> Yes, the xino is stored on the /cow. I think other things > are probably using /cow as well since *any* modified files > are automatically put on the /cow.
Actually, if you remounted the aufs root / as ro, then nothing else has write access to your /cow any longer EXPECT the aufs (due to xino). So please first try to mount aufs with the xino option, to ensure xino file is NOT on your /cow you can do it this way: mkdir /memory mount -t tmpfs tmpfs /memory mount -t aufs -o xino=/memory/xino ...etc (I don't remember current aufs mount options) // add branches here etc Then when you remount, do as you did: mount -o remount,ro / #set all aufs branches as readonly (I don't remember command for that) #mount -o remount,ro /cow > Maybe after setting / > to (ro), I should attempt to disable the xino file somehow? nope, that's not possible. You must put the xino file to another filesystem (eg to memory, as explained above) during you INITIALIZE your aufs root (eg at the boot time) > The /cow is definitely in use... use 'lsof' command to see what files are opened then... Tomas M slax.org ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/