The attached patch was never committed to the upstream kernel by the
btrfs developers. I've therefor marked it as not a patch for this bug.
** Tags removed: patch
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Yes, thanks, it's now here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/797075
It's hard to tell how many of the subscribers to this bug are affected
by the same issue, or whether there are other performance issues with
fsync/btrfs. I don't think btrfs was set up with 'discard' by
I think that in my case, this is caused by me using the 'discard'
option. See e.g:
http://lists-archives.org/linux-kernel/27396958-btrfs-and-apt-package-
manager-in-ubuntu-discard-stalls.html
I did the test suggested, and with discard enabled, it took about 45
seconds, without discard it took
@Ketil: you can report a new bug with 'ubuntu-bug name of package'.
The trick is in finding the right package name. (I find the Report a
bug links very frustrating as well.)
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I just did an 'apt-get upgrade' and not only did it appear to take
somewhere close to forever, it also bogged down the rest of the system.
In the end, I interrupted the process, did the workaround from here:
https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/607632/comments/12
and restarted the
@greg: I can't confirm those 5 minutes here. But I used compression and
remove the fsck.btrfs link as that slows down the boot and doesn't do
much yet. Can you install bootchart to check where it gets stuck for so
long?
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natty's nifty fast startup also bites the dust in btrfs. 5 minutes
instead of 15 seconds.
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https://bugs.launchpad.net/bugs/601299
Title:
[Maverick/Natty] btrfs is extremely slow
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Today i install Xubuntu 11.04 64bit (finall) to USB stick with btrfs as /.
Lately remount as compress.
All worked now good.
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https://bugs.launchpad.net/bugs/601299
Title:
I had to give up on an install after 45 minutes and only 30% finished,
using Beta 2.
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https://bugs.launchpad.net/bugs/601299
Title:
[Maverick/Natty] btrfs is extremely slow
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Still the same problem with 2.6.38-7.
By the way activating the dpkg option --force-unsafe-io doesn't really
speed things up.
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https://bugs.launchpad.net/bugs/601299
Title:
I can confirm it in latest Natty (Alpha 3), 2.6.38-5
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https://bugs.launchpad.net/bugs/601299
Title:
[Maverick/Natty] btrfs is extremely slow
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Confirmed on Natty (Ubuntu 2.6.38-3.30-generic 2.6.38-rc4)
** Summary changed:
- btrfs slow install
+ [Maverick/Natty] btrfs is extremely slow
** Tags added: natty
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