Add a couple of iscsi patches to the storage backend; without these two

patches, iscsi storage support is incomplete (and won't work properly).

libvirt-iscsi-sysfs4.patch

@@ -0,0 +1,146 @@
+--- a/src/storage_backend_iscsi.c	4 Mar 2008 20:02:34 -0000	1.3
++++ b/src/storage_backend_iscsi.c	26 Mar 2008 22:07:05 -0000
+@@ -170,20 +170,91 @@
+ virStorageBackendISCSIMakeLUN(virConnectPtr conn,
+                               virStoragePoolObjPtr pool,
+                               char **const groups,
+-                              void *data ATTRIBUTE_UNUSED)
++                              void *data)
+ {
+     virStorageVolDefPtr vol;
+     int fd = -1;
++    unsigned int target, channel, id, lun;
+     char lunid[100];
+-    char *dev = groups[4];
+     int opentries = 0;
+     char *devpath = NULL;
++    char *session = data;
++    char sysfs_path[PATH_MAX];
++    char *dev = NULL;
++    DIR *sysdir;
++    struct dirent *block_dirent;
++    struct stat sbuf;
++    int len;
++
++    if ((virStrToLong_ui(groups[0], NULL, 10, &target) < 0) ||
++        (virStrToLong_ui(groups[1], NULL, 10, &channel) < 0) ||
++        (virStrToLong_ui(groups[2], NULL, 10, &id) < 0) ||
++        (virStrToLong_ui(groups[3], NULL, 10, &lun) < 0)) {
++        virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR, "%s",
++                              _("Failed parsing iscsiadm commands"));
++        return -1;
++    }
++
++    if (lun == 0) {
++        /* the 0'th LUN isn't a real LUN, it's just a control LUN; skip it */
++        return 0;
++    }
++
++    snprintf(sysfs_path, PATH_MAX,
++             "/sys/class/iscsi_session/session%s/device/"
++             "target%d:%d:%d/%d:%d:%d:%d/block",
++             session, target, channel, id, target, channel, id, lun);
++
++    if (stat(sysfs_path, &sbuf) < 0) {
++        /* block path in subdir didn't exist; this is unexpected, so fail */
++        virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR,
++                              _("Failed to find the sysfs path for %d:%d:%d:%d: %s"),
++                              target, channel, id, lun, strerror(errno));
++        return -1;
++    }
++
++    sysdir = opendir(sysfs_path);
++    if (sysdir == NULL) {
++        /* we failed for some reason; return an error */
++        virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR,
++                              _("Failed to opendir sysfs path %s: %s"),
++                              sysfs_path, strerror(errno));
++        return -1;
++    }
++
++    while ((block_dirent = readdir(sysdir)) != NULL) {
++        len = strlen(block_dirent->d_name);
++        if ((len == 1 && block_dirent->d_name[0] == '.') ||
++            (len == 2 && block_dirent->d_name[0] == '.' && block_dirent->d_name[1] == '.')) {
++            /* the . and .. directories; just skip them */
++            continue;
++        }
++
++        /* OK, not . or ..; let's see if it is a SCSI device */
++        if (len > 2 &&
++            block_dirent->d_name[0] == 's' &&
++            block_dirent->d_name[1] == 'd') {
++            /* looks like a scsi device, smells like scsi device; it must be
++               a scsi device */
++            dev = strdup(block_dirent->d_name);
++            break;
++        }
++    }
++    closedir(sysdir);
++
++    if (dev == NULL) {
++        /* we didn't find the sd? device we were looking for; fail */
++        virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR,
++                              _("Failed to find SCSI device for %d:%d:%d:%d: %s"),
++                              target, channel, id, lun, strerror(errno));
++        return -1;
++    }
+ 
+     snprintf(lunid, sizeof(lunid)-1, "lun-%s", groups[3]);
+ 
+     if ((vol = calloc(1, sizeof(virStorageVolDef))) == NULL) {
+         virStorageReportError(conn, VIR_ERR_NO_MEMORY, "%s", _("volume"));
+-        return -1;
++        goto cleanup;
+     }
+ 
+     if ((vol->name = strdup(lunid)) == NULL) {
+@@ -197,6 +268,8 @@
+     }
+     strcpy(devpath, "/dev/");
+     strcat(devpath, dev);
++    free(dev);
++    dev = NULL;
+     /* It can take a little while between logging into the ISCSI
+      * server and udev creating the /dev nodes, so if we get ENOENT
+      * we must retry a few times - they should eventually appear.
+@@ -258,6 +331,7 @@
+     if (fd != -1) close(fd);
+     free(devpath);
+     virStorageVolDefFree(vol);
++    free(dev);
+     return -1;
+ }
+ 
+@@ -281,14 +355,13 @@
+      *           scsi1 Channel 00 Id 0 Lun: 5
+      *                   Attached scsi disk sdg          State: running
+      *
+-     * Need 2 regex to match alternating lines
++     * Need a regex to match the Channel:Id:Lun lines
+      */
+     const char *regexes[] = {
+-        "^\\s*scsi(\\S+)\\s+Channel\\s+(\\S+)\\s+Id\\s+(\\S+)\\s+Lun:\\s+(\\S+)\\s*$",
+-        "^\\s*Attached\\s+scsi\\s+disk\\s+(\\S+)\\s+State:\\s+running\\s*$"
++        "^\\s*scsi(\\S+)\\s+Channel\\s+(\\S+)\\s+Id\\s+(\\S+)\\s+Lun:\\s+(\\S+)\\s*$"
+     };
+     int vars[] = {
+-        4, 1
++        4
+     };
+     const char *prog[] = {
+         ISCSIADM, "--mode", "session", "-r", session, "-P", "3", NULL,
+@@ -296,11 +369,11 @@
+ 
+     return virStorageBackendRunProgRegex(conn, pool,
+                                          prog,
+-                                         2,
++                                         1,
+                                          regexes,
+                                          vars,
+                                          virStorageBackendISCSIMakeLUN,
+-                                         NULL);
++                                         (void *)session);
+ }
+ 
+ 

