5e5578134f
Add service parameter to enable multiple iSCSI multipath:
system service-parameter-add cinder DEFAULT multipath=true
system service-parameter-apply cinder
Add Puppet manifests for multipathd service.
When multipath service parameter is enabled then controller
and compute nodes go into config out-of-date status. They
need to be locked/unlocked to apply the new configuration:
1. cinder.conf (only for controllers)
[DEFAULT]
use_multipath_for_image_xfer=true
[backend_defaults]
use_multipath_for_image_xfer=true
Note:
a. enforce_multipath_for_image_xfer option is not set
to allow fallback to single path in case multipathd
service is not available
2. load dm_multipath kernel module
3. multipath.conf
defaults {
user_friendly_names yes
find_multipaths yes
}
blacklist {
device {
vendor "*"
}
}
blacklist_exceptions {
property "(SCSI_IDENT_|ID_WWN)"
device {
vendor "3PARdata"
}
}
Notes:
a. multipath support is enabled only for hpe3par
iSCSI devices by:
- blacklisting devices from all vendors
- blacklisting all devices that do not
have ID_WWN or SCSI_IDENT_ udev entries
(see multipath.conf manual page)
- making an exception for 3PARdata vendor
b. multipath service is managed by systemd
Story: 2002996
Task: 27040
Change-Id: Ib34d4542f93e78a507073f43808658be2b9fc87d
Signed-off-by: Daniel Badea <daniel.badea@windriver.com>
18 lines
225 B
Plaintext
18 lines
225 B
Plaintext
defaults {
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user_friendly_names yes
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find_multipaths yes
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}
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blacklist {
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device {
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vendor "*"
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}
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}
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blacklist_exceptions {
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property "(SCSI_IDENT_|ID_WWN)"
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device {
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vendor "3PARdata"
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}
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}
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