[EMAIL PROTECTED] schrieb: > Patrick: > >> Yup .. didnt see them in the first place .. it's "aufs >> parse_opts:540:mount[2056]: lookup failed /real_root (-2) >> > > This is one of the most important message. > The value -2 means ENOENT, and you were right. aufs could not find > /real_root. Currently, you cannot change your branch mode. > > ---------------------------------------------------------------------- > >
Ye. >> just digged through the strace log myself .. seems as if it was >> /etc/fstab related .. now that I changed one fstab entry from "unionfs / >> unionfs 0 0" to "aufs / aufs 0 0" there's another error: >> >> mount: / not mounted already, or bad option >> failure bad /proc/mounts 1 >> >> + another strace log which is again attached. I thought /etc/fstab was >> not related but /etc/mtab was? while I only adapted /etc/fstab (without >> rebooting) mount acts totally different. >> > > Thank you for your two strace logs. > The first one shows, > - mount(8) searches /sbin/mount.unionfs and fails > - mount(2) returns EINVAL because aufs returns "lookup failed /real_root > (-2)" > > The second shows, > - mount(8) searches /sbin/mount.aufs and executes it > - /sbin/mount.aufs returns an error "failure bad /proc/mounts 1" because > of an mis-match between /etc/mtab and /etc/fstab, probably. > You showed me your /proc/mounts, and there were aufs entries. > none / aufs rw,xino=/new/.aufs.xino,br:/new=rw:/real_root=ro 0 0 > none /dev/.static/dev aufs > rw,xino=/new/.aufs.xino,br:/new=rw:/real_root=ro 0 0 > Assuming your /proc/mounts is unchagned, your modification to fstab is > wrong. > aufs / aufs 0 0 > should be > none / aufs 0 0 > since you mounted as 'none.' > - If you modified fstab correctly, the result "lookup failed /real_root > (-2)" would not change since your /real_rool is hidden. > > If you mount your root filesystem manually with specifying both of "dev" > and "mntpnt", the root entry in /etc/fstab is unnecessary, usually. > > If you really need to remount your aufs, I will try addning new remount > options which handle the branch index instead of branch path. It may > work, but I am not sure. > You seem to be just trying aufs, and don't need the new options actually, > do you? > > Well, I am trying it on purpose. What I want to do is, using an usual asus hardware router (wl500gP), then put an openwrt 2.6 kernel to it which boots debian from an usb stick. Since flash media has limited writes cycles I wanted to use unionfs/aufs in order to write changes / logs etc. to ram .. but sometimes I need modifications to be done permanently, thus infact I would need that. But isnt there another way? e.g. copying / mount-moving/binding real_root to the union or something like that? > Junjiro Okajima > > 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
