Craig, You should also update the FSTAB in the following way:
/dev/disk/by-path/ccw-0.0.0xxx-part1 / ext2 ro,acl,user_xattr 0 0 For me this works fine. The xxx has also an ext2 filesystem on it. I had also ext3 in the beginning and disabled journaling with tunefs. 0 0 at te end avoid checking. Before I use the R/O image I check that it was cleanly unmounted and performed a manual fsck on it. But please note that you need the /dev directory on a r/w disk. Before the switch from the initrd system, where the /dev lives in memory, the boot sequence does a /bin/mount --move /dev /root/dev When the /dev is not r/w then you have the i/o errors. I have circumvented that because I slightly modified the init script. Immediately after the mount the init script calls a vendor specific script (vendor_init.sh). I copied this call and build this vendor_init.sh in such a way that it accepts a parameter. In this script I can mount the minidisk with /dev filesystem and the above command works. And the boot sequence continues normally. Personally I find it a pity that SLES makes it more difficult to have a R/O filesystem than earlier releases. Regards, Florian On Tue, Nov 11, 2008 at 3:16 AM, Mark Post <[EMAIL PROTECTED]> wrote: > >>> On 11/10/2008 at 7:56 PM, Craig Loubser <[EMAIL PROTECTED]> > wrote: > > Hi Mark, > > > > I updated zipl.conf to add the "ro" to the end of the kernel parameters > > and that did fix that but it is still performing a "fsck" on the root > > file system prior to mounting it as R/O. As a result, I still end up > > with I/O errors on the root file system due to lost page writes. > > The fsck is not what is causing the I/O errors. When you see "fsck > succeeded" it's done and over with. Let me guess, though. Is this an ext3 > file system (or reiserfs), and are you mounting it as ext3 instead of ext2? > If so, then I suspect the system is trying to replay the journal, resulting > in the I/O errors. There's no point in having a journaling file system that > is only going to be mounted read-only. Use ext2 instead. > > > Mark Post > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > -- Best regards Florian Bilek ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
