backup mdbox -> rbox

[jrse]

t10.mdbox.log
t10.rbox.log
diff.log

in some cases there is a difference of the keyword order:
e.g.
rbox: $label1 $label4 $label5
mdbox: $label4 $label1 $label5

to reproduce:

• create mdbox mailbox with imaptest
• do doveadm backup to rbox

validate:

compare.sh

users t1 - t100

#!/bin/bash
for i in seq 1 100;
do
doveadm fetch -u t$i "guid date.received date.sent flags pop3.uidl seq size.virtual uid user mailbox-guid mailbox" ALL > diff.text1
doveadm -c path to mdbox dovecot.conf fetch -u t$i "guid date.received date.sent flags pop3.uidl seq size.virtual uid user mailbox-guid mailbox" ALL > diff.text2

result=$(diff -y -W 200 diff.text1 diff.text2)

if [ $? -eq 0 ]
then
echo "all the same t$i"
else
echo "files are different t$i"
echo "$result"
fi
done

echo "done"

#################

[jrse]

a retest with a backup from mdbox to sdbox shows that the keyword order is also not preserved.

[jrse]

Due to the fact that sdbox storage plugin is handling keywords in the same way, i looked for answers regarding this issue and got the answer:

"there is nothing that guarantees their ordering
iow, you should not expect that to be preserved"

So i think we need to modify our check scripts to handle this "random" ordering of keywords.

[pburow]

I changed the keyword checking script by omitting the field "flags" now. But I extended the script with manual flags verification.