Hey Ben, Thanks for your inputs. I will give it another try and let you know if it worked. Regards, Pradipmaya. On 12/21/07, Benjamin Marzinski <bmarzins@xxxxxxxxxx> wrote: > On Thu, Dec 20, 2007 at 08:46:41AM -0800, Pradipmaya Maharana wrote: > > Hi, > > > > Pardon my knowledge on Linux, but in your article did you mean that > > the /boot should be on a local disk and /root, swap can be on > > multipath device. > > > > I am trying to install /boot, /root and swap all on one multipath > > device and try to boot from it. It does not boot, no error just blank > > screen. My equirement is to install everything on multipath device; so > > is it possible at all? I mean can I have the boot device (/boot) too > > on a multipath device. > > > > Following is what I tried on RHEL > > - selected "linux mpath" > > - I could see one local disk and 3 multipath devices > > - I chose custom partition type > > - instead of going for LVM, I selected one single multipath device > > and installed everything on it (/boot, / and swap). > > - Tried rebooting, it won't boot :( > > > > What am I missing here? > > I haven't ever tried putting swap on a multipath device, but I believe > it should work. Your steps seem correct. Are you getting any messages > at all on the console when you boot up? > > One thing you need to be aware of is that while multipathed root is > pretty simple, for multipathed boot to work, your machine needs to be > able to boot from the device that your are multipathing with no help > from any linux device drivers (since they obviously can't be loaded > until you run the boot loader). I believe some machines need something > to be set in BIOS in order to try and boot off SAN storage. > > To narrow down the problem, I would try setting up the same > configuration, but without multipathing the device. If this doesn't > work, then you are probably having problems booting from your storage. > If it does work, then when you set it up with multipathing, you should > at least be making it past GRUB, and looking at the console output > should shed some light on what's going wrong. > > Note, if you have a device that needs a prio_callout, multipath will > still fail in the all paths down case, because it can't access the > callout program. The upstream code currently fixes that by using > callout library functions, and the next device-mapper-multipath package > from RHEL will fix it by caching the callouts in a private namespace. > > -Ben > > > Thanks and Regards, > > Pradipmaya. > > > > > > On 12/19/07, Pradipmaya Maharana <pradipmaya@xxxxxxxxx> wrote: > > > Hi Chandra, > > > > > > Thanks. I will givei it a try. > > > > > > Regards, > > > Pradipmaya. > > > > > > On 12/19/07, Chandra Seetharaman <sekharan@xxxxxxxxxx> wrote: > > > > I am working on a multipath usage document. Attached is the installation > > > > section of that document. > > > > > > > > Note that it is written for RHEL5 U1 and SLES10 SP1. > > > > > > > > Good Luck, > > > > > > > > chandra > > > > > > > > On Wed, 2007-12-19 at 13:02 -0800, Pradipmaya Maharana wrote: > > > > > Hi All, > > > > > > > > > > Is there a process/document that talks about how to configure > > > > > root/boot device for multipath? > > > > > > > > > > Thanks and Regards, > > > > > Pradipmaya. > > > > > > > > > > -- > > > > > dm-devel mailing list > > > > > dm-devel@xxxxxxxxxx > > > > > https://www.redhat.com/mailman/listinfo/dm-devel > > > > -- > > > > > > > > ---------------------------------------------------------------------- > > > > Chandra Seetharaman | Be careful what you choose.... > > > > - sekharan@xxxxxxxxxx | .......you may get it. > > > > ---------------------------------------------------------------------- > > > > > > > > > > > > -- > > > > dm-devel mailing list > > > > dm-devel@xxxxxxxxxx > > > > https://www.redhat.com/mailman/listinfo/dm-devel > > > > > > > > > > > > > > > -- > > dm-devel mailing list > > dm-devel@xxxxxxxxxx > > https://www.redhat.com/mailman/listinfo/dm-devel > > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel > -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
