Public bug reported:
When booting a server that is suffering from a (probably unrelated) bug
in multipath-tools, I get the following questions posed on the serial
console during bootup:
The disk drive for /opt/vnx is not ready yet or not present.
Continue to wait, or Press S to skip mounting or M for manual recovery
Problem is, pressing "S" or "M" (even if followed by a newline) does
absolutely nothing on the serial console. It does work on the KVM
console, but that might not be available. You might very well need to
send someone to a physical data centre somewhere in the middle of
nowhere. (I ended up with powercycling the server, temporarily network
booting it into a ramdisk, mounting the rootfs and commenting out the
problematic entry from /etc/fstab, and rebooting again - which went
fine, allowing me to later mount the missing filesystem manually via
ssh.)
I found no way to make the boot finish or break out to a debug shell,
and it happens before sshd starts, so you're basically stuck with no
apparent way to recover. For this reason I feel the bug is quite
severe.
For what it's worth I'm running 14.04.4 LTS, mountall package version is
2.53. The kernel command line is
«BOOT_IMAGE=/@/boot/vmlinuz-3.13.0-77-generic
root=UUID=2a141a43-97b0-4084-8816-ed1c41ac43e0 ro rootflags=subvol=@
console=tty1 console=ttyS0,115200n8».
Tore
** Affects: mountall (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1547193
Title:
Impossible to answer "disk drive not ready" question on serial console
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