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Diffstat (limited to 'README')
| -rw-r--r-- | README | 43 |
1 files changed, 2 insertions, 41 deletions
@@ -89,8 +89,7 @@ clusters generated by autocluster. If you're still running RHEL5.4, you have lots of time, you have lots of disk space, and you like complexity, then see the - sections below on "iSCSI shared disks" and "Raw IDE system - disks". :-) + section below on "Raw IDE system disks". :-) * Fedora @@ -433,7 +432,7 @@ Keep it simple * The NODES configuration variable controls the types of nodes that are created. At the time of writing, the default value is: - NODES="nas:0-3 rhel_base:4" + NODES="nas:0-3 base:4" This means that you get 4 clustered NAS nodes, at IP offsets 0, 1, 2, & 3 from FIRSTIP, all part of the CTDB cluster. You also get an @@ -455,39 +454,6 @@ the system disk, try using IDE system disks: SYSTEM_DISK_TYPE=ide -iSCSI shared disks -================== - -The RHEL5 version of KVM does not support the SCSI block device -emulation. Therefore, you can use either virtio or iSCSI shared -disks. Unfortunately, in RHEL5.4 and early versions of RHEL5.5, -virtio block devices are not supported by the version of multipath in -RHEL5. So this leaves iSCSI as the only choice. - -The main configuration options you need for iSCSI disks are: - - SHARED_DISK_TYPE=iscsi - NICMODEL=virtio # Recommended for performance - add_extra_package iscsi-initiator-utils - -Note that SHARED_DISK_PREFIX and SHARED_DISK_CACHE are ignored for -iSCSI shared disks because KVM doesn't (need to) know about them. - -You will need to install the scsi-target-utils package on the host -system. After creating a cluster, autocluster will print a message -that points you to a file tmp/iscsi.$CLUSTER - you need to run the -commands in this file (probably via: sh tmp/iscsi.$CLUSTER) before -booting your cluster. This will remove any old target with the same -ID, and create the new target, LUNs and ACLs. - -You can use the following command to list information about the -target: - - tgtadm --lld iscsi --mode target --op show - -If you need multiple clusters using iSCSI on the same host then each -cluster will need to have a different setting for ISCSI_TID. - Raw IDE system disks ==================== @@ -520,11 +486,6 @@ need these settings: SYSTEM_DISK_FORMAT=raw BASE_FORMAT=raw -Note that if you're testing cluster creation with iSCSI shared disks -then you should find a way of switching off raw disks. This avoids -every iSCSI glitch costing you a lot of time while raw disks are -copied. - DEVELOPMENT HINTS ================= |