Re: fallocate fail on btrfs

["G. Richard Bellamy" <rbellamy@pteradigm.com>]

Also, here's the strace of the fallocate call:
http://sprunge.us/QXFN

On Wed, Aug 27, 2014 at 10:39 AM, G. Richard Bellamy
<rbellamy@pteradigm.com> wrote:
> Good questions, should have included that info in the OP.
>
> The current versions I can get, but I'm frankly terrified to try to
> roll back to prior versions to "test" this, since back in that land be
> monsters with deadlocks preventing degraded volumes from being fixed
> and other challenges I wasn't qualified to fix - and it was over three
> months ago that I tried fallocate last. I run Arch and aggressively
> update, so I can infer what those version were, and will do so, though
> I know that is of limited efficacy in helping you help me...
>
> Best-guess Prior (2014-06-30):
> ------------------------------------------------
> linux-lts 3.10.45-1
> btrfs-progs 3.14.2-2
> linux 3.15.2-1
> util-linux 2.24.2-1
>
> Current (2014-08-27 10:28:07):
> -----------
> rbellamy@eanna i ~ % pacman -Q linux-lts btrfs-progs-git linux util-linux
> linux-lts 3.14.17-1
> btrfs-progs-git 3.16_108_d34cbe7-1
> linux 3.16.1-1
> util-linux 2.25-3
>
> On Tue, Aug 26, 2014 at 11:39 PM, Duncan <1i5t5.duncan@cox.net> wrote:
>> G. Richard Bellamy posted on Tue, 26 Aug 2014 22:05:01 -0700 as excerpted:
>>
>>> When I try to run fallocate with "--keep-size" on my btrfs partitions,
>>> it's failing, and I'm at a loss as to why. This was working in prior
>>> versions.
>>>
>>> Any suggestions on how to attack this problem? I'm betting I'm missing
>>> something simple here, and have just gone down the rabbit hole...
>>>
>>> BTW, I've confirmed that the line that fails is fallocate.c:368 [2],
>>> with "open" always returning -1.
>>
>> One "something simple" you're missing (either that or I am) is any
>> reference to which version you're running.  You say it was working in
>> prior versions, but /which/ prior versions, and /which/ version doesn't
>> work now?
>>
>> --
>> Duncan - List replies preferred.   No HTML msgs.
>> "Every nonfree program has a lord, a master --
>> and if you use the program, he is your master."  Richard Stallman
>>
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