Patrick schrieb: > Patrick schrieb: >> Flemming Madsen schrieb: >> >>> Patrick wrote: >>> >>>> But isnt there another way? e.g. copying / mount-moving/binding >>>> real_root to the union or something like that? >>>> >>>> >>> The way i make access to the underlying filesystems is to 'mount -o >>> move' the underlying >>> mount point into the union berfore i chroot into it. >>> >>> In my setup i have in the flash: >>> >>> - A squashfs root filesystem to boot on >>> - A ram filesyatem to pickup writes >>> - A /flash to persist things >>> - The /flash/root directory for patching the squashfs root >>> >>> I have these in /mnt and move them into the union to have access to the >>> underlying >>> filesystems after the chroot >>> >>> Sketchy: Eg. (with unionfs) >>> >>> mount /mnt/ram/ >>> mount /mnt/flash/ >>> mount / /mnt/initroot -o bind >>> >>> mount -t unionfs unionfs /mnt/union -o >>> dirs=/mnt/ram:/mnt/flash/root=ro:/mnt/initroot=ro >>> >>> mount /mnt/flash /mnt/union/mnt/flash -o move >>> mount /mnt/ram /mnt/union/mnt/ram -o move >>> mount /mnt/initroot /mnt/union/mnt/initroot -o move >>> >>> cd /mnt/union >>> chroot . init # Rock & roll >>> >> Heh, thats what I exactly tried myself .. but here it doesnt work . >> none of the mounted filesystems that were moved are accessable / >> viewable in the union later on. >> >> > heh okay, got that one fixed (added some sleep's and seen it was a > typo tho.. now my question is .. your /mnt/ram is tmpfs I guess while > /mnt/flash is where? like where is it actually stored? (only thing I > can imagine is onto the rootfs) > Hmm .. well I think I was wrong with that assumption .. seems as if your /flash is on another partition/device than the rootfs is .. otherwise it wouldnt work, would it since the rootfs is mounted ro .. enlighten me please!
regards, Patrick >> regards, >> Patrick >> >>> ------------------------------------------------------------------------- >>> >>> Take Surveys. Earn Cash. Influence the Future of IT >>> Join SourceForge.net's Techsay panel and you'll get the chance to >>> share your >>> opinions on IT & business topics through brief surveys-and earn cash >>> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV >>> >>> >>> >> >> >> ------------------------------------------------------------------------- >> >> Take Surveys. Earn Cash. Influence the Future of IT >> Join SourceForge.net's Techsay panel and you'll get the chance to >> share your >> opinions on IT & business topics through brief surveys-and earn cash >> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV >> >> >> > > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
