From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ed Sutter Date: Mon, 03 Mar 2014 17:14:47 -0500 Subject: [Buildroot] readonly rootfs problem Message-ID: <5314FED7.80903@alcatel-lucent.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Hi, I've been using buildroot to create my rootfs for a few months. I build my kernel directly out of freescale.git. I had been running with my rootfs nfs mounted, and all was well. Recently I had spent some time with a ramdisk-based rootfs because i was working on some kernel stuff. Now I'm going back to running rootfs/nfs and I'm finding that it "insists" on coming up in read-only mode. I was initially using buildroot-2013.08, and recently I updated to buildroot-2013.11; however, I don't think that has anything to do with this. As far as I can tell I have everything set up properly... ####On NFS host /etc/exports has... /full_path_to_my_rootfs *(rw,no_root_squash) ####On target... /etc/inittab... null::sysinit:/bin/mount -o remount,rw / # REMOUNT_ROOTFS_RW /etc/fstab... # /etc/fstab: static file system information. # # /dev/root / ext2 rw,noauto 0 1 proc /proc proc defaults 0 0 devpts /dev/pts devpts defaults,gid=5,mode=620 0 0 tmpfs /dev/shm tmpfs mode=0777 0 0 tmpfs /tmp tmpfs defaults 0 0 sysfs /sys sysfs defaults 0 0 Output from mount: # mount rootfs on / type rootfs (rw) 1.2.3.4:/full_path_to_my_rootfs on / type nfs (ro,relatime,vers=3,rsize=4096,wsize=4096,namlen=255,hard,nolock,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=1.2.3.4,mountvers=3,mountproto=tcp,local_lock=all,addr=135.222.138.108) devtmpfs on /dev type devtmpfs (rw,relatime,size=110708k,nr_inodes=27677,mode=755) proc on /proc type proc (rw,relatime) devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw,relatime,mode=777) tmpfs on /tmp type tmpfs (rw,relatime) sysfs on /sys type sysfs (rw,relatime) I actually think the problem is in the kernel, not the rootfs. I say this because even some of my older rootfs copies (still on my host) are now showing up as read only. The bootlog always ends up with this message: VFS: Mounted root (nfs filesystem) readonly on device 0:11. Any idea what I might be doing wrong here? Thanks, Ed