libvirt-storage-api-iscsi-sendtarget.patch

@@ -0,0 +1,17 @@
+--- /home/boston/clalance/devel/libvirt--devel/src/storage_backend_iscsi.c	2008-02-13 13:48:32.497466000 -0500
++++ libvirt-0.4.0/src/storage_backend_iscsi.c	2008-02-11 17:19:35.000000000 -0500
+@@ -143,6 +143,14 @@ static int virStorageBackendISCSIConnect
+         "--targetname", pool->def->source.devices[0].path, action, NULL
+     };
+ 
++    const char *cmdsendtarget[] = {
++        ISCSIADM, "--mode", "discovery", "--type", "sendtargets",
++        "--portal", portal, NULL
++    };
++
++    if (virRun(conn, (char **)cmdsendtarget, NULL) < 0)
++        return -1;
++
+     if (virRun(conn, (char **)cmdargv, NULL) < 0)
+         return -1;
+ 

libvirt.spec

@@ -21,7 +21,7 @@
 Summary: Library providing a simple API virtualization
 Name: libvirt
 Version: 0.4.1
-Release: 4%{?dist}%{?extra_release}
+Release: 5%{?dist}%{?extra_release}
 License: LGPL
 Group: Development/Libraries
 Source: libvirt-%{version}.tar.gz
@@ -31,6 +31,8 @@ Patch2: %{name}-%{version}-daemon-startup.patch
 Patch3: %{name}-%{version}-qemu-media-change.patch
 Patch4: %{name}-%{version}-xen-boot-device.patch
 Patch5: %{name}-%{version}-tap-ifname.patch
+Patch6: libvirt-storage-api-iscsi-sendtarget.patch 
+Patch7: libvirt-iscsi-sysfs4.patch 
 BuildRoot: %{_tmppath}/%{name}-%{version}-root
 URL: http://libvirt.org/
 BuildRequires: python python-devel
@@ -148,6 +150,8 @@ of recent versions of Linux (and other OSes).
 %patch3 -p1
 %patch4 -p1
 %patch5 -p1
+%patch6 -p1
+%patch7 -p1
 
 %build
 # Xen is available only on i386 x86_64 ia64
@@ -291,6 +295,11 @@ fi
 %doc docs/examples/python
 
 %changelog
+* Thu Mar 27 2008 Chris Lalancette <clalance@redhat.com> - 0.4.1-5.fc9
+- Do iscsiadm sendtarget before trying to do login
+- Do sysfs scanning for iSCSI LUNs instead of trying to parse them from
+  iscsiadm session output
+
 * Thu Mar 13 2008 Daniel P. Berrange <berrange@redhat.com> - 0.4.1-4.fc9
 - Fix QEMU tap device setup
 - Fix Xen boot device XML processing