# Logstash data storage **URL:** \ **Category:** Logstash\ **Created:** [May 28, 2018, 6:32am UTC](https://discuss.elastic.co/t/logstash-data-storage/133468 "2018-05-28T06:32:37Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Gaurav\_Agarwal](https://avatars.discourse-cdn.com/v4/letter/g/9fc29f/32.png) [@Gaurav\_Agarwal](https://discuss.elastic.co/u/Gaurav_Agarwal)\ **Post date:** [May 28, 2018, 6:32am UTC](https://discuss.elastic.co/t/logstash-data-storage/133468/1 "2018-05-28T06:32:37Z")
Hello all I am running my ELk stack on docker so whenever my logstash loses connection with elasticsearch then the data which is getting parsed where is it stored. According to my observation it is piling up the logstash containers, so is there a particular directory inside the conatiner which it is supposed to pile up if yes then will mounting the directory as a volume outside the conatiner will it help? Regards Gaurav Agarwal ---
**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\ **Post date:** [May 28, 2018, 7:21am UTC](https://discuss.elastic.co/t/logstash-data-storage/133468/2 "2018-05-28T07:21:51Z")
> According to my observation it is piling up the logstash containers, so is there a particular directory inside the conatiner which it is supposed to pile up The data directory. See [Logstash Directory Layout | Logstash Reference [8.11] | Elastic](https://www.elastic.co/guide/en/logstash/current/dir-layout.html). > if yes then will mounting the directory as a volume outside the conatiner will it help? Yes. ---
**Author:** ![Gaurav\_Agarwal](https://avatars.discourse-cdn.com/v4/letter/g/9fc29f/32.png) [@Gaurav\_Agarwal](https://discuss.elastic.co/u/Gaurav_Agarwal)\ **Post date:** [May 28, 2018, 8:01am UTC](https://discuss.elastic.co/t/logstash-data-storage/133468/3 "2018-05-28T08:01:22Z")
Is it the data directory which should be mounted outside since I m not very sure where is the storage piling up is happening? ---
**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\ **Post date:** [May 28, 2018, 8:43am UTC](https://discuss.elastic.co/t/logstash-data-storage/133468/4 "2018-05-28T08:43:55Z")
> Is it the data directory which should be mounted outside I already answered that question. > since I m not very sure where is the storage piling up is happening? But that's easy to check, isn't it? ---
**Author:** ![Gaurav\_Agarwal](https://avatars.discourse-cdn.com/v4/letter/g/9fc29f/32.png) [@Gaurav\_Agarwal](https://discuss.elastic.co/u/Gaurav_Agarwal)\ **Post date:** [May 28, 2018, 9:42am UTC](https://discuss.elastic.co/t/logstash-data-storage/133468/5 "2018-05-28T09:42:08Z")
It says the data directory is not writable. [2018-05-28T09:35:49,874][FATAL][logstash.runner] An unexpected error occurred! {:error=\>#\, ---
**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\ **Post date:** [May 28, 2018, 9:52am UTC](https://discuss.elastic.co/t/logstash-data-storage/133468/6 "2018-05-28T09:52:18Z")
And this happens when mounting a directory from the host...? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [June 25, 2018, 9:52am UTC](https://discuss.elastic.co/t/logstash-data-storage/133468/7 "2018-06-25T09:52:20Z")
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