share/examples/rconfig/hammer_lvm_stripe.sh

   1 #!/bin/sh
   2 #
   3 # This script takes in account a disk list to make a lvm(8) stripe
   4 # which will contain a hammer filesystem and the swap partition.
   5 #
   6 # Be aware that this is just to provide _basic_ installation
   7 # functionalities and it may need actions from the sysadmin to
   8 # properly install and get a consistent installed system.
   9
  10 # set -x
  11
  12 export LVM_SUPPRESS_FD_WARNINGS=1
  13
  14 disklist="da0 da1"
  15 bootdisk=""
  16 logfile="/tmp/hammer_lvm_stripe.log"
  17
  18 #
  19 # err exitval message
  20 #     Display an error and exit
  21 #
  22 err()
  23 {
  24     exitval=$1
  25     shift
  26
  27     echo 1>&2 "$0: ERROR: $*"
  28     exit $exitval
  29 }
  30
  31 #
  32 # cktmpdir
  33 #
  34 #     Checks whether /tmp is writeable.
  35 #     Exit if not
  36 #
  37 cktmpdir()
  38 {
  39     mktemp "/tmp/XXX" >> ${logfile} 2>&1
  40
  41     if [ $? -ne 0 ]; then
  42         err 1 "/tmp directory must be writeable"
  43     fi
  44 }
  45
  46 #
  47 # ckpreinstall
  48 #
  49 #     Checks whether lv nodes exist which would may
  50 #     indicate an installation already succeeded or
  51 #     a previous failed one.
  52 #
  53 ckpreinstall()
  54 {
  55
  56     # Try to activate the volume first
  57     vgchange -a y main >> ${logfile} 2>&1
  58
  59     if [ -c /dev/mapper/main-lv_root -o -c /dev/mapper/main-lv_swap ]; then
  60         echo " ERROR: Either a previous installation failed or your installation"
  61         echo " is already done. If the former, please follow instructions below."
  62         echo ""
  63
  64         lvmexit
  65     fi
  66 }
  67
  68
  69 #
  70 # ckstatus status progname
  71 #
  72 #     Checks exit status of programs and if it fails
  73 #     it exists with a message
  74 #
  75 ckstatus()
  76 {
  77     local st=$1
  78     local prog=$2
  79
  80     if [ ${st} -ne 0 ]; then
  81         err 1 "Failed to run $2. Check ${logfile}"
  82     fi
  83 }
  84
  85 #
  86 # ckloadmod modname
  87 #
  88 #     Checks if a module is loaded, if not
  89 #     it tries to load it. In case of failure
  90 #     it exits
  91 #
  92 ckloadmod()
  93 {
  94     local mod=$1
  95
  96     if ! kldstat -q -m ${mod}; then
  97         kldload $1 >> ${logfile} 2>&1
  98
  99         if [ $? -ne 0 ]; then
 100             err 1 "Could not load ${mod}"
 101         fi
 102     fi
 103 }
 104
 105 #
 106 # prepdisk disk
 107 #
 108 #     Clears the first sectors of the disk
 109 #     and then prepares the disk for disklabel.
 110 #     It also installs bootblocks in the first
 111 #     disk of the list.
