Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-17 Thread Stefan G. Weichinger
Am 2015-03-13 um 15:11 schrieb Neil Bothwick: On Fri, 13 Mar 2015 14:55:27 +0100, Stefan G. Weichinger wrote: See above. The reason for using a RAID1 array is to avoid having to update multiple disks, just mount /boot on the RAID device. % mount | grep boot /dev/md0 on /boot type ext2

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-13 Thread Stefan G. Weichinger
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 12.03.2015 19:52, Stefan G. Weichinger wrote: On 12.03.2015 18:28, Neil Bothwick wrote: On Thu, 12 Mar 2015 18:12:06 +0100, Stefan G. Weichinger wrote: c) Create a 4 disk RAID1 array consisting of sda2 and 3 missing disks. Then add sdb2,

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-13 Thread Neil Bothwick
On Fri, 13 Mar 2015 09:38:15 +0100, Stefan G. Weichinger wrote: c) Create a 4 disk RAID1 array consisting of sda2 and 3 missing disks. Then add sdb2, sdc2, sdd2 in turn and the contents of sda2 will be replicated to them. the

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-13 Thread Neil Bothwick
On Fri, 13 Mar 2015 14:55:27 +0100, Stefan G. Weichinger wrote: See above. The reason for using a RAID1 array is to avoid having to update multiple disks, just mount /boot on the RAID device. % mount | grep boot /dev/md0 on /boot type ext2 (rw,noatime,stripe=4) /boot is my vfat

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-13 Thread Stefan G. Weichinger
Am 2015-03-13 um 09:59 schrieb Neil Bothwick: See above. The reason for using a RAID1 array is to avoid having to update multiple disks, just mount /boot on the RAID device. % mount | grep boot /dev/md0 on /boot type ext2 (rw,noatime,stripe=4) /boot is my vfat ESP here .. no ext2 ...

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-12 Thread Stefan G. Weichinger
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 11.03.2015 23:32, Neil Bothwick wrote: On Wed, 11 Mar 2015 23:14:49 +0100, Stefan G. Weichinger wrote: Am 11.03.2015 um 17:06 schrieb Neil Bothwick: So RAID1 with vfat as ESP ? That's how I'd do it. I have /boot on RAID1 on this box

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-12 Thread Stefan G. Weichinger
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 12.03.2015 17:48, Neil Bothwick wrote: c) Create a 4 disk RAID1 array consisting of sda2 and 3 missing disks. Then add sdb2, sdc2, sdd2 in turn and the contents of sda2 will be replicated to them. the array formatted as vfat (- ESP) ? will

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-12 Thread Neil Bothwick
On Thu, 12 Mar 2015 18:12:06 +0100, Stefan G. Weichinger wrote: c) Create a 4 disk RAID1 array consisting of sda2 and 3 missing disks. Then add sdb2, sdc2, sdd2 in turn and the contents of sda2 will be replicated to them. the array formatted as vfat (- ESP) ? sda2 is already formatted

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-12 Thread Neil Bothwick
On Thu, 12 Mar 2015 12:30:45 +0100, Stefan G. Weichinger wrote: I now have a dedicated ESP on /dev/sda2 (non-RAID) and it boots via gummiboot (- UEFI). I now wonder if I could (a) create a RAID1 over /dev/sd[abcd]2 and format it as vfat ESP or (b) clone /dev/sda2 - format each

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-12 Thread Stefan G. Weichinger
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 12.03.2015 18:28, Neil Bothwick wrote: On Thu, 12 Mar 2015 18:12:06 +0100, Stefan G. Weichinger wrote: c) Create a 4 disk RAID1 array consisting of sda2 and 3 missing disks. Then add sdb2, sdc2, sdd2 in turn and the contents of sda2 will be

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-11 Thread Stefan G. Weichinger
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 11.03.2015 12:09, Neil Bothwick wrote: Then I spent some hours fiddling with grub2, gummiboot et al to get that box booting up fine. dracut doesn't assemble the rootfs-raid etc etc ... - fun I found this with a LUKS root filesystem, dracut

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-11 Thread Neil Bothwick
On Wed, 11 Mar 2015 16:52:27 +0100, Stefan G. Weichinger wrote: I generally set up boot on a RAID1 across all disks. You can still access individual disks in a RAID1 array, so you can set your computer to boot from sda1 then sda2 etc but mount /boot on the array, so all updates are

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-11 Thread Neil Bothwick
On Wed, 11 Mar 2015 23:14:49 +0100, Stefan G. Weichinger wrote: Am 11.03.2015 um 17:06 schrieb Neil Bothwick: So RAID1 with vfat as ESP ? That's how I'd do it. I have /boot on RAID1 on this box (but not as FAT and it's a BIOS motherboard) with everything else on a btrfs RAID and

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-11 Thread Stefan G. Weichinger
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Am 11.03.2015 um 17:06 schrieb Neil Bothwick: So RAID1 with vfat as ESP ? That's how I'd do it. I have /boot on RAID1 on this box (but not as FAT and it's a BIOS motherboard) with everything else on a btrfs RAID and it works well. I will

Re: [gentoo-user] best practise for 4 disks ... redundancy

2015-03-11 Thread Neil Bothwick
On Wed, 11 Mar 2015 07:45:54 +0100, Stefan G. Weichinger wrote: yesterday I received a shiny new server for a client. It brings 4 x 1 TB SATA disks, is capable of UEFI and I started setting it up. GPT partitioning, small partition(s) for the ESP, some swap, and bigger partitions of type

[gentoo-user] best practise for 4 disks ... redundancy

2015-03-11 Thread Stefan G. Weichinger
greetings again yesterday I received a shiny new server for a client. It brings 4 x 1 TB SATA disks, is capable of UEFI and I started setting it up. GPT partitioning, small partition(s) for the ESP, some swap, and bigger partitions of type fd=raid for creating 2 mdadm-raids (rootfs and data)