[mapserver-users] MapCache - failed to remove lockfile error

Travis Kirstine traviskirstine at gmail.com
Fri Oct 7 09:41:50 EDT 2011 

We checked out a version of mod-geocache on sept 22, my guess is that
it is version 0.4x.  We will check out the latest mapcache version
from the mapserver trunk.

Regards

On 7 October 2011 06:16, thomas bonfort <thomas.bonfort at gmail.com> wrote:
> What version of mod-geocache are you using (revision number or release
> version) ?
>
> On Thu, Oct 6, 2011 at 22:17, Travis Kirstine <traviskirstine at gmail.com> wrote:
>> This doesn't seem to be a issue, I have lots of inodes left.  It
>> appears that the error occurred when generating (linking)  areas with
>> a large volume of transparent tiles, could this be related?
>>
>> Regards
>>
>> On 6 October 2011 14:19, Stephen Woodbridge <woodbri at swoodbridge.com> wrote:
>>> Have you verified that you have not filled up the disk or run out of inodes?
>>>
>>> # check the diskspace with
>>> df -h
>>>
>>> # check for inode issues
>>> touch /path/to/cache/test.junk
>>>
>>> # if the touch failed then you have run out of inodes
>>> # otherwise clean up
>>> rm /path/to/cache/test.junk
>>>
>>> Thanks,
>>>  -Steve W
>>>
>>> On 10/6/2011 12:14 PM, thomas bonfort wrote:
>>>>
>>>> I don't have a specific advice to give unfortunately. There have been
>>>> some fixes lately (macpcache only, not mod-geocache) to the way
>>>> multiple threads accessed the curl library that might help, so you
>>>> might want to try with a fresh checkout from the mapserver svn.
>>>>
>>>> --
>>>> thomas
>>>>
>>>> On Thu, Oct 6, 2011 at 18:08, Travis Kirstine<traviskirstine at gmail.com>
>>>>  wrote:
>>>>>
>>>>> Thomas,
>>>>>
>>>>> My command is below, I'm using a disk cache, my config file is below.
>>>>> I'm using a local copy of MapServer for the source image generation
>>>>>
>>>>>
>>>>> ./geocache_seed -c ../geocache.xml -t ms_tileset_8 -z 0,21 -e
>>>>> -8895580.772,5411569.158,-8797157.196,5538966.276 -n 6
>>>>>
>>>>>
>>>>> <?xml version="1.0" encoding="UTF-8"?>
>>>>> <geocache>
>>>>>
>>>>>   <metadata>
>>>>>      <title>geocache service esx11</title>
>>>>>      <abstract>mod-geocache service</abstract>
>>>>>      <!-- url>http://mysuperhost/proxy/to/geocache</url -->
>>>>>   </metadata>
>>>>>
>>>>>         <grid name="googlemaps_grid">
>>>>>            <metadata>
>>>>>               <title>GoogleMapsCompatible</title>
>>>>>
>>>>> <WellKnownScaleSet>urn:ogc:def:wkss:OGC:1.0:GoogleMapsCompatible</WellKnownScaleSet>
>>>>>            </metadata>
>>>>>            <extent>-20037508.3427892480 -20037508.3427892480
>>>>> 20037508.3427892480 20037508.3427892480</extent>
>>>>>            <srs>EPSG:3857</srs>
>>>>>            <srsalias>EPSG:900913</srsalias>
>>>>>            <units>m</units>
>>>>>            <size>256 256</size>
>>>>>            <resolutions>156543.0339280410 78271.51696402048
>>>>> 39135.75848201023 19567.87924100512 9783.939620502561
>>>>> 4891.969810251280 2445.984905125640 1222.992452562820
>>>>> 611.4962262814100 305.7481131407048 152.8740565703525
>>>>> 76.43702828517624 38.21851414258813 19.10925707129406
>>>>> 9.554628535647032 4.777314267823516 2.388657133911758
>>>>> 1.194328566955879 0.5971642834779395 0.29858214173896975
>>>>> 0.149291070869484875 0.0746455354347424375</resolutions>
>>>>>         </grid>
>>>>>
>>>>>   <cache name="disk" type="disk">
>>>>>      <base>/var/mod-geocache/caches</base>
>>>>>      <symlink_blank/>
>>>>>   </cache>
>>>>>
>>>>>   <format name="PNGQ_FAST" type ="PNG">
>>>>>      <compression>fast</compression>  <!-- fast or best -->
>>>>>      <colors>256</colors>
>>>>>   </format>
>>>>>   <format name="myjpeg" type ="JPEG">
>>>>>      <quality>75</quality>
>>>>>   </format>
>>>>>   <format name="PNG_BEST" type ="PNG">
>>>>>      <compression>best</compression>
>>>>>   </format>
>>>>>   <format name="mixed" type="MIXED">
>>>>>      <transparent>PNG_BEST</transparent>
>>>>>      <opaque>JPEG</opaque>
>>>>>   </format>
>>>>>
>>>>>   <source name="ms_wms" type="wms">
>>>>>      <getmap>
>>>>>         <params>
>>>>>            <FORMAT>image/png</FORMAT>
>>>>>            <LAYERS>YORK2009</LAYERS>
