Hello all,

we use a farm with three persistent Varnishes (-s persistent,/cms/varnish_cache/persistent/varnish_storage.bin,204800M").

This Varnishes runs since 3 months without any crashes (in the moment not in production, but stressed with several stress tests).

Since some days, we use bans and the lurker process (lurker-friendly bans via: ban("obj.http.x-url ~ " + req.url);
We have about 250 bans/hour.

Now we have the big problem, that the varnishes crashes after some hours.
Curios: all three Varnishes crashes in the same moment. And they runs on three different Servers!

The follow part from syslog suggest, that there is an problem with an invalid ban:


Jan 9 19:40:32 ece-fe1 /var/lib/varnish/persistent[19622]: Child (19623) said CHK(0x7f91ffd261a0 BAN 2 0x7f34724f4000 <invalid>) = 1 Jan 9 19:40:33 ece-fe1 /var/lib/varnish/persistent[19622]: Child (19623) died signal=6 Jan 9 19:40:33 ece-fe1 /var/lib/varnish/persistent[19622]: Child (19623) Panic message: Missing errorhandling code in smp_append_sign(), storage_persistent_subr.c line 128:#012 Condition((smp_chk_sign(ctx)) == 0) not true.thread = (cache-worker)#012ident = Linux,2.6.32-131.2.1.el6.x86_64,x86_64,-spersistent,-smalloc,-hcritbit,epoll#012Backtrace:#012 0x42c7a6: /usr/sbin/varnishd() [0x42c7a6]#012 0x44a346: /usr/sbin/varnishd(smp_append_sign+0x126) [0x44a346]#012 0x447b6d: /usr/sbin/varnishd(SMP_NewBan+0x3d) [0x447b6d]#012 0x4125c7: /usr/sbin/varnishd(BAN_Insert+0x1a7) [0x4125c7]#012 0x433bd5: /usr/sbin/varnishd(VRT_ban_string+0xc5) [0x433bd5]#012 0x7f91f39fa4be: ./vcl.PNU3fGhs.so(+0x24be) [0x7f91f39fa4be]#012 0x433863: /usr/sbin/varnishd(VCL_recv_method+0x43) [0x433863]#012 0x417c22: /usr/sbin/varnishd(CNT_Session+0xb62) [0x417c22]#012 0x42efb8: /usr/sbin/varnishd() [0x42efb8]#012 0x42e19b: /usr/sbin/varnishd() [0x42e19b]#012sp = 0x7f91ed4ab008 {#012 fd = 15, id = 15, xid = 683670119,#012 client = 172.27.70.103 36115,#012 step = STP_RECV,#012 handling = deliver,#012 restarts = 0, esi_level = 0#012 flags = #012 bodystatus = 4#012 ws = 0x7f91ed4ab080 { #012 id = "sess",#012 {s,f,r,e} = {0x7f91ed4abc90,+56,(nil),+65536},#012 },#012 http[req] = {#012 ws = 0x7f91ed4ab080[sess]#012 "PURGE",#012 "105867846",#012 "HTTP/1.0",#012 },#012 worker = 0x7f91ef1faa80 {#012 ws = 0x7f91ef1facc0 { #012 id = "wrk",#012 {s,f,r,e} = {0x7f91ef1e8a30,+32,(nil),+65536},#012 },#012 },#012 vcl = {#012 srcname = {#012 "input",#012 "Default",#012 },#012 },#012},#012 Jan 9 19:40:33 ece-fe1 /var/lib/varnish/persistent[19622]: child (6907) Started Jan 9 19:40:33 ece-fe1 /var/lib/varnish/persistent[19622]: Pushing vcls failed:#012CLI communication error (hdr) Jan 9 19:40:33 ece-fe1 /var/lib/varnish/persistent[19622]: Child (6907) died signal=6 Jan 9 19:40:33 ece-fe1 /var/lib/varnish/persistent[19622]: Child (6907) Panic message: Assert error in smp_open(), storage_persistent.c line 320:#012 Condition((smp_valid_silo(sc)) == 0) not true.#012thread = (cache-main)#012ident = Linux,2.6.32-131.2.1.el6.x86_64,x86_64,-spersistent,-smalloc,-hcritbit,no_waiter#012Backtrace:#012 0x42c7a6: /usr/sbin/varnishd() [0x42c7a6]#012 0x44756a: /usr/sbin/varnishd() [0x44756a]#012 0x444d57: /usr/sbin/varnishd(STV_open+0x27) [0x444d57]#012 0x42b525: /usr/sbin/varnishd(child_main+0xc5) [0x42b525]#012 0x43d5ec: /usr/sbin/varnishd() [0x43d5ec]#012 0x43de7c: /usr/sbin/varnishd() [0x43de7c]#012 0x7f92015684c7: /usr/lib64/varnish/libvarnish.so(+0x94c7) [0x7f92015684c7]#012 0x7f9201568b58: /usr/lib64/varnish/libvarnish.so(vev_schedule+0x88) [0x7f9201568b58]#012 0x43d7c2: /usr/sbin/varnishd(MGT_Run+0x132) [0x43d7c2]#012 0x44cacb: /usr/sbin/varnishd(main+0xd1b) [0x44cacb]#012 Jan 9 19:40:33 ece-fe1 /var/lib/varnish/persistent[19622]: Child (-1) said Child starts Jan 9 19:40:33 ece-fe1 /var/lib/varnish/persistent[19622]: Child (-1) said CHK(0x7f91ffd26120 BAN 1 0x7f34723f4000 BAN 1) = 4 Jan 9 19:40:33 ece-fe1 /var/lib/varnish/persistent[19622]: Child (-1) said CHK(0x7f91ffd261a0 BAN 2 0x7f34724f4000 <invalid>) = 1


Is this an known problem?
Are there work a rounds to use persistent Varnish together with lurkers?

Best regards
Roland


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