Robert Milkowski wrote: > Hello Richard, > > Friday, September 28, 2007, 7:45:47 PM, you wrote: > > RE> Kris Kasner wrote: > >>>> 2. Back to Solaris Volume Manager (SVM), I guess. It's too bad too, >>>> because I >>>> don't like it with 2 SATA disks either. There isn't enough drives to put >>>> the >>>> State Database Replicas so that if either drive failed, the system would >>>> reboot unattended. Unless there is a trick? >>>> >>> There is a trick for this, not sure how long it's been around. >>> Add to /etc/system: >>> *Allow the system to boot if one of two rootdisks is missing >>> set md:mirrored_root_flag=1 >>> > > RE> Before you do this, please read the fine manual: > RE> > http://docs.sun.com/app/docs/doc/819-2724/chapter2-161?l=en&a=view&q=mirrored_root_flag > > The description on docs.sun.com is somewhat misleading. > > http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/io/lvm/md/md_mddb.c#5659 > 5659 if (mirrored_root_flag == 1 && setno == 0 && > 5660 svm_bootpath[0] != 0) { > 5661 md_clr_setstatus(setno, MD_SET_STALE); > > Looks like it has to be diskset=0 bootpath has to reside on svm device > and mirrored_root_flag has to be set to 1. > > So if you got other disks (>2) in a system just put them in a separate > disk group. > > > > If we have more than 2 disks, then we have space for a 3rd metadb copy. -- richard
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