Re: mkinitcpio/fsck.btrfs

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On Thu, Jan 17, 2013 at 1:37 PM, Leonardo Dagnino <leodag.sch@xxxxxxxxx> wrote:
> 2013/1/16 Arno Gaboury <arnaud.gaboury@xxxxxxxxx>
>
>> On 16/01/13||11:22, Tom Gundersen wrote:
>> > Hi Arno,
>> >
>> > On Tue, Jan 15, 2013 at 12:34 PM, Arno Gaboury <arnaud.gaboury@xxxxxxxxx>
>> wrote:
>> > > HOOKS="base udev autodetect block lvm2 filesystems fsck usr usbinput
>> > > shutdown modconf"
>> > >
>> > > When # mkinitcpio, I get this error:
>> > >   -> Running build hook: [fsck]
>> > > ==> ERROR: file not found: `fsck.btrfs'
>> > > ==> WARNING: No fsck helpers found. fsck will not be run on boot.
>> > >
>> > > The initramfs-linux.img is still correct, but I was wondering why this
>> > > error.
>> >
>> > As you correctly observe, there is no fsck.btrfs binary.
>> >
>> > > When reading the /usr/lib/initcpio/install/fsck script, it seems to me
>> > > fsck will add the filesystem name and run
>> > > /usr/bin/fsck.filesystemame.This will of course translate to
>> fsck.btrfs,
>> > > which does not exist. /usr/bin/btrfsck is the correct binary.
>> >
>> > This is not a mistake; the btrfsck binary is not meant to be run
>> > automatically at boot as the other fsck.* helpers, it is only meant to
>> > be used manually to fix problems. btrfs is designed not to need
>> > fsck'ing at boot, but does integrity checking at run-time instead.
>> >
>> > > According to /usr/lib/initcpio/install/btrfs script, the btrfs hook is
>> > > not needed when using udev.
>> > >
>> > > How can I solve this issue? Shall I add the btrfs hook?
>> >
>> > You could add the btrfs hook, but it would not make a difference for
>> > the automatic fsck. What it would give you is the ability to fsck
>> > btrfs manually from the initramfs in case of problems (i.e., in case
>> > root can not be mounted at all).
>> >
>> > HTH,
>> >
>> > Tom
>>
>> Tom,
>>
>> thank you for your clean answer.
>> I will then let this "error", as I understand it is more a "Warning"
>> with no negative impact.
>>
>> Regards.
>>
>
>
> If you want to stop getting that error/warning, you can create fsck.btrfs
> as a symlink to /bin/true (I think).
>
> Regards
> --
> Leonardo Dagnino

Am I mistaken in thinking that if you only have btrfs filesystems on a
machine, then the fsck hook serves no purpose?  Thanks,

=-Jameson


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