>>>>>            <TRANSPARENT>true</TRANSPARENT>
>>>>>         </params>
>>>>>      </getmap>
>>>>>      <http>
>>>>>         <url>http://localhost.jdbarnes.com/cgi-bin/ms_wms</url>
>>>>>      </http>
>>>>>   </source>
>>>>>
>>>>>   <tileset name="ms_tileset_8">
>>>>>      <source>ms_wms</source>
>>>>>      <cache>disk</cache>
>>>>>      <!--grid restricted_extent="-79.8205259 43.7179074 -79.1161194
>>>>> 44.4110187">WGS84</grid-->
>>>>>      <grid>googlemaps_grid</grid>
>>>>>      <format>mixed</format>
>>>>>      <metatile>8 8</metatile>
>>>>>      <metabuffer>0</metabuffer>
>>>>>   </tileset>
>>>>>
>>>>>   <default_format>JPEG</default_format>
>>>>>
>>>>>   <service type="wmts" enabled="true"/>
>>>>>   <service type="tms" enabled="true"/>
>>>>>   <service type="kml" enabled="true"/>
>>>>>   <service type="gmaps" enabled="true"/>
>>>>>   <service type="ve" enabled="true"/>
>>>>>   <service type="demo" enabled="true"/>
>>>>>
>>>>>   <errors>report</errors>
>>>>>
>>>>>   <lock_dir>/var/mod-geocache/caches</lock_dir>
>>>>>
>>>>> </geocache>
>>>>>
>>>>> On 6 October 2011 10:31, thomas bonfort<thomas.bonfort at gmail.com>  wrote:
>>>>>>
>>>>>> what seed command were you using, and what kind of cache ?
>>>>>>
>>>>>> On Thu, Oct 6, 2011 at 15:52, Travis Kirstine<traviskirstine at gmail.com>
>>>>>>  wrote:
>>>>>>>
>>>>>>> Thanks Thomas,
>>>>>>>
>>>>>>> The complete error message is below.  Do you have any idea what would
>>>>>>> cause this error - why would mapcache fail to create or delete the
>>>>>>> lockfile.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> seeding tile 583296 1337304 21failed to remove lockfile
>>>>>>> /var/mod-geocache/cachesseeding tile 583304 1337296 21failed to remove
>>>>>>> lockfile
>>>>>>> /var/mod-geocache/caches/_gc_lock-21-167156-72919-ms_tileset_8:
>>>>>>> No such file or directoryfailed to remove lockfile
>>>>>>> /var/mod-geocache/caches/_gc_lock-21-167157-72919-ms_tileset_8: No
>>>>>>> such file or directoryfailed to remove lockfile
>>>>>>> /var/mod-geocache/caches/_gc_lock-20-83579-36459-ms_tileset_8: No such
>>>>>>> file or directoryfailed to remove lockfile
>>>>>>> /var/mod-geocache/caches/_gc_lock-21-167156-72918-ms_tileset_8: No
>>>>>>> such file or directoryfailed to remove lockfile
>>>>>>> /var/mod-geocache/caches/_gc_lock-21-167159-72918-ms_tileset_8: No
>>>>>>> such file or directoryfailed to remove lockfile
>>>>>>> /var/mod-geocache/caches/_gc_lock-21-167158-72918-ms_tileset_8: No
>>>>>>> such file or directoryfailed to remove lockfile
>>>>>>> /var/mod-geocache/caches/_gc_lock-21-167159-72919-ms_tileset_8: No
>>>>>>> such file or directoryfailed to remove lockfile
>>>>>>> /var/mod-geocache/caches/_gc_lock-18-20895-9114-ms_tileset_8: No such
>>>>>>> file or directoryfailed to remove lockfile
>>>>>>> /var/mod-geocache/caches/_gc_lock-21-167158-72919-ms_tileset_8: No
>>>>>>> such file or directory
>>>>>>>
>>>>>>>
>>>>>>> Regards
>>>>>>>
>>>>>>>
>>>>>>> On 6 October 2011 09:11, thomas bonfort<thomas.bonfort at gmail.com>
>>>>>>>  wrote:
>>>>>>>>
>>>>>>>> The log message should be more explicit, and contain the reason of the
>>>>>>>> unsuccessful removal. In any case, looking at the code, this error
>>>>>>>> will have interrupted the seeding process.
>>>>>>>>
>>>>>>>> regards,
>>>>>>>> thomas
>>>>>>>>
>>>>>>>> On Thu, Oct 6, 2011 at 15:03, Travis
>>>>>>>> Kirstine<traviskirstine at gmail.com>  wrote:
>>>>>>>>>
>>>>>>>>> Hi All,
>>>>>>>>> I hope this is the right spot to post MapCache questions.  I had
>>>>>>>>> seeded a large area and receive the error "failed to remove
>>>>>>>>> lockfile".
>>>>>>>>>  It appears that this error(s) happens at the end of the seeding but
>>>>>>>>> it is hard tell as the process has been running for a few days.  Does
>>>>>>>>> this error kill the seeder process or is it simply a warning?
>>>>>>>>>
>>>>>>>>> Regards
>>>>>>>>> _______________________________________________
>>>>>>>>> mapserver-users mailing list
>>>>>>>>> mapserver-users at lists.osgeo.org
>>>>>>>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
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>

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