11-15-2018
Can you clarify, do you need two boxes with NFS as clustered resource or ?
For snapshots and stuff (outside cloud provider), ZFS filesystem should offer the same, if used on NFS server as filesystem.
There is also an options of LVM snapshots.
You can use it on open solaris implementations such as OmniOS or modern linux with openzfs implementation.
OpenZFS
This is what is proven and working.
There is BRTFS as well as a GPL COW filesystem, with snapshots, which i cannot suggest, since i'm not sure if it is mature enough for production usage.
Regards
Peasant.
Last edited by Peasant; 11-15-2018 at 08:03 AM..
Reason: Forgot lvm capabilities.
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LEARN ABOUT SUSE
ocf_heartbeat_filesystem
OCF_HEARTBEAT_FILESY(7) OCF resource agents OCF_HEARTBEAT_FILESY(7)
NAME
ocf_heartbeat_Filesystem - Manages filesystem mounts
SYNOPSIS
Filesystem [start | stop | notify | monitor | validate-all | meta-data]
DESCRIPTION
Resource script for Filesystem. It manages a Filesystem on a shared storage medium. The standard monitor operation of depth 0 (also known
as probe) checks if the filesystem is mounted. If you want deeper tests, set OCF_CHECK_LEVEL to one of the following values: 10: read first
16 blocks of the device (raw read) This doesn't exercise the filesystem at all, but the device on which the filesystem lives. This is noop
for non-block devices such as NFS, SMBFS, or bind mounts. 20: test if a status file can be written and read The status file must be
writable by root. This is not always the case with an NFS mount, as NFS exports usually have the "root_squash" option set. In such a setup,
you must either use read-only monitoring (depth=10), export with "no_root_squash" on your NFS server, or grant world write permissions on
the directory where the status file is to be placed.
SUPPORTED PARAMETERS
device
The name of block device for the filesystem, or -U, -L options for mount, or NFS mount specification. (required, string, no default)
directory
The mount point for the filesystem. (required, string, no default)
fstype
The optional type of filesystem to be mounted. (required, string, no default)
options
Any extra options to be given as -o options to mount. For bind mounts, add "bind" here and set fstype to "none". We will do the right
thing for options such as "bind,ro". (optional, string, no default)
statusfile_prefix
The prefix to be used for a status file for resource monitoring with depth 20. If you don't specify this parameter, all status files
will be created in a separate directory. (optional, string, default .Filesystem_status/)
SUPPORTED ACTIONS
This resource agent supports the following actions (operations):
start
Starts the resource. Suggested minimum timeout: 60.
stop
Stops the resource. Suggested minimum timeout: 60.
notify
Suggested minimum timeout: 60.
monitor
Performs a detailed status check. Suggested minimum timeout: 40. Suggested interval: 20.
validate-all
Performs a validation of the resource configuration. Suggested minimum timeout: 5.
meta-data
Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5.
EXAMPLE
The following is an example configuration for a Filesystem resource using the crm(8) shell:
primitive example_Filesystem ocf:heartbeat:Filesystem
params
device=string
directory=string
fstype=string
op monitor depth="0" timeout="40" interval="20"
SEE ALSO
http://www.linux-ha.org/wiki/Filesystem_(resource_agent)
AUTHOR
Linux-HA contributors (see the resource agent source for information about individual authors)
resource-agents 1.0.3 07/05/2010 OCF_HEARTBEAT_FILESY(7)