[lustre-discuss] MDT partition getting full
Radu Popescu
radu.popescu at amoma.com
Fri Apr 24 00:21:07 PDT 2015
Ok, so I got some automated reply that my post is too big. I’ve uploaded the print screens some place.
So, first, here’s the listing of some random folders in /O/1/
debugfs: ls -l /O/1/d14
30408754 40700 (2) 0 0 12288 24-Apr-2015 05:36 .
30408739 40755 (2) 0 0 4096 6-Apr-2015 08:53 ..
216 100644 (17) 0 0 4153280 23-Apr-2015 14:20 7662
339 100644 (17) 0 0 4153280 23-Apr-2015 19:24 7790
369 100644 (17) 0 0 4153280 23-Apr-2015 20:29 7822
402 100644 (17) 0 0 4153280 23-Apr-2015 21:37 7854
433 100644 (17) 0 0 4153280 23-Apr-2015 22:56 7886
491 100644 (17) 0 0 4153280 24-Apr-2015 01:52 7950
547 100644 (17) 0 0 4153280 24-Apr-2015 05:36 8014
7575 100644 (17) 0 0 4153280 23-Apr-2015 07:34 7534
120 100644 (17) 0 0 4153280 23-Apr-2015 09:29 7566
153 100644 (17) 0 0 4153280 23-Apr-2015 11:08 7598
184 100644 (17) 0 0 4153280 23-Apr-2015 12:51 7630
248 100644 (17) 0 0 4153280 23-Apr-2015 15:46 7694
308 100644 (17) 0 0 4153280 23-Apr-2015 18:15 7758
464 100644 (17) 0 0 4153280 24-Apr-2015 00:20 7918
521 100644 (17) 0 0 4153280 24-Apr-2015 03:35 7982
debugfs: ls -l /O/1/d13
30408753 40700 (2) 0 0 12288 24-Apr-2015 05:31 .
30408739 40755 (2) 0 0 4096 6-Apr-2015 08:53 ..
152 100644 (17) 0 0 4153280 23-Apr-2015 11:04 7597
215 100644 (17) 0 0 4153280 23-Apr-2015 14:17 7661
401 100644 (17) 0 0 4153280 23-Apr-2015 21:35 7853
463 100644 (17) 0 0 4153280 24-Apr-2015 00:18 7917
490 100644 (17) 0 0 4153280 24-Apr-2015 01:49 7949
546 100644 (17) 0 0 4153280 24-Apr-2015 05:31 8013
119 100644 (17) 0 0 4153280 23-Apr-2015 09:26 7565
183 100644 (17) 0 0 4153280 23-Apr-2015 12:48 7629
247 100644 (17) 0 0 4153280 23-Apr-2015 15:44 7693
278 100644 (17) 0 0 4153280 23-Apr-2015 17:02 7725
307 100644 (17) 0 0 4153280 23-Apr-2015 18:13 7757
338 100644 (17) 0 0 4153280 23-Apr-2015 19:22 7789
370 100644 (17) 0 0 4153280 23-Apr-2015 20:27 7821
432 100644 (17) 0 0 4153280 23-Apr-2015 22:53 7885
522 100644 (17) 0 0 4153280 24-Apr-2015 03:31 7981
debugfs: ls -l /O/1/d12
30408752 40700 (2) 0 0 16384 24-Apr-2015 05:27 .
30408739 40755 (2) 0 0 4096 6-Apr-2015 08:53 ..
214 100644 (17) 0 0 4153280 23-Apr-2015 14:14 7660
246 100644 (17) 0 0 4153280 23-Apr-2015 15:42 7692
306 100644 (17) 0 0 4153280 23-Apr-2015 18:10 7756
337 100644 (17) 0 0 4153280 23-Apr-2015 19:20 7788
462 100644 (17) 0 0 4153280 24-Apr-2015 00:16 7916
489 100644 (17) 0 0 4153280 24-Apr-2015 01:46 7948
151 100644 (1) 0 0 4153280 23-Apr-2015 11:01 7596
118 100644 (17) 0 0 4153280 23-Apr-2015 09:23 7564
400 100644 (17) 0 0 4153280 23-Apr-2015 21:33 7852
544 100644 (17) 0 0 4153280 24-Apr-2015 05:27 8012
182 100644 (17) 0 0 4153280 23-Apr-2015 12:46 7628
431 100644 (17) 0 0 4153280 23-Apr-2015 22:51 7884
Apparently, all of them have 4MB and it seems the number of files is growing. Some of them were created yesterday and some today.
Don’t know if I can attach some print screens to this email and will be shown in the thread, but I’ll try anyway. Basically, after unmounting / re-mounting lustre partitions on the server yesterday (and I actually tried the same on 2 of them), I could see on the graphs that the used storage is decreasing (actually, from the graphs, which show free storage, is increasing). So maybe, is it some sort of caching?
The links:
http://5.175.193.50/ps1.png <http://5.175.193.50/ps1.png>
http://5.175.193.50/ps2.png <http://5.175.193.50/ps2.png>
Thanks,
Radu
> On 23 Apr 2015, at 21:01, Mohr Jr, Richard Frank (Rick Mohr) <rmohr at utk.edu> wrote:
>
>
>> On Apr 23, 2015, at 1:07 PM, Colin Faber <cfaber at gmail.com> wrote:
>>
>>
>> Based on the directory structure here, this appears to be an OST. are you sure your targets are correctly named?
>>
>
> That is what I would have guessed until I took a look at my own MDT. Sure enough, I have the directories /O/1/d[0-31] and each one seems to have 3 files that are about 3.5MB each (along with some other smaller ones). Here is what one of those directories looks like:
>
> debugfs: ls -l /O/1/d14
> 16777293 40700 (2) 0 0 4096 20-Apr-2015 14:09 .
> 16777278 40755 (2) 0 0 4096 13-May-2014 16:51 ..
> 58129 100644 (1) 0 0 8256 13-May-2014 16:51 14
> 58162 100644 (1) 0 0 8256 13-May-2014 16:51 46
> 58197 100644 (1) 0 0 8256 13-May-2014 16:51 78
> 58237 100644 (1) 0 0 37632 13-May-2014 19:28 110
> 58271 100644 (1) 0 0 38464 13-May-2014 19:28 142
> 58305 100644 (1) 0 0 37888 13-May-2014 19:28 174
> 58343 100644 (1) 0 0 37184 13-May-2014 19:28 206
> 58396 100644 (1) 0 0 37312 13-May-2014 19:28 238
> 58429 100644 (1) 0 0 36160 13-May-2014 19:28 270
> 12824 100644 (1) 0 0 3623232 20-Apr-2015 14:09 43150
> 12915 100644 (1) 0 0 3800960 20-Apr-2015 14:09 43182
> 12954 100644 (1) 0 0 3769216 20-Apr-2015 14:09 43214
>
> The three large files seem to have been created the last time the MDT was mounted. The timestamps for the other smaller files coincides with the Lustre upgrade we performed last year. But I am not sure what is contained in these files.
>
> Radu: Are the timestamps for all of your files the same? Or is the system gradually accumulating them over time for some reason?
>
> --
> Rick Mohr
> Senior HPC System Administrator
> National Institute for Computational Sciences
> http://www.nics.tennessee.edu
>
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