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Re: [PATCH] Bug fix for LVM
From: |
Bean |
Subject: |
Re: [PATCH] Bug fix for LVM |
Date: |
Sun, 19 Jul 2009 17:41:04 +0800 |
On Sun, Jul 19, 2009 at 4:05 AM, Robert Millan<address@hidden> wrote:
> On Sat, Jul 18, 2009 at 09:59:55PM +0200, Vladimir 'phcoder' Serbinenko wrote:
>> On Sat, Jul 18, 2009 at 9:43 PM, Bean<address@hidden> wrote:
>> > On Sun, Jul 19, 2009 at 3:11 AM, Robert Millan<address@hidden> wrote:
>> >> On Sat, Jul 18, 2009 at 10:11:19PM +0800, Bean wrote:
>> >>> }
>> >>>
>> >>> grub_raid_rescan ();
>> >>> + grub_lvm_fini ();
>> >>> + grub_lvm_init ();
>> >>
>> >> This is aside from this patch, but I don't see the purpose of this
>> >> grub_raid_rescan() function. It's in raid.mod but only used by
>> >> grub-fstest, so at least it should be #ifdef'ed out, but looking at
>> >> what it does, it seems very ad-hoc. It basically amounts to the
>> >> same you're doing with grub_lvm_fini() and grub_lvm_init(). Could
>> >> you fix this while at it?
>> >
>> > This is required. As raid and lvm scan device in init function, but
>> > grub-fstest uses loopback device, which hasn't been setup in
>> > grub_init_all. This code rescan raid and lvm, otherwise there won't be
>> > available.
>> >
>> This situation isn't strictly speaking restricted to grub-fstest then.
>> One would sensibly want to loopmount lvm image in grub shell. Is there
>> a way to do it cleanly?
>
> I think a good long-term solution is to move the scan function from
> grub_raid_init() to wheereever appropiate to make the scan happen
> dynamically everytime e.g. the iterate() function is called. However,
> doing this efficiently needs some work.
Hi,
I've come up an alternative solution to grub_raid_rescan, we can use
the same trick as lvm, call fini and then init function, this would
have the same effect of rescanning. Now that grub_raid_rescan is gone,
I can simply raid.c further by moving grub_raid_scan_device into
grub_raid_register.
As for dynamically scanning, I think it's not common to mount lvm/raid
in loopback files, we could just ignore it for now.
--
Bean
lvm_2.diff
Description: Text Data
- [PATCH] Bug fix for LVM, Bean, 2009/07/18
- Re: [PATCH] Bug fix for LVM, Robert Millan, 2009/07/18
- Re: [PATCH] Bug fix for LVM, Bean, 2009/07/18
- Re: [PATCH] Bug fix for LVM, Robert Millan, 2009/07/18
- Re: [PATCH] Bug fix for LVM, Vladimir 'phcoder' Serbinenko, 2009/07/18
- Re: [PATCH] Bug fix for LVM, Robert Millan, 2009/07/18
- Re: [PATCH] Bug fix for LVM,
Bean <=
- Re: [PATCH] Bug fix for LVM, Robert Millan, 2009/07/22
- Re: [PATCH] Bug fix for LVM, Robert Millan, 2009/07/22
- Re: [PATCH] Bug fix for LVM, Bean, 2009/07/22
- Re: [PATCH] Bug fix for LVM, Robert Millan, 2009/07/25
Re: [PATCH] Bug fix for LVM, Patrik Horník, 2009/07/19