[Linux-cluster] GFS2 'No space left on device' while df reports 1gb is free

[Vladislav Bogdanov]

02.09.2015 16:34, Bob Peterson wrote:
> ----- Original Message -----
> (snip)
>> Yes, that is a filesystem used only for tests so I can provide its
>> metadata. I'll sent a link to you when it is ready.
>> Should fs be unmounted btw?
>
> Yes, the file system should be unmounted from all nodes before doing
> gfs2_edit savemeta.
>
> Is your work going to be available on RHEL7/Centos7 or is it just RHEL6/Centos6?
> We've done many performance improvements in RHEL7 that have not been
> back-ported to RHEL6, so if you're after better performance and reliability,
> you may consider RHEL7/Centos7.

That is centos6 with backported cluster stack (latest corosync, 
pacemaker, dlm, clvmd rebuilt for corosync2, experimental rewrite of 
gfs_controld for corosync2).

Thank you for hint about performance, unfortunately my customer is not 
willing to upgrade to centos7 yet (that is really huge task), but that 
could be a valid reason for future releases if we see insufficient 
performance. Current performance tests (at least pure throughput) with 
DRBD over IPoIB and dedicated corosync/dlm link are satisfying (10Gbps 
link is fully saturated by NFS/CIFS clients). And we do not have many 
metadata operations on GFS2 level.

Do you have any plans to backport that improvements btw?

Thank you,
Vladislav