GFS2 writes extremely slow

Thu Apr 5 15:08:16 EEST 2018

Hello all,
We are facing extremely slow GFS2 issues in Redhat 7 64 bit. Backend is 16 Gbps FC SAN so no issues there.

I have scoured the entire (anyways most of the) Internet and arrived at the following settings.

mmap_disable = yes
mail_fsync = always
mail_nfs_storage = yes
mail_nfs_index = yes
mmap_disable = yes
lock_method = fcntl

Did a systemctl restart dovecot and did not find any major improvement.
Can you please help.

Regards
Durga Prasad

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