Hoping this should be useful ...
If root filesystem is readonly, the option
mount -o rw,remount / shouldn't work because /etc is readonly too and the
mtab shouldn't be written.
According to http://www.unixguide.net/linux/faq/04.15.shtml (and the man
mount too)
"Root File System Is Read-OnlyRemount it. If /etc/fstab is correct, you can
simply type:
mount -n -o remount /
If /etc/fstab is wrong, you must give the device name and possibly the
type, too: e.g.
mount -n -o remount -t ext2 /dev/hda2 /
To understand how you got into this state, see, ("EXT2-fs: warning:
mounting unchecked file system.")"
have you tried it in this manner?
Michele
On Fri, Oct 31, 2008 at 11:48 AM, Nikita Michalko <[EMAIL PROTECTED]
> wrote:
> Hi Jonas,
>
>
> Am Donnerstag, 30. Oktober 2008 11:07 schrieb Jonas Andradas:
> > Hello,
> >
> > have you tried remounting the file system in read-write mode? Something
> > like:
> >
> > mount -o rw,remount /
> >
> > ¿Forcing a node switch also fails, due to the read-only state?
>
> - we have tried almost everything - but with no succes. There was
> impossible
> to run anything (not shutdown, reboot -NOTHING!) - almost only with error:
> Input/Output error
>
> Regards
>
>
> Nikita Michalko
>
> > On Mon, Oct 13, 2008 at 03:31, Teh Tze Siong <[EMAIL PROTECTED]> wrote:
> > > I have been playing with HA+DRBD on 2 servers and each with one hard
> disk
> > > installed. The server is hosting the database for other application
> > > servers.
> > >
> > >
> > >
> > > Recently the application has failed and problem lies in the database
> > > server,
> > > the primary node. I've checked the server, network still up, I still
> can
> > > read the files and access to database but I cannot update anything and
> > > not even allowed to run a "shutdown -h now" or turn off the network
> > > interface - The file system has become read-only mode and heartbeat is
> > > still alive. I have no choice but to request the datacenter guy to
> unplug
> > > the network cables at the primary node, wait until I confirmed
> secondary
> > > node has taken over, then only power down the primary node.
> > >
> > >
> > >
> > > HA+DRBD works well for network failure or power failure on primary node
> > > but when it comes to this "half-dead" situation, it is driving me
> crazy.
> > >
> > >
> > >
> > > As the server is installed in remote datacenter, is there a better way
> > > for me to counter act this "half-dead" situation?
> > >
> > >
> > >
> > >
> > >
> > > Thanks,
> > >
> > > Zev
> > >
> > >
> > >
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