#11018 NORM 11.2.0-: /bootpart not mounted after activation

[Zarro Boogs per Child]

#11018: /bootpart not mounted after activation
-----------------------+----------------------------------------------------
 Reporter:  dsd        |                 Owner:  dsd          
     Type:  defect     |                Status:  new          
 Priority:  normal     |             Milestone:  11.2.0-final 
Component:  initramfs  |               Version:  not specified
 Keywords:             |           Next_action:  never set    
 Verified:  0          |   Deployment_affected:               
Blockedby:             |              Blocking:               
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 After activating the laptop, it boots directly but /bootpart cannot be
 mounted.
 This is because (in this scenario), /security was mounted off that same
 partition as ext4 by the initramfs, and olpc-configure then tries to mount
 /bootpart as ext2 (via mount, which tries the filesystems listed in
 /etc/filesystems, as ext2 comes first).

 mount returns EBUSY here, thinking that ext2 is different from ext4,
 preventing you from mounting the same partition twice but using 2
 different fs drivers (in this case, the drivers are the same - we build
 the ext4 driver also operating under the ext2 and ext3 names)

 In non-activation boot mode, the runrd initramfs mounts /security as ext2,
 meaning that /bootpart can then also be mounted as ext2 without problem.

 The reason for the difference is that /etc/filesystems is present in the
 activation initramfs (but not the runrd) with contents:
 {{{
 vfat
 ext4
 ext3
 ext2
 }}}

 (purpose: autoload the vfat kernel module when trying to mount usb disks
 looking for lease.sig)

 The /security mount that happens after activation then also uses this
 file, preferring ext4 (because its at the top of the list), leading to the
 described situation.

 This is a regression over 10.1.3. Impact is that olpc-update would get
 confused if being run on a boot when activation has just happened.

-- 
Ticket URL: <http://dev.laptop.org/ticket/11018>
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