> The OP was just showing a test case. On a real system your HA software
> would exchange a heartbeat and not do a double import. The problem with
> zfs is that after the original system fails and the second system imports
> the pool, the original system also tries to import on [re]boot, and the OP
> didn't know how to disable this.
Ok, I see. I don't think he showed that because he didn't mention a reboot.
If you *never* want to import a pool automatically on reboot you just have to
delete the /etc/zfs/zpool.cache file before the zfs module is being loaded.
This could be integrated into SMF.
ZFS should normally be loaded during svc:/system/filesystem/local. Just create
a service with filesystem/local as a dependent which removes
/etc/zfs/zpool.cache.
Like:
/lib/svc/method/zpool-clear
#!/sbin/sh
. /lib/svc/share/smf_include.sh
/usr/bin/rm -f /etc/zfs/zpool.cache
exit $SMF_EXIT_OK
/var/svc/manifest/system/zpool-clear.xml
<?xml version="1.0"?>
<!DOCTYPE service_bundle SYSTEM "/usr/share/lib/xml/dtd/service_bundle.dtd.1">
<service_bundle type='manifest' name='none:zpool-clear'>
<service
name='system/zpool/clear'
type='service'
version='1'>
<create_default_instance enabled='true' />
<single_instance/>
<dependency
name='usr'
grouping='require_all'
restart_on='none'
type='service'>
<service_fmri value='svc:/system/filesystem/usr' />
</dependency>
<dependent
name='fs-local'
grouping='require_all'
restart_on='none'>
<service_fmri value='svc:/system/filesystem/local' />
</dependent>
<exec_method
type='method'
name='start'
exec='/lib/svc/method/zpool-clear'
timeout_seconds='0' />
<exec_method
type='method'
name='stop'
exec=':true'
timeout_seconds='0' />
<property_group name='startd' type='framework'>
<propval name='duration' type='astring' value='transient' />
</property_group>
<template>
<common_name>
<loctext xml:lang='C'>
Clears the zpool cache file
</loctext>
</common_name>
</template>
</service>
</service_bundle>
(sorry for the poor formating but this !$&%()# web interface is driving me nuts)
Then do a "svccfg import /var/svc/manifest/system/zpool-clear.xml". Now
/etc/zfs/zpool.cache should disappear on each reboot before the zfs module is
loaded.
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