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List:       openembedded-core
Subject:    [OE-core] aufs missing in kernel 4.4
From:       bruce.ashfield () gmail ! com (Bruce Ashfield)
Date:       2016-03-31 12:06:33
Message-ID: CADkTA4Nw_y5QLzW14i-dzV2NRdnDV+jGeZv4ocF_zBKx7xmfbA () mail ! gmail ! com
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On Thu, Mar 31, 2016 at 6:31 AM, Hongxu Jia <hongxu.jia at windriver.com>
wrote:

> On 03/31/2016 06:07 PM, Hongxu Jia wrote:
> 
> > Hi Bruce,
> > 
> > In kernel 4.1, it supports aufs:
> > 
> > http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-4.1/tree/fs/aufs?h=standard/base
> >  
> > But it does not exist in kernel 4.4:
> > 
> > http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-4.4/tree/fs?h=standard/base
> > 
> > It caused ISO's rootfs is readonly.
> > 
> > In meta/recipes-core/initrdscripts/files/init-live.sh:
> > -----------------
> > 174     elif grep -q -w "aufs" /proc/filesystems; then
> > 175         union_fs_type="aufs"
> > [snip]
> > 204         "aufs")
> > 205             mkdir -p /rootfs.ro /rootfs.rw
> > 206             if ! mount -n --move $ROOT_MOUNT /rootfs.ro; then
> > 207                 rm -rf /rootfs.ro /rootfs.rw
> > 208                 fatal "Could not move rootfs mount point"
> > 209             else
> > 210                 mount -t tmpfs -o rw,noatime,mode=755 tmpfs /
> > rootfs.rw
> > 211                 mount -t aufs -o "dirs=/rootfs.rw=rw:/rootfs.ro=ro"
> > aufs $ROOT_MOUNT
> > 212                 mkdir -p $ROOT_MOUNT/rootfs.ro $ROOT_MOUNT/rootfs.rw
> > 213                 mount --move /rootfs.ro $ROOT_MOUNT/rootfs.ro
> > 214                 mount --move /rootfs.rw $ROOT_MOUNT/rootfs.rw
> > 215             fi
> > 216             ;;
> > -----------------
> > 
> > Would you please update kernel 4.4 to support aufs?
> > 
> 
> Or with Robert's patch in mailing list also could fix this issue.
> 
> [OE-core] [PATCH 1/1] linux-yocto 4.4: enable overlayfs


If you read that very same thread ... aufs is already planned and queued.
There were
issues upstream that have now been sorted out.

Cheers,

Bruce


> 
> 
> //Hongxu
> 
> 
> 
> > //Hongxu
> > 
> > 
> --
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> Openembedded-core mailing list
> Openembedded-core at lists.openembedded.org
> http://lists.openembedded.org/mailman/listinfo/openembedded-core
> 



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"Thou shalt not follow the NULL pointer, for chaos and madness await thee
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