zlib plugin doesn't add "Z" flag to Maildir filename
I enabled zlib compression, so new mails are saved compressed.
Now I want to convert the old mails to gzip with the find and gzip command, but now I don't know which files are already gzip compressed by dovecot.
Shouldn't zlib_save itself add Z to the Maildir flags? As suggested in the compress guide on http://wiki2.dovecot.org/Plugins/Zlib ?
-- Tom
Il 10/03/2016 10:38, Tom Sommer ha scritto:
I enabled zlib compression, so new mails are saved compressed.
Now I want to convert the old mails to gzip with the find and gzip command, but now I don't know which files are already gzip compressed by dovecot.
Simple check if the file is already compress (es. if gzip -t "${MAILFILE}" 2> /dev/null".
Shouldn't zlib_save itself add Z to the Maildir flags? As suggested in the compress guide on http://wiki2.dovecot.org/Plugins/Zlib ?
No, zlib plugins only compress email without chaning the name.
I suggest to do not use script that rename email files because they can invalid the uidlist.
Alessio Cecchi Postmaster @ http://www.qboxmail.it https://www.linkedin.com/in/alessice
On 2016-03-10 15:00, Alessio Cecchi wrote:
Il 10/03/2016 10:38, Tom Sommer ha scritto:
I enabled zlib compression, so new mails are saved compressed.
Now I want to convert the old mails to gzip with the find and gzip command, but now I don't know which files are already gzip compressed by dovecot.
Simple check if the file is already compress (es. if gzip -t "${MAILFILE}" 2> /dev/null".
Thanks. I worked around it with file.
Shouldn't zlib_save itself add Z to the Maildir flags? As suggested in the compress guide on http://wiki2.dovecot.org/Plugins/Zlib ?
No, zlib plugins only compress email without chaning the name.
I know, I'm suggesting it _should_ change the Maildir flag.
I suggest to do not use script that rename email files because they can invalid the uidlist.
I don't think adding a Maildir flag does that. If it does, then the wiki should be changed.
// Tom
Il 10/03/2016 15:33, Tom Sommer ha scritto:
On 2016-03-10 15:00, Alessio Cecchi wrote:
Il 10/03/2016 10:38, Tom Sommer ha scritto:
I enabled zlib compression, so new mails are saved compressed.
Now I want to convert the old mails to gzip with the find and gzip command, but now I don't know which files are already gzip compressed by dovecot.
Simple check if the file is already compress (es. if gzip -t "${MAILFILE}" 2> /dev/null".
Thanks. I worked around it with
file.
I suggest to use "gzip -t" for test if an email is already compress, with file I found some unrecognized compress email, a real example:
# file 1424615175.M471013P18835.pop04.domain.com\,S\=3982\,W\=4097\:2\,S 1424615175.M471013P18835.pop04.domain.com,S=3982,W=4097:2,S: Minix filesystem, V3, 6762 zones
# gzip -t 1424615175.M471013P18835.pop04.domain.com\,S\=3982\,W\=4097\:2\,S # echo $? 0
-- Alessio Cecchi Postmaster @ http://www.qboxmail.it https://www.linkedin.com/in/alessice
On 2016-03-10 16:06, Alessio Cecchi wrote:
Il 10/03/2016 15:33, Tom Sommer ha scritto:
On 2016-03-10 15:00, Alessio Cecchi wrote:
Il 10/03/2016 10:38, Tom Sommer ha scritto:
I enabled zlib compression, so new mails are saved compressed.
Now I want to convert the old mails to gzip with the find and gzip command, but now I don't know which files are already gzip compressed by dovecot.
Simple check if the file is already compress (es. if gzip -t "${MAILFILE}" 2> /dev/null".
Thanks. I worked around it with
file.I suggest to use "gzip -t" for test if an email is already compress, with file I found some unrecognized compress email, a real example:
# file 1424615175.M471013P18835.pop04.domain.com\,S\=3982\,W\=4097\:2\,S 1424615175.M471013P18835.pop04.domain.com,S=3982,W=4097:2,S: Minix filesystem, V3, 6762 zones
# gzip -t 1424615175.M471013P18835.pop04.domain.com\,S\=3982\,W\=4097\:2\,S # echo $? 0
Duly noted, thanks :)
participants (2)
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Alessio Cecchi
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Tom Sommer