[squid-users] squid-3.5.x / Ipc::Mem::Segment::create failed to shm_open(/squid-cf__metadata.shm): (38) Function not implemented

[Frank Reppin]

Hi all,

we're following 3.4.x (currently 3.4.11) closely and decided
to upgrade to 3.5.1 in a test environment today:

Environment (test+production) is linux vserver based:

   host system:     Debian Wheezy 7.8 x64
   guest system:    Debian Wheezy 7.8 x64
   kernel+vs patch: 3.14.27-vs2.3.6.14

and squid (all 3.3.x and all 3.4.x) worked without
any flaws so far (without any special tricks)...
... except 3.5.x which now dies after emitting:

   Ipc::Mem::Segment::create failed to 
shm_open(/squid-cf__metadata.shm): (38) Function not implemented

straight after starting up.

We've read through

   http://www.squid-cache.org/Versions/v3/3.5/squid-3.5.1-RELEASENOTES.html

but cannot spot any fundamental change there (which might
cause the aforementioned issue).
We also tend to not think that this is caused by running
squid within a linux vserver context (because it used to
work since years this way).

The squid in question is compiled like:

frank at testbed:~# /usr/local/squid-3.5.1/sbin/squid -v
Squid Cache: Version 3.5.1
Service Name: squid
configure options:  '--prefix=/usr/local/squid-3.5.1' 
'--localstatedir=/var' '--with-pidfile=/var/run/squid3.pid' 
'--with-swapdir=/var/spool/squid3' '--with-logdir=/var/log/squid3' 
'--with-filedescriptors=65536' '--disable-maintainer-mode' 
'--disable-dependency-tracking' '--disable-translation' '--enable-auth' 
'--enable-auth-basic' '--enable-auth-digest' '--enable-auth-negotiate' 
'--enable-auth-ntlm' '--enable-cache-digests' '--enable-delay-pools' 
'--enable-esi' '--enable-external-acl-helpers' 
'--enable-follow-x-forwarded-for' '--enable-icmp' '--enable-inline' 
'--enable-linux-netfilter' '--enable-log-daemon-helpers' 
'--enable-removal-policies=heap,lru' '--enable-snmp' '--with-openssl' 
'--enable-ssl-crtd' '--enable-storeio=aufs,diskd,ufs' 
'--enable-url-rewrite-helpers' '--enable-zph-qos' '--with-large-files' 
'--with-default-user=proxy'


We'd appreciate any hints! :)

TIA and cheers,
frank\


-- 
43rd Law of Computing:
         Anything that can go wr
fortune: Segmentation violation -- Core dumped