dovecot - Jan 2017 - Quota count does not work with lock_method=dotlock

Hello,

dovecot crashes when I switch the quota tracking from dict to count. The 
following is working since years:

quota = dict:User quota::proxy::quota

I'm using a mysql quota dictionary.

Now I want to switch to the new "quota count" + "quota
clone"
combination. I'm loading the "quota_clone" plugin, and:

   #quota = dict:User quota::proxy::quota
   quota = count:User quota
   quota_vsizes = yes
   quota_clone_dict = proxy::quota

It works on a maschine where I'm using NFS with lock_method=fcntl. It's 
crashing on another maschine where I'm using NFS with 
lock_method=dotlock. See below.  Sadly I have to use dotlock, because of 
the NFS server.

It looks like quota count does not (yet) work with dotlock?

Michael

Jan 17 18:46:04 XXXX dovecot: imap-login: Login: user=<XXXX>, 
method=PLAIN, rip=10.0.XX.XX, lip=10.0.XX.XX, mpid=19123, secured, 
session=<XXXX>
Jan 17 18:46:04 XXXX dovecot: imap(XXXX): Panic: file file-lock.c: line 
285: unreached
Jan 17 18:46:04 XXXX dovecot: imap(XXXX): Error: Raw backtrace: 
/usr/local/lib/dovecot/libdovecot.so.0(+0x93ea2) [0x7f33f7812ea2] -> 
/usr/local/lib/dovecot/libdovecot.so.0(+0x93f8d) [0x7f33f7812f8d] -> 
/usr/local/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f33f77ac7c1] -> 
/usr/local/lib/dovecot/libdovecot.so.0(+0x98810) [0x7f33f7817810] -> 
/usr/local/lib/dovecot/libdovecot.so.0(file_wait_lock_error+0x26) 
[0x7f33f7817be6] -> 
/usr/local/lib/dovecot/libdovecot.so.0(file_try_lock_error+0x11) 
[0x7f33f7817c61] -> 
/usr/local/lib/dovecot/libdovecot.so.0(file_create_locked+0x17d) 
[0x7f33f7814d1d] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(+0xb25f3) 
[0x7f33f7b4d5f3] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(index_mailbox_get_virtual_size+0x4c)
[0x7f33f7b4d91c] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(index_mailbox_get_metadata+0x1ab)
[0x7f33f7b5510b] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(+0x5e357) 
[0x7f33f7af9357] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(+0xa15ac) 
[0x7f33f7b3c5ac] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(mailbox_get_metadata+0x60) 
[0x7f33f7ae0d80] -> 
/usr/local/lib/dovecot/lib10_quota_plugin.so(quota_count+0xfe) 
[0x7f33f6fa6bce] -> 
/usr/local/lib/dovecot/lib10_quota_plugin.so(+0x7d3e) [0x7f33f6fa6d3e] 
-> /usr/local/lib/dovecot/lib10_quota_plugin.so(quota_get_resource+0x78) 
[0x7f33f6fa5578] -> 
/usr/local/lib/dovecot/lib10_quota_plugin.so(+0x68b4) [0x7f33f6fa58b4] 
-> 
/usr/local/lib/dovecot/lib10_quota_plugin.so(quota_over_flag_check_startup+0x78)
[0x7f33f6fa63f8] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(hook_mail_namespaces_created+0x5e)
[0x7f33f7ae21ae] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(mail_namespaces_init_finish+0x46f)
[0x7f33f7ad745f] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(mail_namespaces_init+0x104) 
[0x7f33f7ad7674] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(mail_storage_service_next+0x6c5) 
[0x7f33f7ae5275] -> 
/usr/local/lib/dovecot/libdovecot-storage.so.0(mail_storage_service_lookup_next+0x4c)
[0x7f33f7ae55dc] -> dovecot/imap(client_create_from_input+0x46) 
[0x425476] -> dovecot/imap() [0x42567f] -> 
/usr/local/lib/dovecot/libdovecot.so.0(+0x316d3) [0x7f33f77b06d3] -> 
/usr/local/lib/dovecot/libdovecot.so.0(+0x319bd) [0x7f33f77b09bd] -> 
/usr/local/lib/dovecot/libdovecot.so.0(+0x3235a) [0x7f33f77b135a]
Jan 17 18:46:04 zzz-dovecot01 dovecot: imap(XXXX): Fatal: master: 
service(imap): child 19123 killed with signal 6 (core dumped)

On 2017-01-18 15:27, mkliewe at gmx.de wrote:
> dovecot crashes when I switch the quota tracking from dict to count.
I have the same problem, but I use 'dict:file' as quota backend - Maybe 
the error is due to quota_vsizes and not 'count'.

// Tom Sommer

On 24.01.2017 11:13, Tom Sommer wrote:
> On 2017-01-18 15:27, mkliewe at gmx.de wrote:
>
>> dovecot crashes when I switch the quota tracking from dict to count.
>
> I have the same problem, but I use 'dict:file' as quota backend -
> Maybe the error is due to quota_vsizes and not 'count'.
>
> // Tom Sommer
Hi!

What version of dovecot are you both using?

Aki