97 lines
3.8 KiB
Diff
97 lines
3.8 KiB
Diff
From 4e633572ef8a9b07d1ae1252cf4c2b2daf673998 Mon Sep 17 00:00:00 2001
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From: Mykola Golub <mgolub@suse.com>
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Date: Thu, 3 Feb 2022 18:40:47 +0000
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Subject: [PATCH] disable emulate_legacy_capacity on creating RBD backstore
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When rbd image has object-map feature set, `enable` will fail
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unless emulate_legacy_capacity (default is 1) is set to 0.
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Provide a possibility to disable emulate_legacy_capacity when
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creating backstore (before enabling it) via additional
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disable_emulate_legacy_capacity parameter.
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We might eventually want to merge the rbd support patches into one,
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but right now keeping them separate looks useful for tracking the
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change (feature) added here.
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This patch is for the changes added by "rbd support" patch
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(rbd-support.patch) and thus it is not needed upstream until
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the rbd support is added upstream.
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Eventualy we might want to merge this and "rbd support" patches
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into one. For now it looks useful to keep it separate to track
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the change (feature) added by this patch.
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ceph-iscsi needs this change to support rbd images with
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object-map feature enabled.
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Reviewed-by: David Disseldorp <ddiss@suse.de>
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Signed-off-by: Mykola Golub <mgolub@suse.com>
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---
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rtslib/tcm.py | 16 +++++++++++++---
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1 file changed, 13 insertions(+), 3 deletions(-)
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diff --git a/rtslib/tcm.py b/rtslib/tcm.py
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index d42a78f..3bf599d 100644
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--- a/rtslib/tcm.py
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+++ b/rtslib/tcm.py
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@@ -809,7 +809,8 @@ class RBDStorageObject(StorageObject):
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# RBDStorageObject private stuff
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def __init__(self, name, dev=None, wwn=None, readonly=False,
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- write_back=False, index=None):
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+ write_back=False, index=None,
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+ disable_emulate_legacy_capacity=False):
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'''
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A RBDIOStorageObject can be instantiated in two ways:
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- B{Creation mode}: If I{dev} is specified, the underlying configFS
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@@ -822,6 +823,10 @@ class RBDStorageObject(StorageObject):
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I{name}. The underlying configFS object must already exist in
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that mode, or instantiation will fail.
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+ Note, setting disable_emulate_legacy_capacity to True is dangerous
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+ for any image that has previously been iSCSI exported with
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+ emulate_legacy_capacity enabled.
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+
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@param name: The name of the RBDIOStorageObject.
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@type name: string
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@param dev: The path to the backend rbd device to be used.
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@@ -835,20 +840,23 @@ class RBDStorageObject(StorageObject):
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@type readonly: boolean
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@param write_back: Enable write back cache.
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@type write_back: boolean
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+ @param disable_emulate_legacy_capacity: Disable emulate_legacy_capacity mode.
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+ @type disable_emulate_legacy_capacity: boolean
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@return: A RBDIOStorageObject object.
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'''
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if dev is not None:
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super(RBDStorageObject, self).__init__(name, 'create', index)
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try:
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- self._configure(dev, wwn, readonly)
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+ self._configure(dev, wwn, readonly,
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+ disable_emulate_legacy_capacity)
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except:
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self.delete()
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raise
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else:
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super(RBDStorageObject, self).__init__(name, 'lookup', index)
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- def _configure(self, dev, wwn, readonly):
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+ def _configure(self, dev, wwn, readonly, disable_emulate_legacy_capacity):
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self._check_self()
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if get_blockdev_type(dev) != 0:
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raise RTSLibError("Device %s is not a TYPE_DISK rbd device" % dev)
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@@ -858,6 +866,8 @@ class RBDStorageObject(StorageObject):
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self._set_udev_path(dev)
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self._control("udev_path=%s" % dev)
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self._control("readonly=%d" % readonly)
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+ if disable_emulate_legacy_capacity:
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+ self.set_attribute("emulate_legacy_capacity", 0)
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self._enable()
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super(RBDStorageObject, self)._configure(wwn)
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--
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2.33.1
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