Messages in this thread | | | Date | Wed, 13 Apr 2011 10:10:06 -0400 | From | Mark Lord <> | Subject | Re: CONFIG_EXT4_USE_FOR_EXT23: rootfs shows as ext2 instead of ext4 |
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On 11-04-12 08:49 PM, Ted Ts'o wrote: > On Tue, Apr 12, 2011 at 01:25:08PM -0400, Mark Lord wrote: >> Ted et al. >> >> I've only just noticed this, so I have no idea how long it has been this way. >> >> When I build a kernel with CONFIG_EXT4_USE_FOR_EXT23=y and boot from it, >> the ext4 root filesystem shows up as "ext2" mode, rather than "ext4". >> >> This looks very wrong to me, and quite dangerous. > > It's a cosemtic bug, I agree, but I'm not sure why you consider it > dangerous.
It is dangerous if it really has mounted an ext4 as ext2; the on-disk formats are not 100% compatible.
I don't know what it is doing, so it looks quite dangerous. Perhaps it really did mount as ext4 though, in which case not.
Thanks.
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