Booting off of RAID10 versus RAID1
After recent issues discovered with RAID1 and failing disks, I am contemplating alternatives to ensure more reliability.
The question that arises: Is there any way to boot a system from a RAID10 md?
Signature · 1 line
Regards, Maurice
I'm pretty sure you can't put the kernel on a raid 10, but you can have a 50-100MB RAID1 (or not raid) /boot partition (on each hdd if you wish) and then have root on raid 10 provided you compile in support for it or use a initrd. I have used this setup successfully without the kernel raid 10 support (older linux distro). I just have a raid 0 on top of three raid 1's that auto assemble the raid 1's upon boot but then have to manually assemble the raid 0 since the boot-up procedure only does one round of raid auto-detecting.
Just required this little hack in menu.lst
title Default kernel - build2
root (hd0,0)
kernel /kernel-build2 root=/dev/md4 md=4,/dev/md1,/dev/md2,/dev/md3
Just a trick I used, makes some great vm and/or db servers. Cheers,
- A
Quoted 3 lines · Maurice Hilarius
After recent issues discovered with RAID1 and failing disks, I am contemplating alternatives to ensure more reliability.
The question that arises: Is there any way to boot a system from a RAID10 md?
Quoted 5 lines · Maurice Hilarius
After recent issues discovered with RAID1 and failing disks, I am contemplating alternatives to ensure more reliability.
The question that arises: Is there any way to boot a system from a RAID10 md?
I believe you can boot off a raid10,n2 array.
best regards
keld
Quoted 8 lines · Keld Jørn Simonsen
Quoted 5 lines · Maurice Hilarius
After recent issues discovered with RAID1 and failing disks, I am contemplating alternatives to ensure more reliability.
The question that arises: Is there any way to boot a system from a RAID10 md?
I believe you can boot off a raid10,n2 array.
You should also be able to boot off a raid5 array with 2 disks!
Best regards
keld
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Quoted 5 lines · Maurice Hilarius
After recent issues discovered with RAID1 and failing disks, I am contemplating alternatives to ensure more reliability.
The question that arises: Is there any way to boot a system from a RAID10 md?
I've been wondering about booting grub/initrd from a flash USB stick (industrial quality if needed).
David
Quoted 5 lines · David Greaves
Quoted 3 lines · Maurice Hilarius
After recent issues discovered with RAID1 and failing disks, I am contemplating alternatives to ensure more reliability.
Quoted 7 lines
Quoted 3 lines
The question that arises: Is there any way to boot a system from a RAID10 md?
I've been wondering about booting grub/initrd from a flash USB stick (industrial quality if needed).
Not needed, you won't be writing it often (I hope!), so just the MBR and /boot can go on that device.
Signature · 3 lines
Bill Davidsen <[email protected]> "Woe unto the statesman who makes war without a reason that will still be valid when the war is over..." Otto von Bismark