> I had the understanding that due to the limitations of the > "SCSI IPL" feature that multipathing of the root filesystem was > not supported. I cannot find the reference doc that gave me this > impression, but I continue to look for it.
If "supported" refers explicitly to what IBM and/or the Linux distributors will commit to, then the limit is understandable. But if you're just looking for the capability, then I suspect you could adjust the "initial RAMdisk" to set your root FS for multipath SAN I/O. The whole initial RAMdisk operation is a bit of a hack: things happen before your run-time root is mounted. The root FS in that phase is an in-memory filesystem, so you have (or the distributor has) freedom to load drivers, twiddle plug-and-play, adjust the hardware, even load microcode, and after all that mount and run with the real root. If you know how to get any filesystem running with multipath, then you can probably get your root FS running with multipath. If multipath operation requires that the devices not be "busy" before creating the MD set (and it does), then you cannot get multipath without RAMdisk because even a read-only root is "busy" from that perspective. -- R, ---------------------------------------------------------------------- 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
