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ru.linux
- RU.LINUX ---------------------------------------------------------------------
From : Roman Sindarovskiy 2:5020/400 18 Feb 2008 02:42:18
To : Alex Korchmar
Subject : Re: openSUSE 10.2: boot into new install on software RAID failed
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Alex Korchmar wrote:
> а есть сегодня смысл использования md вместо lvm ?
Roman Sindarovskiy wrote:
>хз если честно.
grub не умеет грузить ОС с LVM. В оф. документации про то как это
сделать ничего нет. Hашел только это:
Summer of Code 2006 Ideas for GNU GRUB
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Support for LVM and/or RAID
Implement good support for LVM and RAID. This task can be divided into
parts:
* Recognizing and reading LVM and RAID devices.
* Installing GRUB into an LVM or RAID device.
* Booting from an LVM or RAID device.
The first item is rather trivial. You only need to detect LVM/RAID
devices automatically by using the same technique as Linux does, based
on the signatures of partitions. The second item requires more effort,
because you need to take care of distributed physical disks. For RAID 1
and 5, it is desired to support redundant installations, so that GRUB
can boot even if some disks get broken.
You need to extend the bootstrap code for the third item, so that GRUB
can read data from multiple physical disks when booting up.
Full support for every type of LVM or RAID device is probably too large
a job for a Summer of Code project, but good support for a useful subset
is a reasonable project.
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