linux user group brescia

L'avevo visto ma non avevo letto i commenti a fine pagina! grazie.
Ora studio e riprovo, ci sarà sicuramente un passaggio mancante nel mio 
howto!


Il 14/05/2014 00:32, Marco Manenti ha scritto:

>   * EL MARCONI <http://-/>
>   *   23.03.14
>     <http://dominicpratt.de/proxmox-ve-3-0-software-raid/#comment-669>
> *
>
> Combined effort of:
> http://dominicpratt.de/proxmox-ve-3-0-software-raid/
> http://dominicpratt.de/proxmox-ve-3-0-software-raid/#comment-447
>
> For the latest ProxMox3.2 install on a DL120 G7 with SoftRAID.
>
> Installed first only on /dev/sda. Wanted conversion to RAID1.
> No idea what causes the shift in partition numbering, but found out the
> hard way that there is one additional /dev/?d?1 of 1024K in front of the
> /boot (/dev/sda2) en / (/dev/sda3) partition. Combined this with the
> sgdisk instead of the sfdisk and we now have a working system 2 x 1 Tb RAID:
>
> root a proxmox2:~# sgdisk -R=/dev/sdb /dev/sda
> The operation has completed successfully.
>
> root a proxmox2:~# sgdisk -G /dev/sdb
> The operation has completed successfully.
>
> root a proxmox2:~# sgdisk -t 2:fd00 /dev/sdb
> Warning: The kernel is still using the old partition table.
> The new table will be used at the next reboot.
> The operation has completed successfully.
>
> root a proxmox2:~# sgdisk -t 3:fd00 /dev/sdb
> Warning: The kernel is still using the old partition table.
> The new table will be used at the next reboot.
> The operation has completed successfully.
>
> root a proxmox2:~# sgdisk -p /dev/sdb
> Disk /dev/sdb: 1953525168 sectors, 931.5 GiB
> Logical sector size: 512 bytes
> Disk identifier (GUID): 8E3763E8-A40E-435F-BD72-4D8B11D0ECD8
> Partition table holds up to 128 entries
> First usable sector is 34, last usable sector is 1953525134
> Partitions will be aligned on 2048-sector boundaries
> Total free space is 3437 sectors (1.7 MiB)
>
> Number Start (sector) End (sector) Size Code Name
> 1 2048 4095 1024.0 KiB EF02 primary
> 2 4096 1048575 510.0 MiB FD00 primary
> 3 1048576 1953523711 931.0 GiB FD00 primary
>
> root a proxmox2:~# sgdisk -p /dev/sda
> Disk /dev/sda: 1953525168 sectors, 931.5 GiB
> Logical sector size: 512 bytes
> Disk identifier (GUID): E93C25C7-BC3F-4B43-A03E-1E16DB180D75
> Partition table holds up to 128 entries
> First usable sector is 34, last usable sector is 1953525134
> Partitions will be aligned on 2048-sector boundaries
> Total free space is 3437 sectors (1.7 MiB)
>
> Number Start (sector) End (sector) Size Code Name
> 1 2048 4095 1024.0 KiB EF02 primary
> 2 4096 1048575 510.0 MiB EF00 primary
> 3 1048576 1953523711 931.0 GiB 8E00 primary
>
> root a proxmox2:~# mdadm –create /dev/md0 –level=1 –raid-disks=2 missing
> /dev/sdb2
> mdadm: Note: this array has metadata at the start and
> may not be suitable as a boot device. If you plan to
> store ‘/boot’ on this device please ensure that
> your boot-loader understands md/v1.x metadata, or use
> –metadata=0.90
> Continue creating array? y
> mdadm: Defaulting to version 1.2 metadata
> mdadm: array /dev/md0 started.
> root a proxmox2:~# mdadm –create /dev/md1 –level=1 –raid-disks=2 missing
> /dev/sdb3
> mdadm: Note: this array has metadata at the start and
> may not be suitable as a boot device. If you plan to
> store ‘/boot’ on this device please ensure that
> your boot-loader understands md/v1.x metadata, or use
> –metadata=0.90
> Continue creating array? y
> mdadm: Defaulting to version 1.2 metadata
> mdadm: array /dev/md1 started.
>
> root a proxmox2:~# cat /proc/mdstat
> Personalities : [raid1]
> md1 : active raid1 sdb3[1]
> 976106304 blocks super 1.2 [2/1] [_U]
>
> md0 : active raid1 sdb2[1]
> 521920 blocks super 1.2 [2/1] [_U]
>
> unused devices:
>
> root a proxmox2:~# cat /etc/fstab
> #
> /dev/pve/root / ext3 errors=remount-ro 0 1
> /dev/pve/data /var/lib/vz ext3 defaults 0 1
> #UUID=044b28d5-190e-4acd-8684-9157b09d2a9e /boot ext3 defaults 0 1
> /dev/md0 /boot ext3 defaults 0 1
> /dev/pve/swap none swap sw 0 0
