similar to: Some Information about compression rates to expect using zlib/xz compression

zstd support was added in v2.3.11 (not v2.3.12 like I mistakenly tried to say in the earlier mail). > On 28. Aug 2020, at 16.36, Robert Nowotny <rnowotny at rotek.at> wrote: > > > ok, I did install zstd (zstd command line interface 64-bits v1.4.4, by Yann Collet) > > reconfigured & compiled dovecot 2.3.10.1 again with option : with-zstd > > changed the

ok, I did install zstd (zstd command line interface 64-bits v1.4.4, by Yann Collet) reconfigured & compiled dovecot 2.3.10.1 again with option : with-zstd changed the configuration file to : zlib_save = zstd and restarted dovecot - now I have following log file errors : Aug 28 16:17:39 lxc-imap dovecot: imap(rnowotny)<237930><H1kft/CtENRUclcc>: Error: zlib_save: Unknown

unfortunately after re-installing 2.3.11.3, those broken-pipe errors appear again. (on different, new files) so for sure there is something broken with zlib. I will go back to2.3.10.1 now. attached is the configuration file, though it did not change between 2.3.10.1 and 2.3.11.3 Robert Am 26.08.2020 um 09:42 schrieb Robert Nowotny: > I had 4 broken mdbox files for 4 different users. >

I had 4 broken mdbox files for 4 different users. After deleting them, dovecot re-indexed, now everything is ok again. I can try to update tonight again to 2.3.11.3 and see if some broken files will appear again tomorrow. Am 25.08.2020 um 14:51 schrieb Aki Tuomi: >> On 25/08/2020 14:35 Robert Nowotny <rnowotny at rotek.at> wrote: >> >> >> I get ZLIB Errors after

On 28. Aug 2020, at 12.10, Robert Nowotny <rnowotny at rotek.at> wrote: > > unfortunately after re-installing 2.3.11.3, those broken-pipe errors appear again. (on different, new files) > so for sure there is something broken with zlib. > I will go back to 2.3.10.1 now. > attached is the configuration file, though it did not change between 2.3.10.1 and 2.3.11.3 Oh, this is

> On 25/08/2020 14:35 Robert Nowotny <rnowotny at rotek.at> wrote: > > > I get ZLIB Errors after dovecot upgrade from 2.3.10.1 to 2.3.11.3 > > > Aug 21 15:27:34 lxc-imap dovecot: imap(acsida)<63870><jZk...>: Error: Mailbox Sent: UID=40826: read(zlib(/home/vmail/virtualmailboxes/acsida/storage/m.2409)) failed:

Dear Aki, I switched to "gz" now, since "zstd" also gave some errors on writing to files. I dont know if "xz" compression or "zstd" shreddered my MDBOX Files, but I lost 4 days of mail. (a couple of thousand mails). After restoring the backup (what was made after switching to version 2.3.11.3) I still have some broken mdfiles, but not too many. Interestingly

Dear Aki, I switched to "gz" now, since "zstd" also gave some errors on writing to files. I dont know if "xz" compression or "zstd" shreddered my MDBOX Files, but I lost 4 days of mail. (a couple of thousand mails). After restoring the backup (what was made after switching to version 2.3.11.3) I still have some broken mdfiles, but not too many.

when syncing Mailboxes with IMAPSYNC, using xz compression the dbox file gets corrupted. the same configuration was working ok on low load with xz compression. Dovecot Version 2.2.12 Linux Mint 16 EXT4 Filesystem another dovecot user already reported the same problem on the mailinglist, using dsync. That user switched to bz2 compression what worked for him. the answer was : > are you on

I get ZLIB Errors after dovecot upgrade from 2.3.10.1 to 2.3.11.3 Thunderbird reports some error when try to save/open a bigger attachment. Aug 21 15:27:34 lxc-imap dovecot: imap(acsida)<63870><jZk...>: Error: Mailbox Sent: UID=40826: read(zlib(/home/vmail/virtualmailboxes/acsida/storage/m.2409)) failed: read(/home/vmail/virtualmailboxes/acsida/storage/m.2409) failed: Broken

when syncing Mailboxes with IMAPSYNC, using xz compression the dbox file gets corrupted. the same configuration was working ok on low load with xz compression. Dovecot Version 2.2.12 Linux Mint 16 EXT4 Filesystem another dovecot user already reported the same problem on the mailinglist, using dsync. That user switched to bz2 compression what worked for him. the answer was : > are you on

