139 lines
5.9 KiB
Diff
139 lines
5.9 KiB
Diff
diff -aurp open-iscsi-2.0-872-rc4-bnx2i/README open-iscsi-2.0-872-rc4-bnx2i.work/README
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--- open-iscsi-2.0-872-rc4-bnx2i/README 2011-01-31 03:10:47.000000000 -0600
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+++ open-iscsi-2.0-872-rc4-bnx2i.work/README 2011-01-31 06:36:18.000000000 -0600
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@@ -403,8 +403,9 @@ this the following is not needed for sof
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Warning!!!!!!
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This feature is experimental. The interface may change. When reporting
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bugs, if you cannot do a "ping -I ethX target_portal", then check your
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-network settings first. If you cannot ping the portal, then you will
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-not be able to bind a session to a NIC.
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+network settings first. Make sure the rp_filter setting is set to 0 or 2
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+(see Prep section below for more info). If you cannot ping the portal,
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+then you will not be able to bind a session to a NIC.
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What is a scsi_host and iface for software, hardware and partial
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offload iscsi?
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@@ -422,6 +423,32 @@ structure. For each HBA port or for soft
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device (ethX) or NIC, that you wish to bind sessions to you must create
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a iface config /var/lib/iscsi/ifaces.
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+Prep:
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+
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+The iface binding feature requires the sysctl setting
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+net.ipv4.conf.default.rp_filter to be set to 0 or 2. This can be set
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+in /etc/sysctl.conf by having the line:
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+
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+net.ipv4.conf.default.rp_filter = N
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+
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+where N is 0 or 2. Note that when setting this you may have to reboot
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+the box for the value to take effect.
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+
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+
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+rp_filter information from Documentation/networking/ip-sysctl.txt:
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+
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+rp_filter - INTEGER
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+ 0 - No source validation.
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+ 1 - Strict mode as defined in RFC3704 Strict Reverse Path
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+ Each incoming packet is tested against the FIB and if the interface
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+ is not the best reverse path the packet check will fail.
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+ By default failed packets are discarded.
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+ 2 - Loose mode as defined in RFC3704 Loose Reverse Path
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+ Each incoming packet's source address is also tested against the FIB
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+ and if the source address is not reachable via any interface
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+ the packet check will fail.
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+
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+
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Running:
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# iscsiadm -m iface
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diff -aurp open-iscsi-2.0-872-rc4-bnx2i/usr/initiator.c open-iscsi-2.0-872-rc4-bnx2i.work/usr/initiator.c
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--- open-iscsi-2.0-872-rc4-bnx2i/usr/initiator.c 2011-01-31 06:23:53.000000000 -0600
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+++ open-iscsi-2.0-872-rc4-bnx2i.work/usr/initiator.c 2011-01-31 06:36:18.000000000 -0600
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@@ -670,11 +670,11 @@ session_conn_reopen(iscsi_conn_t *conn,
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static int iscsi_retry_initial_login(struct iscsi_conn *conn)
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{
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+ struct iscsi_session *session = conn->session;
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int initial_login_retry_max;
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struct timeval now, timeout, fail_time;
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- initial_login_retry_max =
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- conn->session->nrec.session.initial_login_retry_max;
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+ initial_login_retry_max = session->nrec.session.initial_login_retry_max;
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memset(&now, 0, sizeof(now));
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memset(&timeout, 0, sizeof(timeout));
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@@ -684,7 +684,7 @@ static int iscsi_retry_initial_login(str
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if (gettimeofday(&now, NULL)) {
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log_error("Could not get time of day. Dropping down to "
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"max retry check.\n");
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- return initial_login_retry_max > conn->session->reopen_cnt;
