Hi Daniel,
I am the developer who did the work for this feature. We originally had
a force flag planned for all the utilities that were modified to enable
in use checking. However, the force flag was an area of much debate and
in the end we removed it. We recognize this is a potential issue for
experienced sysadmins. My suggestion, file an RFE and if enough people
feel this is an issue then we can revisit this decision.
And, yes you are correct, NOINUSE_CHECK does disable in use checking but
is not intended to be a public interface.
thanks,
sarah
*****
Daniel Rock wrote:
Hi,
this week I gave snv_36 a try (hadn't upgraded for a long time) - and
this new "feature" (put in double quotes) was getting me in rage:
6194015 PSARC/2004/776 - Device in use checking for Solaris utilities
What I normally do after Solaris installation is mirroring the boot
disk via SVM. Sometimes I forget to reserve a small region on the disk
for the metadb. No problem - I then usually do the following steps:
1. disable swap (swap -d /dev/dsk/c0t0d0s1)
2. reduce swap by the required amounts of cylinders (usually metadb
doesn't
get more than 1 cylinder - hehe, I'm on the cheap side)
3. create a metadb with the freed up space
But this new feature also forces me to uncomment the swap entry in
/etc/vfstab (only to reactivate it later - two completely unnecessary
steps):
# format c0t4d0
selecting c0t4d0
[disk formatted]
Warning: Current Disk has mounted partitions.
/dev/dsk/c0t4d0s0 is currently mounted on /. Please see umount(1M).
/dev/dsk/c0t4d0s1 is normally mounted on according to /etc/vfstab.
Please remove this entry to use this device.
{ shrink slice 1 and create another slice }
partition> la
Cannot label disk when partitions are in use as described.
partition> aarrgh!&"/()%#
aarrgh!&"/()%# is not expected.
If you do this early after installation with /sbin/sh as your shell
and no job control you cannot even ^Z format and edit /etc/vfstab. You
have to quit format and start from the beginning.
This happens when programs try to be more clever than the
administrator - as a result they behave like Windows systems or HAL
("I'm sorry, Dave. I'm afraid I can't do that.")
By accident I also found a workaround today:
6291309 PSARC/2005/461 - libdiskmgt should enable bypassing of in-use
checking
Sounds good, but how is it done? Well not officially documented at all
but studying the source code I found out I just have to set the
environment variable "NOINUSE_CHECK".
But it should be a simple command line option in format, preferrable
the already existing -e (expert) option (-f is already in use).
<end of rant>
Daniel
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