 112 #
 113 prepdisk()
 114 {
 115     local disk=$1
 116
 117     # Hey don't shoot yourself in the foot
 118     if [ ! "$disk" = "" ]; then
 119         mount | fgrep ${disk} >> ${logfile} 2>&1
 120
 121         if [ $? -ne 1 ]; then
 122             err 1 "${disk} is already being used, aborting"
 123         fi
 124     fi
 125
 126     if [ "${bootdisk}" = "" ]; then
 127         bootdisk=${disk}
 128     fi
 129
 130     dd if=/dev/zero of=/dev/${disk} bs=32k count=16 >> ${logfile} 2>&1
 131     ckstatus $? "dd"
 132
 133     fdisk -IB ${disk} >> ${logfile} 2>&1
 134     ckstatus $? "fdisk"
 135
 136     disklabel -r -w ${disk}s1 >> ${logfile} 2>&1
 137     ckstatus $? "disklabel"
 138
 139     if [ ! "${bootdisk}" = "" ]; then
 140         disklabel -B ${disk}s1 >> ${logfile} 2>&1
 141         ckstatus $? "disklabel"
 142     fi
 143 }
 144
 145 #
 146 # mklabel disk
 147 #
 148 #     Create same labels for every disk
 149 #     except for the disk that will contain
 150 #     /boot partition
 151 #
 152 mklabel()
 153 {
 154     local disk=$1
 155
 156     disklabel ${disk}s1 > /tmp/label
 157     ckstatus $? "disklabel"
 158
 159     if [ "${disk}" = "${bootdisk}" ]; then
 160         cat >> /tmp/label <<EOF
 161  a: 768m 0 4.2BSD
 162  d: * * unknown
 163 EOF
 164     else
 165         cat >> /tmp/label <<EOF
 166  d: * * unknown
 167 EOF
 168
 169     fi
 170
 171     disklabel -R ${disk}s1 /tmp/label >> ${logfile} 2>&1
 172     ckstatus $? "disklabel"
 173 }
 174
 175
 176 #
 177 # lvmexit
 178 #
 179 #     lvm exit message
 180 lvmexit()
 181 {
 182     local status=$1
 183
 184     if [ $# -ne 0 ]; then
 185         if [ ${status} -eq 0 ]; then
 186             return
 187         fi
 188     fi
 189
 190     echo " There was an error during or after LVM operations for this"
 191     echo " installation and those operations done cannot be reverted"
 192     echo " by the script itself. Please revert them manually:"
 193     echo ""
 194     echo " Basically you need to perform these steps:"
 195     echo "   1. Remove all logical volumes in VG main (lv_swap, lv_root)"
 196     echo "   2. Remove main volume group"
 197     echo "   3. Remove all the physical volumes. PVs are all in [disk]1d"
 198     echo "      For example, if you have 2 disks, you need to remove:"
 199     echo "        /sbin/pvremove /dev/da0s1d"
 200     echo "        /sbin/pvremove /dev/da1s1d"
 201     echo ""
 202     exit 1
 203 }
 204
 205 #
 206 # rev_lvmops
 207 #
 208 #     Revert all lvmops
 209 #
 210 rev_lvmops()
 211 {
 212
 213     vgchange -a n main >> ${logfile} 2>&1
 214
 215     lvremove --force lv_swap main >> ${logfile} 2>&1
 216     if [ $? -ne 0 ]; then
 217         lvmexit
 218     fi
 219
 220     lvremove --force lv_root main >> ${logfile} 2>&1
 221     if [ $? -ne 0 ]; then
 222         lvmexit
 223     fi
 224
 225     vgremove --force main >> ${logfile} 2>&1
 226     if [ $? -ne 0 ]; then
 227         lvmexit
 228     fi
 229
 230     for disk in ${disklist}
 231     do
 232         pvremove /dev/${disk}s1d >> ${logfile} 2>&1
 233     done
 234 }
 235
 236 #
 237 # lvmops
 238 #
 239 #     Create physical volumes, volume group 'main' and
 240 #     the ROOT hammer filesystem where everything will
 241 #     be installed. swap is also created as a log. volume.
 242 #
 243 lvmops()
 244 {
 245     local lst=""
 246     local tmp=""
 247
 248     for disk in ${disklist}
 249     do
 250         pvcreate /dev/${disk}s1d >> ${logfile} 2>&1
 251         if [ $? -ne 0 ]; then
 252             rev_lvmops
 253         fi
 254         tmp=${lst}
 255         lst="${tmp} /dev/${disk}s1d"
 256
 257         # Be safe
 258         sync
 259         sleep 1
 260     done
 261
 262     # Do a full scan in the hope the lvm
 263     # cache is rebuilt
 264     pvscan >> ${logfile} 2>&1
 265
 266     vgcreate main ${lst} >> ${logfile} 2>&1
 267     if [ $? -ne 0 ]; then
 268         rev_lvmops
 269     fi
 270
 271     # We need to sync and wait for some secs to settle
 272     # Otherwise /dev/main won't appear
 273     echo "     Settling LVM operations (5 secs)"
 274     sync
 275     sleep 5
 276     vgscan >> ${logfile} 2>&1
 277
 278     lvcreate -Z n -n lv_swap -L ${memtotal} main >> ${logfile} 2>&1
 279     if [ $? -ne 0 ]; then
 280         rev_lvmops
 281     fi
 282
 283     # We sync in every lvm operation
 284     sync
 285     lvscan >> ${logfile} 2>&1
 286     sleep 1
 287
 288     lvcreate -Z n -n lv_root -l 100%FREE main >> ${logfile} 2>&1
 289     if [ $? -ne 0 ]; then
 290         rev_lvmops
 291     fi
 292
 293 }
 294
 295 echo "ALL DATA IN DISKS ${disklist} WILL BE LOST!"
