On Thu, Aug 13, 2009 at 10:50:30AM -0700, Mike Castle wrote:
On Wed, Aug 12, 2009 at 10:18:30PM -0700, Mike Castle wrote:

Severity: grave
Justification: causes non-serious data loss

Incorrect: No data was actually *lost*, right?

I think it's correct.  After all the definition is:

'causes non-serious data loss', """causes the loss of data on the system
   that is unimportant, or restorable without resorting to backup media"""

Granted, I ran migrationtools once, two years ago.  And now, trying to
upgrade slapd caused there to be no ldap server running, because the
data is invalid.  As a result, I ended up with an ldap server with no
data in it.  Seemed lost to me.  Sure, it was there in /var/backups.
But it did involve a restore process that seems to imply the final
clause there.

migrationtools did not hide your data, slapd did!

If package A contains "test -e /arrrgh && rm -rf /home" and package B contains "touch arrrgh" then package B does not have a grave bug.

What you describe above is slapd upgrade script dropping (or hiding) your data when containing syntactic errors. If you find that behaviour a grave bug, then file a bugreort against that package.

migrationtools generating bogus ldif data is *not* a grave bug. Tolerating bogus ldif data and then later being more strict might be (but as you said the data was not exactly lost - and I suspect that slapd kindly asked you if you wanted to do the upgrade).

Please do not discuss slapd behaviour any further here - only migrationtools behaviour.


The fix for bug#307618 actually introduced another issue.  Any system that used migrationtools to load services will be unable to upgrade to slapd 2.4.17-1 (actually, anything newer than 2.4.15).  Reference bug#541292 for details.  But essentially, `cn=echo+ipServiceProtocol=tcp+ipServiceProtocol=udp' is an illegal value.


At first glance, it seems that replacing the + with _ allows the file to load, but I'm not sure if that's sufficient for everything to work properly.  I don't know if this dn: is used or just needs to be unique.

In principle they are unique, but I suspect that most users of migrationtools won't actually use that data.

I will simply disable that patch for now, and leave it to the user to decide if they want to a) use only some of the scripts og b) force-load with the result that tcp and udp entries are merged.

A force load that results in the same string will never work in the
long run.  Better to give them the ability to have a valid string.

You are free to have that opinion.  You would then choose a) above :-)


Maybe instead of `+' use `_and_'   ?

I dislike inventing pseudo-separators. I thought I was clever discovering that "+" separator but learned a lesson here.


Kind regards,

 - Jonas

--
* Jonas Smedegaard - idealist og Internet-arkitekt
* Tlf.: +45 40843136  Website: http://dr.jones.dk/

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