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CIFS shares on Centos7 are not available if single node of fileshare cluster goes down even if using FQDN for multi-node storage cluster

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I am currently mounting cifs shares using /etc/fstab and 'mount -a'. Here is an example of one of the mount fstab lines (minus some specfic share naming info):

\\filer-01.domainname.com\apps\foldername /apps/foldername cifs credentials=/etc/cifs.credentials,vers=3.0,cache=strict,uid=appname,gid=appname 0 0

That filer-01 FQDN points to several round-robin IP addresses for each node in my storage cluster. So if one goes down, another is able to take the connection. However, when restarting nodes one-by-one I noticed some of these CIFS mounts failing to connect, almost like they were locked to a specific IP and did not swap to another node. Does fstab mounting not provide automatic reconnection using DNS name for cluster? Thanks.

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