On 12/12/15 19:14, Pádraig Brady wrote:
> On 12/12/15 13:04, Pascal wrote:
>> hi,
>> tail reports this on a particular file :
>>
>> tail: unrecognized file system type 0x794c7630 for '/var/log/xxx.log'. please report this to bug-coreutils@gnu.org <mailto:bug-coreutils@gnu.org>. reverting to polling
>>
>> the file system used is :
>>
>> /dev/loop0 /run/archiso/sfs/airootfs squashfs ro,relatime 0 0
>> airootfs / overlay rw,relatime,lowerdir=/run/archiso/sfs/airootfs,upperdir=/run/archiso/cowspace/persistent_live/x86_64/upperdir,workdir=/run/archiso/cowspace/persistent_live/x86_64/workdir 0 0
>>
>> this is a live cd of archlinux build with archiso.
>>
>> regards, lacsaP.
> 
> Interesting. I see that the following is not defined
> in the standard linux/magic.h location:
> #define OVERLAYFS_SUPER_MAGIC 0x794c7630
> 
> I'll fix that up, and see if there is a handy way
> to identify other MAGIC values in the kernel.

Patch attached.

thanks,
Pádraig