Ditto.. especially coming from the wonders of z/VM link modes (e.g. MR seems like what we want here) as we VMers have..
Scott On Mon, Jun 15, 2009 at 6:58 PM, Richard Troth <[email protected]> wrote: > I have never understood why the driver does not automatically set the > R/O flag when a write operation is rejected. > > > -- R; <>< > > > > > > 2009/6/15 Carsten Otte <[email protected]>: > > Am Sun, 14 Jun 2009 01:34:35 +0200 > > schrieb Rob van der Heij <[email protected]>: > >> One of the problems is that S/390 has no way to sense the R/O setting > >> of the disk, so we can't pass that to the mount (like you have with a > >> CD for example). The only way to tell is by trying to write to the > >> disk.We did not think that was very elegant. > >> > >> But you can also tell the Linux dasd driver to not write it, that > >> should be more powerful than mount ro. It's probably through the > >> hwcfg-* files. I believe that with that setting the mount will default > >> to "ro" ? > > You recall correctly. The parameter can also be set via the (ro) > > suffix on dasd parameter line either as parameter to insmod when > > loading dasd, or via kernel parameter (zipl). Like this: > > dasd=1000,1001(ro),2000-20ff(ro) > > ^^ dasd 1000 will be writable, 1001 and 2000-20ff are read only. > > > > All mounts of subject dasds will be read-only by default. The > > parameter can be changed using the blockdev command (--setro option)*. > > > > * make sure you're not setting a disk to read-only that is currently > > mounted read+write > > > > ---------------------------------------------------------------------- > > 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 > > > > ---------------------------------------------------------------------- > 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 > ---------------------------------------------------------------------- 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
