Mergemaster -p Cannot create /var/tmp/temproot

Todd42 · Dec 5, 2011

[CMD=]uname -a[/CMD]

Code:

FreeBSD 8.2-RELEASE-p4 FreeBSD 8.2-RELEASE-p4 #0: Sun Dec  4 17:33:50 CST 2011 root@proteus:/usr/obj/usr/src/sys/DELLD610 i386

I just completed a [CMD=]make buildworld[/CMD] then a [CMD=]make installkernel[/CMD]. The next step was for me to boot into Single User Mode to use the [CMD=]mergemaster -p[/CMD] command. However, [CMD=]mergemaster -p[/CMD] says

Code:

FATAL ERROR: Cannot create /var/tmp/temproot.

Can someone tell me what I did wrong and tell me what I should do to resolve the issue?

pkubaj · Dec 5, 2011

Have you enabled rw mode?

Todd42 · Dec 5, 2011

Thank you for answering. How do I enable rw mode? Sorry, I am new to FreeBSD. I should have mentioned that...

Todd42 · Dec 5, 2011

I tried the command [CMD="mount -urw"][/CMD], and I still get the error:
Creating the temporary root environment in /var/tmp/temproot

Code:

mkdir: /var/tmp/temproot: Read-only file system
FATAL ERROR: Cannot create /var/tmp/temproot

Todd42 · Dec 5, 2011

Sorry, I meant to say, I tried the command...
[CMD=]mount -urw[/cmd]

Todd42 · Dec 5, 2011

Got it, thanks!

volatilevoid · Apr 21, 2013

Just some information for ZFS users:

mount -urw does not work with ZFS. You need to enter zfs set readonly=off <pool name>, otherwise mergemaster will abort with the same error message as above. Maybe this could be added to chapter 25.7.1 The Canonical Way to Update Your System in the FreeBSD handbook?

Thomas

kpa · Apr 21, 2013

The remount from read only to read write certainly works on ZFS without touching the readonly property if you do it like this:

# mount -u /