On 10. Sep 2020, at 14.07, Robert Nowotny <rnowotny1966 at gmail.com> wrote: > > > On 9. Sep 2020, at 11.14, Robert Nowotny <rnowotny1966 at gmail.com <mailto:rnowotny1966 at gmail.com>> wrote: >> >>>> Sep 3 08:33:25 lxc-imap dovecot: imap(mpaul)<48684><2/9E5mKuAezAqKjk>: Error: Mailbox Sent: UID=2171:

While migrating users from Cyrus IMAP v2.3.14 to Dovecot 2.2.12 (compiled from source) dsync aborts with a backtrace on some (maybe 15 out of 800) mail accounts: (same error happens wiht or without -f flag) dsync -D -v -o mail_fsync=never mirror -f -R -u user at domain imapc: <snip> dsync(user at domain.com): Debug: brain M: in state=sync_mails dsync(user at domain.com): Debug: brain M:

On 8. Sep 2020, at 12.35, Robert Nowotny <rnowotny1966 at gmail.com> wrote: Dear Aki, I switched to "gz" now, since "zstd" also gave some errors on writing to files. What kind of errors? Probably this? : Panic: file ostream.c: line 287 (o_stream_sendv_int): assertion failed: (!stream->blocking) can be - unfortunately I do not have the log files anymore... Sep

> > On 8. Sep 2020, at 12.35, Robert Nowotny <rnowotny1966 at gmail.com <mailto:rnowotny1966 at gmail.com>> wrote: >> >> >> Dear Aki, >> I switched to "gz" now, since "zstd" also gave some errors on writing to files. > > What kind of errors? Probably this? : Panic: file ostream.c: line 287 (o_stream_sendv_int): assertion

On 9. Sep 2020, at 11.14, Robert Nowotny <rnowotny1966 at gmail.com> wrote: Sep 3 08:33:25 lxc-imap dovecot: imap(mpaul)<48684><2/9E5mKuAezAqKjk>: Error: Mailbox Sent: UID=2171: read(zlib(/home/vmail/virtualmailboxes/mpaul/storage/m.119)) failed: read(/home/vmail/virtualmailboxes/mpaul/storage/m.119) failed: Broken pipe (FETCH BODY[]) Also this way you can see if the broken

On 8. Sep 2020, at 12.35, Robert Nowotny <rnowotny1966 at gmail.com> wrote: > > > Dear Aki, > I switched to "gz" now, since "zstd" also gave some errors on writing to files. What kind of errors? > I dont know if "xz" compression or "zstd" shreddered my MDBOX Files, but I lost 4 days of mail. (a couple of thousand mails). > After

Yes, you can: whenever you are unable to make a decent backup at least once a week, your diskspace must be considered to big. Friedrich -----Ursprüngliche Nachricht----- Von: Per Wigren [mailto:wigren@home.se] Gesendet: Freitag, 21. Juni 2002 07:37 An: vorbis@xiph.org Betreff: Re: [vorbis] When will quality increase be unnoticable? <p>Friday 21 June 2002 01.33 skrev Øyvind Stegard: >

I have Postfix/Dovecot with virtual domains, same setup unaltered since server was set up quite a while ago last month, added a new virtual domain, 'just like before'. but, today noticed this in the queue/log 'overdrawn his diskspace quota'[1]: user's Maildir cur has like 48,762,696 bytes (lot less than other users) tried some searches, found similar probs, but, no

Hello, Just wondering: Dovecot has gzip/bzip2 compression/decompression support. According to this: http://stephane.lesimple.fr/wiki/blog/lzop_vs_compress_vs_gzip_vs_bzip2_vs_lzma_vs_lzma2-xz_benchmark_reloaded gzip and bzip2 aren't really useful together. While gzip can offer speed and a reasonable amount of compression ratio, bzip2 is slow, especially on decompression, which Dovecot does