The BOINC code doesn't assume a block size:
struct statfs fs_info;
statfs(path, &fs_info);
total_space = (double)fs_info.f_frsize * (double)fs_info.f_blocks;
free_space = (double)fs_info.f_frsize * (double)fs_info.f_bavail;
-- David
On 04-Feb-2013 2:01 PM, Eric J Korpela wrote:
> Is it possible that the boinc disk space calculation is assuming 512 byte
> blocks but that tmpfs is using some other size (4k?).
>
> On Mon, Feb 4, 2013 at 1:21 PM, Rom Walton <[email protected]> wrote:
>
>> How much space is used by the 'projects' directory? Are you attached to
>> any other project?
>>
>> ----- Rom
>>
>> -----Original Message-----
>> From: [email protected]
>> [mailto:[email protected]] On Behalf Of Ken Sharp
>> Sent: Monday, February 04, 2013 4:13 PM
>> To: [email protected]
>> Subject: [boinc_alpha] Available disc space: something doesn't add
>> up(tmpfs?)
>>
>>
>> Hi,
>>
>> I am attempting to run a BOINC client with LHC@Home on a tmpfs mount in
>> order to reduce disk I/O. The server is highly reliable so this will not
>> be a problem.
>>
>> Unfortunately the numbers reported by BOINC do not seem to add up,
>> regardless of the preference settings.
>>
>> I have tried with 7.0.44 (and 7.0.26) under Ubuntu 12.04. I have a
>> feeling that this may be related to the tmpfs mount, but if it is me
>> being thick then so be it.
>>
>> 04-Feb-2013 19:58:19 [---] max disk usage: 0.24GB
>>
>> 04-Feb-2013 19:59:21 [LHC@home 1.0] SixTrack needs 152.68MB more disk
>> space. You currently have 38.06 MB available and it needs 190.73 MB.
>>
>> tmpfs 256M 14M 243M 6% /tmp
>>
>> <disk_max_used_gb>10.000000</disk_max_used_gb>
>> <disk_max_used_pct>100.000000</disk_max_used_pct>
>> <disk_min_free_gb>0.000000</disk_min_free_gb>
>>
>> I have tried similar with larger, dedicated tmpfs mounts but the problem
>> is the same.
>>
>> I cannot see an obvious problem with my preferences nor my free disk
>> space. Is BOINC incompatible with tmpfs?
>>
>> Regards,
>>
>> Ken
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