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On 9 Aug 2015 17:15, "Jeremi Piotrowski" <jeremi.piotrowski@×××××.com> |
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wrote: |
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> |
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> On Wed, Jul 29, 2015 at 12:53 PM, Bruce Schultz <brulzki@×××××.com> wrote: |
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> > On 29 July 2015 6:18:43 AM AEST, Neil Bothwick <neil@××××××××××.uk> |
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wrote: |
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> >> On Wed, 29 Jul 2015 05:29:18 +1000, Bruce Schultz wrote: |
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> >>> But I think you do if your btrfs is raid 1. The kernel can't mount |
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> >>> multidisk btrfs until it done a btrfs device scan in userspace, run |
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> >>> from initramfs. |
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> >> |
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> >> According to the btrfs wiki you can pass |
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> >> device=/dev/sda1,device=/dev/sdb1 on the kernel boot line. |
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> > |
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> > I'd forgotten that option. Btrfs wiki also says this though: |
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> > |
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> > "Using device is not recommended, as it is sensitive to device names |
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> > changing. You should really be using a initramfs. Most modern |
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distributions |
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> > will do this for you automatically if you install their own btrfs-progs |
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> > package." |
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> |
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> I was wondering if *anyone* has actually seen this work. I'm referring to |
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> booting a raid1 btrfs volume without performing a user-space device scan, |
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> using only the kernel `rootflags=device` setting. I have been struggling |
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with |
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> this in various settings and am slowly starting to believe that this |
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scenario |
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> is simply broken. |
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|
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It works, but a patched kernel is needed. Take a look at |
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https://forums.gentoo.org/viewtopic-p-7275724.html The patch there was |
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still working on the latest kernel a while ago. I used it on 2 of my |
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systems, but I moved on and now using dracut everywhere. |
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