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ae65c908b7
https://bugzilla.redhat.com/show_bug.cgi?id=1356436 According to RFC 3721 (https://www.ietf.org/rfc/rfc3721.txt), there are two ways to "discover" targets in/for the iSCSI environment. Discovery is the process which allows the initiator to find the targets to which it has access and at least one address at which each target may be accessed. The method currently implemented in libvirt using the virISCSIScanTargets API is known as "SendTargets" discovery. This method is more useful when the target IP Address and TCP port information are available, e.g. in libvirt terms the "portal". It returns a list of targets for the portal. From that list, the target can be found. This operation can also fill an iSCSI node table into which iSCSI logins may occur. Commit id '56057900' altered that filling by adding the "--op nonpersistent" since it was not necessarily desired to perform that for non libvirt related targets. The second method is "Static Configuration". This method not only needs the IP Address and TCP port (e.g. portal), but also the iSCSI target name. In libvirt terms this would be the device path field from the iSCSI pool <source> XML. This patch implements the second methodology using that required device path as the targetname.
70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/*
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* viriscsi.h: helper APIs for managing iSCSI
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*
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* Copyright (C) 2014 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef __VIR_ISCSI_H__
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# define __VIR_ISCSI_H__
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# include "internal.h"
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char *
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virISCSIGetSession(const char *devpath,
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bool probe)
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ATTRIBUTE_NONNULL(1);
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int
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virISCSIConnectionLogin(const char *portal,
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const char *initiatoriqn,
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const char *target)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3)
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ATTRIBUTE_RETURN_CHECK;
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int
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virISCSIConnectionLogout(const char *portal,
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const char *initiatoriqn,
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const char *target)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3)
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ATTRIBUTE_RETURN_CHECK;
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int
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virISCSIRescanLUNs(const char *session)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int
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virISCSIScanTargets(const char *portal,
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size_t *ntargetsret,
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char ***targetsret)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int
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virISCSINodeNew(const char *portal,
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const char *target)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2)
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ATTRIBUTE_RETURN_CHECK;
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int
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virISCSINodeUpdate(const char *portal,
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const char *target,
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const char *name,
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const char *value)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
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ATTRIBUTE_NONNULL(4) ATTRIBUTE_RETURN_CHECK;
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#endif
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