 296 echo "Press ^C to abort."
 297 for n in 10 9 8 7 6 5 4 3 2 1
 298 do
 299     echo -n " ${n}"
 300     sleep 1
 301 done
 302 echo ""
 303
 304 # /tmp has to be writeable
 305 echo "* Checking /tmp is writeable"
 306 cktmpdir
 307
 308 rm "${logfile}" >> ${logfile} 2>&1
 309 echo "* Output to ${logfile}"
 310
 311 # calculate memory
 312 tmp=`sysctl hw.physmem | cut -w -f 2`
 313 memtotal=`expr ${tmp} / 1024 / 1024`
 314
 315 # kldload needed modules and start udevd
 316 echo "* Loading modules"
 317 ckloadmod dm_target_striped >> ${logfile} 2>&1
 318 ckloadmod dm_target_linear >> ${logfile} 2>&1
 319 /sbin/udevd >> ${logfile} 2>&1
 320
 321 # check previous installations
 322 ckpreinstall
 323
 324 # Unmount any prior mounts on /mnt, reverse order to unwind
 325 # sub-directory mounts.
 326 #
 327 for mount in `df | fgrep /mnt | awk '{ print $6; }' | tail -r`
 328 do
 329     echo " Umounting ${mount}"
 330     umount ${mount} >> ${logfile} 2>&1
 331 done
 332
 333 # Prepare the disks in the list
 334 for disk in ${disklist}
 335 do
 336     echo "* Preparing disk ${disk}"
 337     prepdisk ${disk}
 338     mklabel ${disk}
 339     pvscan >> ${logfile} 2>&1
 340 done
 341
 342 # lvm(8) operations in the disks
 343 echo "* Performing LVM operations"
 344 lvmops
 345
 346 # Format the volumes
 347 echo "* Formatting ${bootdisk} and LVs lv_root"
 348 newfs /dev/${bootdisk}s1a >> ${logfile} 2>&1
 349 lvmexit $?
 350
 351 newfs_hammer -f -L ROOT /dev/main/lv_root >> ${logfile} 2>&1
 352 lvmexit $?
 353
 354 # Mount it
 355 #
 356 echo "* Mounting everything"
 357 mount_hammer /dev/main/lv_root /mnt >> ${logfile} 2>&1
 358 lvmexit $?
 359
 360 mkdir /mnt/boot
 361
 362 mount /dev/${bootdisk}s1a /mnt/boot >> ${logfile} 2>&1
 363 lvmexit $?
 364
 365 # Create PFS mount points for nullfs.
 366 pfslist="usr usr.obj var var.crash var.tmp tmp home"
 367
 368 mkdir /mnt/pfs
 369
 370 for pfs in ${pfslist}
 371 do
 372     hammer pfs-master /mnt/pfs/$pfs >> ${logfile} 2>&1
 373     lvmexit $?
 374 done
 375
 376 # Mount /usr and /var so that you can add subdirs
 377 mkdir /mnt/usr >> ${logfile} 2>&1
 378 mkdir /mnt/var >> ${logfile} 2>&1
 379 mount_null /mnt/pfs/usr /mnt/usr >> ${logfile} 2>&1
 380 lvmexit $?
 381
 382 mount_null /mnt/pfs/var /mnt/var >> ${logfile} 2>&1
 383 lvmexit $?
 384
 385 mkdir /mnt/usr/obj >> ${logfile} 2>&1
 386 mkdir /mnt/var/tmp >> ${logfile} 2>&1
 387 mkdir /mnt/var/crash >> ${logfile} 2>&1
 388
 389 mkdir /mnt/tmp >> ${logfile} 2>&1
 390 mkdir /mnt/home >> ${logfile} 2>&1
 391
 392 mount_null /mnt/pfs/tmp /mnt/tmp >> ${logfile} 2>&1
 393 lvmexit $?
 394
 395 mount_null /mnt/pfs/home /mnt/home >> ${logfile} 2>&1
 396 lvmexit $?
 397
 398 mount_null /mnt/pfs/var.tmp /mnt/var/tmp >> ${logfile} 2>&1
 399 lvmexit $?
 400
 401 mount_null /mnt/pfs/var.crash /mnt/var/crash >> ${logfile} 2>&1
 402 lvmexit $?
