Hi,
We have some QEMU virtual machines that go randomly into read-only state
where the ext4 filesystem aborts with:
ext4_mb_generate_buddy:757: group X, block bitmap and bg descriptor
inconsistent: Y vs 32768 free clusters
I know this has been discussed extensively already in the past e.g.
https://bugzilla.kernel.org/show_bug.cgi?id=102731
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=818502
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1423672
Now the difference with those reports and our case is that the last
number of the inconsistency (grp->bb_free) is *always* 32768 + We're
sure the proposed patch is applied on both host & guest.
Is there anyone that can provide some insights in what /might/ be going
on? E.g. what does this error actually mean and/or why it would always
be exactly 32768?
It think it's unlikely something is wrong in the ext4 code - I'm just
trying to reproduce the problem so we can figure out what's going on here.
My apologies if this does not belong on this list.
Thanks,
Geert
