Re: Disk use with GlusterFS

[Aravinda VK <aravinda@xxxxxxxxx>]

Hi David,

Is this Volume is uses Geo-replication? Geo-replication feature enables Changelog to identify the latest changes happening in the GlusterFS volume. 

Content of .glusterfs directory also includes hardlinks to the actual data, so the size shown in .glusterfs is including data. Please refer the comment by Xavi https://github.com/gluster/glusterfs/issues/833#issuecomment-594436009

If Changelogs files are causing issue, you can use archival tool to remove processed changelogs.

https://github.com/aravindavk/archive_gluster_changelogs

—

regards

Aravinda Vishwanathapura

https://kadalu.io

On 05-Mar-2020, at 9:02 AM, David Cunningham <dcunningham@xxxxxxxxxxxxx> wrote:

Hello,

We are looking for some advice on disk use. This is on a single node GlusterFS test server.

There's a 2GB partition for GlusterFS. Of that, 470MB is used for actual data, and 1GB is used by the .glusterfs directory. The .glusterfs directory is mostly used by the two-character directories and the "changelogs" directory. Why is so much used by .glusterfs, and can we reduce that overhead?

We also have a problem with this test system where GlusterFS is giving "No space left on device" errors. That's despite "df" reporting only 54% used, and even if we add the 470MB to 1GB used above, that still comes out to less than the 2GB available, so there should be some spare.

Would anyone be able to advise on these please? Thank you in advance.

The GlusterFS version is 5.11 and here is the volume information:

Volume Name: gvol0
Type: Distribute
Volume ID: 33ed309b-0e63-4f9a-8132-ab1b0fdcbc36
Status: Started
Snapshot Count: 0
Number of Bricks: 1
Transport-type: tcp
Bricks:
Brick1: myhost:/nodirectwritedata/gluster/gvol0
Options Reconfigured:
transport.address-family: inet
nfs.disable: on
geo-replication.indexing: on
geo-replication.ignore-pid-check: on
changelog.changelog: on

--

David Cunningham, Voisonics Limited
http://voisonics.com/
USA: +1 213 221 1092
New Zealand: +64 (0)28 2558 3782

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