Re: Swap Bug Massive EXT3 Corruption on FC4 with 2.6.14 update

[jmerkey <jmerkey@soleranetworks.com>]

jmerkey wrote:

> Alan Cox wrote:
>
>> On Iau, 2005-11-17 at 11:05 -0700, jmerkey wrote:
>>  
>>
>>> To reproduce, install FC2 on an /dev/hda device with defaults, then 
>>> install FC4 on a /dev/hdb device, build the 2.6.14 update for
>>> FC4 and watch your data disappear.
>>>   
>>
>>
>> Should be reported in the FC bugzilla although I've not been able to
>> reproduce it.
>>
>>
>>  
>>
>
> Alan,
>
> I'll report over there.  I reproduced it with an install of Suse 10.0 
> and FC4 and got to the bottom of it.  During install of FC4, anaconda 
> allocates
> the swap partitions assigned to Suse 10.0 on /dev/hda (or any swap 
> partitions on the primary drive) for use during the install.  After 
> the install
> completes, FC4 uses this LABEL-SWAP-hda2 (etc.) method for determining 
> which partitions to use for swap.  What happened here it turned
> out was not related to swap extents, but misidentifcation of which 
> partition was assigned this LABEL-XXX tag.  Upon first boot of FC4,
> it allocated /dev/hda6 (the / partitition) as swap and started 
> swapping to the / partition for Suse 10.0.  I first saw it when I 
> installed FC4 on a system
> with FC2.  After FC2 / partition got trashed, I reinstalled with Suse 
> 10.0 (since I am porting DSFS to all of these distributions) and then 
> reinstalled
> FC4 on /dev/hdb -- same thing happened again.
> I just finished reinstalling Suse 10.0 and tried with FC2 on 
> /dev/hdb.  FC2 does the same thing and gets mixed on on Swap on the 
> /dev/hda device, but this time, it did not corrupt the Suse 10.0 on 
> /dev/hda.  This appears to be a bug in anaconda and the setup for the 
> FCX distributions.  ES and AS probably do the same thing since they 
> use anaconda, so I would have someone look into this.
>
> Jeff
>
NOTE;  One this that's unique in this case is that after I instal DSFS 
rpms, I remove these LABEL-XXX constructs from the grub.conf and 
/etc/fstab files and use the actual device names /dev/hdX.  It seems 
related to removing these labels in a running distribution.

Jeff