> proc /proc proc defaults 0 0
>
> #Rebooted with manual intervention, fsck /dev/mapper/pve-root
> #Rebooted with manual intervention, fsck /dev/mapper/pve-data
>
> echo “GRUB_DISABLE_LINUX_UUID=true” >> /etc/default/grub
> echo “GRUB_PRELOAD_MODULES=””raid dmraid” >> /etc/default/grub
> echo raid1 >> /etc/modules
> echo raid1 >> /etc/initramfs-tools/modules
> grub-install /dev/sda
> grub-install /dev/sdb
> # grub-install /dev/md0
> update-grub
> update-initramfs -u
>
> root a proxmox2:~# sgdisk -t 2:fd00 /dev/sda
> Warning: The kernel is still using the old partition table.
> The new table will be used at the next reboot.
> The operation has completed successfully.
>
> root a proxmox2:~# mdadm –add /dev/md0 /dev/sda2
> mdadm: added /dev/sda2
> root a proxmox2:~# cat /proc/mdstat
> Personalities : [raid1]
> md0 : active raid1 sda2[2] sdb2[1]
> 521920 blocks super 1.2 [2/1] [_U]
> [=============>.......] recovery = 66.8% (349376/521920) finish=0.0min
> speed=58229K/sec
>
> md1 : active (auto-read-only) raid1 sdb3[1]
> 976106304 blocks super 1.2 [2/1] [_U]
>
> unused devices:
> root a proxmox2:~# cat /proc/mdstat
> Personalities : [raid1]
> md0 : active raid1 sda2[2] sdb2[1]
> 521920 blocks super 1.2 [2/2] [UU]
>
> md1 : active (auto-read-only) raid1 sdb3[1]
> 976106304 blocks super 1.2 [2/1] [_U]
>
> unused devices:
>
> root a proxmox2:~# apt-get install screen
> Reading package lists… Done
> Building dependency tree
> Reading state information… Done
> Suggested packages:
> iselect screenie byobu
> The following NEW packages will be installed:
> screen
> 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
> Need to get 670 kB of archives.
> After this operation, 975 kB of additional disk space will be used.
> Get:1 http://ftp.nl.debian.org/debian/ wheezy/main screen amd64
> 4.1.0~20120320gitdb59704-7 [670 kB]
> Fetched 670 kB in 1s (613 kB/s)
> Selecting previously unselected package screen.
> (Reading database … 42449 files and directories currently installed.)
> Unpacking screen (from …/screen_4.1.0~20120320gitdb59704-7_amd64.deb) …
> Processing triggers for install-info …
> Processing triggers for man-db …
> Setting up screen (4.1.0~20120320gitdb59704-7) …
>
> pvcreate /dev/md1
> vgextend pve /dev/md1
> pvmove /dev/sda3 /dev/md1
>
>> /dev/sda3: Moved: 29.3%
>> /dev/sda3: Moved: 29.5%
>> /dev/sda3: Moved: 29.6%
>> /dev/sda3: Moved: 29.8%
>
>> /dev/sda3: Moved: 99.5%
>> /dev/sda3: Moved: 99.6%
>> /dev/sda3: Moved: 99.7%
>> /dev/sda3: Moved: 99.8%
>> /dev/sda3: Moved: 99.9%
>> /dev/sda3: Moved: 100.0%
>> /dev/sda3: Moved: 100.0%
>
> root a proxmox2:~# vgreduce pve /dev/sda3
> Removed “/dev/sda3″ from volume group “pve”
> root a proxmox2:~# pvremove /dev/sda3
> Labels on physical volume “/dev/sda3″ successfully wiped
> root a proxmox2:~# sgdisk -t 3:fd00 /dev/sda
> Warning: The kernel is still using the old partition table.
> The new table will be used at the next reboot.
> The operation has completed successfully.
> root a proxmox2:~# mdadm –add /dev/md1 /dev/sda3
> mdadm: added /dev/sda3
>
> echo 80000 >/proc/sys/dev/raid/speed_limit_max
>
> root a proxmox2:~# cat /proc/mdstat
> Personalities : [raid1]
> md0 : active raid1 sda2[2] sdb2[1]
> 521920 blocks super 1.2 [2/2] [UU]
>
> md1 : active raid1 sda3[2] sdb3[1]
> 976106304 blocks super 1.2 [2/1] [_U]
> [>....................] recovery = 0.0% (417408/976106304)
> finish=233.7min speed=69568K/sec
>
> unused devices:
>
> Personalities : [raid1]
> md0 : active raid1 sda2[2] sdb2[1]
> 521920 blocks super 1.2 [2/2] [UU]
>
> md1 : active raid1 sda3[2] sdb3[1]
> 976106304 blocks super 1.2 [2/1] [_U]
> [===============>.....] recovery = 79.2% (773717568/976106304)
> finish=66.0min speed=51049K/sec
>
> unused devices:
>
> root a proxmox2:~# cat /proc/mdstat
> Personalities : [raid1]
> md1 : active raid1 sda3[2] sdb3[1]
> 976106304 blocks super 1.2 [2/2] [UU]
>
> md0 : active raid1 sda2[2] sdb2[1]
> 521920 blocks super 1.2 [2/2] [UU]
>
> unused devices:
>
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