écrit : Try 3.7. That's had some significant performance improvements. 3.5 is over 6 months old, which is a long time in btrfs development. I understand the suggestion from a developper's PoV, but from a user's that's much too much hassle living ahead of one's

Re: Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Jan Schmidt
Hi Swâmi, On Mon, December 03, 2012 at 12:54 (+0100), Swâmi Petaramesh wrote: Hi folks, My laptop is a Core i3-2310M with 4 GB RAM, running BTRFS on a 1 TB HD. I run Ubuntu 12.10 Quantal, kernel 3.5.0-19-generic 64-bit. I wanted to give a shot at bitcoin so I installed it from the

Re: 64KB boot sector gap

2012-12-03 Thread Chris Mason
On Mon, Dec 03, 2012 at 12:34:06AM -0700, Chris Murphy wrote: When creating a btrfs volume with mkfs.btrfs, I'm noticing that the first 64KB are completely blank. Is this gap expressly intended for installing a boot manager/loader? e.g. GRUB 2 allows installation of boot.img + core.img into a

Re: Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Swâmi Petaramesh
Le 03/12/2012 16:55, Jan Schmidt a écrit : Use ubuntu (which in the default setup means you're using ecryptfs for your /home), I actually do not use ecryptfs here, but OTOH I have BTRFS over LUKS/LVM. But I've been using pretty *anything over LUKS/LVM for years, and I've never notice it cause

Re: Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Wade Cline
Hi Swâmi, On 12/03/2012 04:09 AM, Hugo Mills wrote: On Mon, Dec 03, 2012 at 12:54:30PM +0100, Swâmi Petaramesh wrote: Hi folks, My laptop is a Core i3-2310M with 4 GB RAM, running BTRFS on a 1 TB HD. I run Ubuntu 12.10 Quantal, kernel 3.5.0-19-generic 64-bit. Try 3.7. That's had some

Re: 64KB boot sector gap

2012-12-03 Thread Zach Brown
On Mon, Dec 03, 2012 at 12:34:06AM -0700, Chris Murphy wrote: When creating a btrfs volume with mkfs.btrfs, I'm noticing that the first 64KB are completely blank. Is this gap expressly intended for installing a boot manager/loader? If you want some historical reading check out the 'BTRFS

Can't mount luks partition after reboot

2012-12-03 Thread Travis LaDuke
This is kind of silly, but may be salvageable... I made a btrfs on top of luks partition and tried it for a couple days. Then I made another luks partition on another drive then added and balanced that new drive as btrfs raid1. A lot of time passed and the balance finished. Then I

Re: Can't mount luks partition after reboot

2012-12-03 Thread cwillu
On Mon, Dec 3, 2012 at 7:22 PM, Travis LaDuke travislad...@gmail.com wrote: This is kind of silly, but may be salvageable... I made a btrfs on top of luks partition and tried it for a couple days. Then I made another luks partition on another drive then added and balanced that new drive as

Re: Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Chris Samuel
On 03/12/12 23:24, Swâmi Petaramesh wrote: I understand the suggestion from a developper's PoV, but from a user's that's much too much hassle living ahead of one's distro's kernel, or using vanilla ones. Been there, done that. No more suffering for me please ;-)) I'll have to stick with

Re: [PATCH 1/2] Btrfs: fix permissions of empty files not affected by umask

2012-12-03 Thread Filipe Brandenburger
Hi, Any concerns on this patchset? Any chance it can be integrated in time for 3.8 or too risky for it? The Bugzilla entry contains some test cases that reproduce the issue fairly easily by unmounting the filesystem right after creating an empty file... Let me know if there are any extra fixes or

Re: Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Swâmi Petaramesh
Hi Chris, Le 04/12/2012 03:18, Chris Samuel a écrit : In that case maybe using an experimental filesystem that is under rapid development might not be a good choice, it might be better to stick to one of the existing stable filesystems instead. I already made the move back and forth ext4 -