Storage Usage - how to make it full?

Question

Hi,

I have Isilon 8 Simulator with one nodepool and Tier.

I want to make the storage usage full for the cluster so i can test the disk usage.

I kept writing infinitely to the file system using yes command, got message "cant write anymore, file system is full" , After that checked on my Isilon web UI, but still see that my storage usage is at 3 % and not even close to Full.

attaching out put of writing to FS and storagepool :

ST-A-1# yes abcdefghijklmnopqrstuvwxyz0123456789 > largefile

/: write failed, filesystem is full

yes: stdout: No space left on device

ST-A-1# isi storagepool list

Name Nodes Requested Protection HDD Total % SSD Total %

-------------------------------------------------------------------------------

Tier1 - 0b 0b 0.00% 0b 0b 0.00%

Tier2 1-3 - 2.924G 106.485G 2.75% 0b 0b 0.00%

- suzyTest 1-3 +2d:1n 2.924G 106.485G 2.75% 0b 0b 0.00%

-------------------------------------------------------------------------------

Total: 3 2.924G 106.485G 2.75% 0b 0b 0.00%

Thanks,

Yan_Faubert · Answer

Can you double check that you are writing in /ifs and not somewhere else. From the error message it appears you are writing in the root file system. (I.e. '/') -- Sent from my iPhone

suzyTheGreat · Answer

just checked, and saw i was writing to / and not /ifs I will remove that file from the root dir and write inside /ifs and see if i can see any increase in storage usage after this. Thanks,

suzyTheGreat · Answer

I can already see it increasing, it already got to 5 % from 3 % Thanks for the help.

Anonymous User · Answer

Use dd to create large files - significantly faster.

Try something like this:

for f in `jot - 1 1000000`

do

dd if=/dev/zero of=/ifs/data/foo.$f count=100 bs=4k

done

This will create a lot of 400k files. You can play with the size and count as much as you want. Don't do this in production.

crklosterman · Answer

If you want the dataset to be a bit more realistic, use /dev/urandom instead of /dev/null, which'll be just all zeroes. Just a friendly suggestion. Of course I wouldn't be testing performance of a simulator on VMware, if you want performance tests, talk to your account team about a POC cluster or something like that. We even have hosted POCs available for some use cases.

~Chris

Isilon

Storage Usage - how to make it full?

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