 403
 404 mount_null /mnt/pfs/usr.obj /mnt/usr/obj >> ${logfile} 2>&1
 405 lvmexit $?
 406
 407 chmod 1777 /mnt/tmp >> ${logfile} 2>&1
 408 chmod 1777 /mnt/var/tmp >> ${logfile} 2>&1
 409
 410 # Install the system from the live CD
 411 #
 412 echo "* Starting file copy"
 413 cpdup -vv -o / /mnt >> ${logfile} 2>&1
 414 lvmexit $?
 415
 416 cpdup -vv -o /boot /mnt/boot >> ${logfile} 2>&1
 417 lvmexit $?
 418
 419 cpdup -vv -o /usr /mnt/usr >> ${logfile} 2>&1
 420 lvmexit $?
 421
 422 cpdup -vv -o /var /mnt/var >> ${logfile} 2>&1
 423 lvmexit $?
 424
 425 cpdup -vv -i0 /etc.hdd /mnt/etc >> ${logfile} 2>&1
 426 lvmexit $?
 427
 428 chflags -R nohistory /mnt/tmp >> ${logfile} 2>&1
 429 chflags -R nohistory /mnt/var/tmp >> ${logfile} 2>&1
 430 chflags -R nohistory /mnt/var/crash >> ${logfile} 2>&1
 431 chflags -R nohistory /mnt/usr/obj >> ${logfile} 2>&1
 432
 433 echo "* Adapting fstab and loader.conf"
 434 cat > /mnt/etc/fstab << EOF
 435 # Device                Mountpoint      FStype  Options         Dump    Pass#
 436 /dev/main/lv_root       /               hammer  rw              1       1
 437 /dev/${bootdisk}s1a     /boot           ufs     rw              1       1
 438 /dev/main/lv_swap       none            swap    sw              0       0
 439 /pfs/usr                /usr            null    rw              0       0
 440 /pfs/var                /var            null    rw              0       0
 441 /pfs/tmp                /tmp            null    rw              0       0
 442 /pfs/home               /home           null    rw              0       0
 443 /pfs/var.tmp            /var/tmp        null    rw              0       0
 444 /pfs/usr.obj            /usr/obj        null    rw              0       0
 445 /pfs/var.crash          /var/crash      null    rw              0       0
 446 proc                    /proc           procfs  rw              0       0
 447 EOF
 448
 449 # Because root is not on the boot partition we have to tell the loader
 450 # to tell the kernel where root is.
 451 #
 452 cat > /mnt/boot/loader.conf << EOF
 453 dm_target_striped_load="YES"
 454 dm_target_linear_load="YES"
 455 initrd.img_load="YES"
 456 initrd.img_type="md_image"
 457 vfs.root.mountfrom="ufs:md0s0"
 458 vfs.root.realroot="local:hammer:/dev/main/lv_root"
 459 EOF
 460
 461 # Setup interface, configuration, sshd
 462 #
 463 echo "* iface setup"
 464 ifc=`route -n get default | fgrep interface | awk '{ print $2; }'`
 465 ip=`ifconfig $ifc | fgrep inet | fgrep -v inet6 | awk '{ print $2; }'`
 466 lip=`echo $ip | awk -F . '{ print $4; }'`
 467
 468 echo -n "ifconfig_$ifc=" >> /mnt/etc/rc.conf
 469 echo '"DHCP"' >> /mnt/etc/rc.conf
 470 cat >> /mnt/etc/rc.conf << EOF
 471 sshd_enable="YES"
 472 dntpd_enable="YES"
 473 hostname="test$lip.MYDOMAIN.XXX"
 474 dumpdev="/dev/main/lv_swap"
 475 EOF
 476
 477 # Misc sysctls
 478 #
 479 cat >> /mnt/etc/sysctl.conf << EOF
 480 #net.inet.ip.portrange.first=4000
 481 EOF
 482
 483 # mkinitd image
 484 echo "* Preparing initrd image"
 485 /sbin/mkinitrd -b /mnt/boot >> ${logfile} 2>&1
 486
 487 # Warn about ssh
 488 echo ""
 489 echo "Warning:"
 490 echo "chroot now to /mnt and change root password and also edit"
 491 echo "/mnt/etc/ssh/sshd_config to allow root login and authentication"
 492 echo "using passwords. Alternatively, you can also just copy your"
 493 echo "~/.ssh/authorized_keys file to allow login using your ssh keys."
 494
 495 echo "Installation finished successfully."
 496
 497
 498 # take CD out and reboot
 499 #