Changes between Version 2 and Version 3 of TipAndDoc/HA/NFS

Timestamp:

Mar 24, 2011 6:46:31 PM (14 years ago)

Author:

mitty

Comment:

--

TipAndDoc/HA/NFS

@@ -13 +13 @@
  * Tested with VMware Workstation 7.1.3
 
- == DRBD on LVM with RAID1 ==
+ * see [./log] for verbose log
+
+ = DRBD on LVM with RAID1 =
  * Primary
   * /dev/sd[bc]1 -> /dev/md0 (RAID1)
@@ -67 +69 @@
                               -----------------------
 }}}
+
+ == packages ==
+ * sudo aptitude install -R mdadm
+  * -R が無いと postfix を同時インストールされる
+ * sudo aptitude install lvm2
+ * sudo aptitude install drbd8-utils -R
+  * -R が無いと build-essential 等を同時インストールされる
+
+ == setup block devices ==
+
+ === fdisk ===
+ * mitty@ubuntu-haa:~$ ls -l /dev/sd?
+{{{
+brw-rw---- 1 root disk 8,  0 2011-03-24 17:20 /dev/sda
+brw-rw---- 1 root disk 8, 16 2011-03-24 17:20 /dev/sdb
+brw-rw---- 1 root disk 8, 32 2011-03-24 17:20 /dev/sdc
+}}}
+
+ * mitty@ubuntu-haa:~$ sudo fdisk -u /dev/sdb
+{{{
+
+Command (m for help): n
+Command action
+   e   extended
+   p   primary partition (1-4)
+p
+Partition number (1-4): 1
+First sector (63-4194303, default 63):
+Using default value 63
+Last sector, +sectors or +size{K,M,G} (63-4194303, default 4194303): +2000M
+
+Command (m for help): t
+Selected partition 1
+Hex code (type L to list codes): fd
+Changed system type of partition 1 to fd (Linux raid autodetect)
+
+Command (m for help): p
+
+Disk /dev/sdb: 2147 MB, 2147483648 bytes
+255 heads, 63 sectors/track, 261 cylinders, total 4194304 sectors
+Units = sectors of 1 * 512 = 512 bytes
+Sector size (logical/physical): 512 bytes / 512 bytes
+I/O size (minimum/optimal): 512 bytes / 512 bytes
+Disk identifier: 0x7faa0456
+
+   Device Boot      Start         End      Blocks   Id  System
+/dev/sdb1              63     4096063     2048000+  fd  Linux raid autodetect
+Partition 1 does not end on cylinder boundary.
+
+Command (m for help): w
+The partition table has been altered!
+
+Calling ioctl() to re-read partition table.
+Syncing disks.
+}}}
+  * 同じ容量のHDDでも、メーカによって微妙にサイズが異なることがあるので、交換する際のことを考えるとディスク全体をパーティションに割り当てない方が良い
+ * mitty@ubuntu-haa:~$ sudo fdisk -u /dev/sdb
+{{{
+Disk identifier: 0x509a8b0b
+
+   Device Boot      Start         End      Blocks   Id  System
+/dev/sdc1              63     4096063     2048000+  fd  Linux raid autodetect
+Partition 1 does not end on cylinder boundary.
+}}}
+
+ === mdadm ===
+ * mitty@ubuntu-haa:~$ sudo mdadm --create /dev/md0 -l1 -n2 /dev/sd[bc]1
+{{{
+mdadm: array /dev/md0 started.
+}}}
+
+ * mitty@ubuntu-haa:~$ cat /proc/mdstat
+{{{
+Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
+md0 : active raid1 sdc1[1] sdb1[0]
+      2047936 blocks [2/2] [UU]
+      [>....................]  resync =  0.2% (4160/2047936) finish=8.1min speed=4160K/sec
+
+unused devices: <none>
+}}}
+
+ * mitty@ubuntu-haa:~$ sudo mdadm -D /dev/md0
+  * see [./log#mdadm-Ddevmd0]
+
+ * mitty@ubuntu-haa:~$ sudo mdadm -Es
+{{{
+ARRAY /dev/md0 level=raid1 num-devices=2 UUID=32578407:6f33f50b:893cf340:745f5dce
+}}}
+ * mitty@ubuntu-haa:~$ sudo sh -c "mdadm -Es >> /etc/mdadm/mdadm.conf"
+
+ * mitty@ubuntu-haa:~$ sudo dpkg-reconfigure mdadm
+{{{
+  ┌──────────────────────────┤ Configuring mdadm ├─
+
+(snip)
+}}}
+  * see [./log#dpkg-reconfiguremdadm]
+  * see also wiki:TipAndDoc/RAID#dpkg-reconfiguremdadm
+  * command result
+{{{
+ * Stopping MD monitoring service mdadm --monitor                        [ OK ]
+Generating array device nodes... /var/lib/dpkg/info/mdadm.postinst: line 27: /dev/MAKEDEV: No such file or directory
+failed.
+ Removing any system startup links for /etc/init.d/mdadm-raid ...
+update-initramfs: Generating /boot/initrd.img-2.6.32-30-generic-pae
+update-rc.d: warning: mdadm start runlevel arguments (2 3 4 5) do not match LSB Default-Start values (S)
+update-rc.d: warning: mdadm stop runlevel arguments (0 1 6) do not match LSB Default-Stop values (0 6)
+ * Starting MD monitoring service mdadm --monitor                        [ OK ]
+}}}