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[IMP] In some case, we might want to keep some lvm active #420

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[IMP] In some case, we might want to keep some lvm active #420

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4 changes: 4 additions & 0 deletions lib/vdsm/common/config.py.in
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Original file line number Diff line number Diff line change
Expand Up @@ -481,6 +481,10 @@ parameters = [
'are either "filter" or "devices". Filter method will use LVM '
'filter, while device will use LVM devices file. The default '
'value is "devices".'),

('keep_active', '',
'Comma-separated list of LVM paths that will never be deactivated.'
'For instance: "/dev/vg1/lv1,/dev/vg1/lv2,..."'),
]),

# Section: [sanlock]
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6 changes: 6 additions & 0 deletions lib/vdsm/storage/lvm.py
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Expand Up @@ -240,6 +240,9 @@ def __getattr__(self, attrName):

USE_DEVICES = config.get("lvm", "config_method").lower() == "devices"

KEEPACTIVE = [lvm for lvm in config.get("lvm", "keep_active").split(",")
if lvm is not None]


def _get_lvm_version():
packages = osinfo.package_versions()
Expand Down Expand Up @@ -1174,6 +1177,9 @@ def deactivateUnusedLVs(vgname, skiplvs=()):
elif lv.opened:
log.debug("Skipping open lv: vg=%s lv=%s", vgname,
lv.name)
elif lvPath(vgname, lv.name) in KEEPACTIVE:
log.debug("Skipping KEEPACTIVE lv: vg=%s lv=%s", vgname,
lv.name)
else:
deactivate.append(lv.name)

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