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+ return initial_login_retry_max > session->reopen_cnt;
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}
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timeradd(&conn->initial_connect_time, &timeout, &fail_time);
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@@ -693,9 +693,13 @@ static int iscsi_retry_initial_login(str
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* then it is time to give up
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*/
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if (timercmp(&now, &fail_time, >)) {
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- log_debug(1, "Giving up on initial login attempt after "
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- "%u seconds.\n",
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- initial_login_retry_max * conn->login_timeout);
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+ log_error("Login timed out. Could not login to [target: %s, "
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+ "portal: %s,%d] through [iface: %s].",
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+ session->nrec.name,
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+ session->nrec.conn[conn->id].address,
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+ session->nrec.conn[conn->id].port,
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+ session->nrec.iface.name);
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+ iscsi_warn_on_iface_cfg(&conn->session->nrec);
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return 0;
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}
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diff -aurp open-iscsi-2.0-872-rc4-bnx2i/usr/iscsi_util.c open-iscsi-2.0-872-rc4-bnx2i.work/usr/iscsi_util.c
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--- open-iscsi-2.0-872-rc4-bnx2i/usr/iscsi_util.c 2011-01-31 03:10:47.000000000 -0600
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+++ open-iscsi-2.0-872-rc4-bnx2i.work/usr/iscsi_util.c 2011-01-31 06:36:18.000000000 -0600
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@@ -259,3 +259,16 @@ int iscsi_match_session(void *data, stru
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info->persistent_address,
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info->persistent_port, &info->iface);
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}
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+
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+void iscsi_warn_on_iface_cfg(struct node_rec *rec)
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+{
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+ if (strcmp(rec->iface.name, DEFAULT_IFACENAME) &&
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+ !strcmp(rec->iface.transport_name, DEFAULT_TRANSPORT) &&
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+ (iface_is_bound_by_hwaddr(&rec->iface) ||
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+ iface_is_bound_by_netdev(&rec->iface)))
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+ log_error("Make sure you can ping the portal with "
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+ "'ping -I ethX IP', and try adjusting "
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+ "net.ipv4.conf.default.rp_filter to 2 or 0 "
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+ "in /etc/sysctl.conf (a reboot may be needed "
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+ "after changing the sysctl settings).");
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+}
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diff -aurp open-iscsi-2.0-872-rc4-bnx2i/usr/iscsi_util.h open-iscsi-2.0-872-rc4-bnx2i.work/usr/iscsi_util.h
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--- open-iscsi-2.0-872-rc4-bnx2i/usr/iscsi_util.h 2011-01-31 03:10:47.000000000 -0600
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+++ open-iscsi-2.0-872-rc4-bnx2i.work/usr/iscsi_util.h 2011-01-31 06:36:18.000000000 -0600
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@@ -21,4 +21,6 @@ extern int __iscsi_match_session(struct
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extern char *strstrip(char *s);
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extern char *cfg_get_string_param(char *pathname, const char *key);
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+extern void iscsi_warn_on_iface_cfg(struct node_rec *rec);
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+
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#endif
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diff -aurp open-iscsi-2.0-872-rc4-bnx2i/usr/session_mgmt.c open-iscsi-2.0-872-rc4-bnx2i.work/usr/session_mgmt.c
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--- open-iscsi-2.0-872-rc4-bnx2i/usr/session_mgmt.c 2011-01-31 03:10:47.000000000 -0600
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+++ open-iscsi-2.0-872-rc4-bnx2i.work/usr/session_mgmt.c 2011-01-31 06:36:18.000000000 -0600
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@@ -42,6 +42,13 @@ static void log_login_msg(struct node_re
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rec->name, rec->conn[0].address,
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rec->conn[0].port);
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iscsi_err_print_msg(rc);
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+
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+ /*
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+ * If using iface binding with tcp then warn about
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+ * change in kernel behavior.
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+ */
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+ if (rc == ISCSI_ERR_TRANS_TIMEOUT)
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+ iscsi_warn_on_iface_cfg(rec);
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} else
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log_info("Login to [iface: %s, target: %s, portal: "
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"%s,%d] successful.", rec->iface.name,
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