root fs switching to read only?

[Dan Martin]

Hi All,

I'm testing  SLES10 SP2. 
We want to be able to rsync data from a running machine
to the SLES10 SP2 test  machine.  rsync'ing to 2 different
filesystems, we get  errors about the filesystem being readonly:

rsync: failed to set times on "/usr/OSAS651/data": Read-only file system 
(30)
sent 174782634 bytes  received 105572 bytes  2480683.77 bytes/sec
total size is 3912215563  speedup is 22.37
rsync error: some files could not be transferred (code 23) at 
main.c(892) [sende
r=2.6.8]

/usr/OSAS651 is the mount point.  data is a subdirectory.  We mount by 
Volume label.

Coincidentally, the root  fs is also  broken at the moment, that is, it 
is set to read-only. 
We use LVM for all filesystems
except  for root and boot.  All filesystems are ext3.  We have about 8  
other ext3
filesystems that are all writeable, even though root is not, and 
/usr/OSAS651 is not.  I  noticed the first failure while rsyncing to
another filesystem,  /home.  Rebooting took care of that.  Then it broke
again when I tried rsyncing to /usr/OSAS651, and I noticed that  root is
now also read-only.  I don't know if root went read-only on the first
rsync pass.  I doubt that rsync is causing the problem because we've used
it without problems in similar scenarios.

Thanks for advice,
Dan