Successfully writes /system/etc/multipath.conf but cannot write to /etc
due to Talos read-only filesystem restrictions.
Attempts made:
- nsenter with sh/cat/ln - commands don't exist in Talos minimal env
- Mount /proc/1/root/etc - still read-only
- Bind mount - invalid argument
Blocker: Talos /etc is truly read-only post-boot. PX-CSI also fails
with same nsenter/command issues when trying to validate multipath.conf.
Next: Investigate PX-CSI configuration options or Talos machine config alternatives.
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