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#1 2021-05-04 23:08:11

vibrion
Member
From: Argentina
Registered: 2021-05-04
Posts: 2
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Xen domU on BTRFs configuration problem

Hi!,I' ve installed succesfully ARCH on a xeon server with BTRFS as main filesystem. Also xen is working (xen-git) but I cannot figure out the right way to add a DomU on btrfs. I' ve tried phy: on a subvolume without success. I understand that a subvol is not a block device. Is there a way to pass to xen_domu.cfg to use it?. I know I can use a raw disk image but i prefer not (i have another server with xen+lvm volume groups and everything works fine). Can this be achieved with btrfs/subvolumes?
Thanks in advance Martin

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#2 2021-05-15 00:37:22

wallphoenix
Member
Registered: 2021-05-13
Posts: 1

Re: Xen domU on BTRFs configuration problem

I'm still looking into this myself, but on the xl.cfg(5) man page: http://xenbits.xen.org/docs/4.9-testing … cfg.5.html, under Direct Kernel Boot, it looks like you can use a regular "root=" line that could include the "subvolume=" option, if I understand it right.

When I try it, I will report back.

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#3 2022-01-11 12:15:57

_pheinrich_
Member
Registered: 2014-05-26
Posts: 53

Re: Xen domU on BTRFs configuration problem

Hey I need to setup the same, any progress in using the `Direct Kernel Boot` ?

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