I have just upgraded a couple of my caches from version 2.1 to 3.0.3 (
using centos5 RPMs).
I notice that I'm getting a lot of crashes (about twice an hour on a
lightly loaded machine) when previously I had none.
My crashes all look like:
Nov 7 20:21:13 harvest varnishd[3290]: Child (5139) died signal=6
Nov 7 20:21:13 harvest varnishd[3290]: Child (5139) Panic message:
Assert error in VRT_r_req_backend_healthy(), cache_vrt_var.c line 539:
Condition((sp->director) != NULL) not true. thread = (cache-worker) ident
= Linux,2.6.18-308.16.1.el5,x86_64,-sfile,-smalloc,-hcritbit,epoll
Backtrace: 0x42dc76: /usr/sbin/varnishd [0x42dc76] 0x438803:
/usr/sbin/varnishd(VRT_r_req_backend_healthy+0xd3) [0x438803]
0x2aaaba6037dc: ./vcl.pi3D54nW.so [0x2aaaba6037dc] 0x434626:
/usr/sbin/varnishd(VCL_deliver_method+0x46) [0x434626] 0x4179b3:
/usr/sbin/varnishd [0x4179b3] 0x418938:
/usr/sbin/varnishd(CNT_Session+0x8a8) [0x418938] 0x42f706:
/usr/sbin/varnishd [0x42f706] 0x3acc80677d: /lib64/libpthread.so.0
[0x3acc80677d] 0x3acb8d3c1d: /lib64/libc.so.6(clone+0x6d) [0x3acb8d3c1d]
sp = 0x2aaac7924008 { fd = 167, id = 167, xid = 121392249, client =
178.128.200.204 64256, step = STP_PREPRESP, handling = deliver,
restarts = 0, esi_level = 0 flags = bodystatus = 3 ws =
0x2aaac7924080 { id = "sess
Nov 7 20:21:13 harvest varnishd[3290]: child (5444) Started
Nov 7 20:21:13 harvest varnishd[3290]: Child (5444) said Child starts
Nov 7 20:21:13 harvest varnishd[3290]: Child (5444) said SMF.s0 mmap'ed
262144000 bytes of 262144000
Searching Around I came across this thread:
http://www.gossamer-threads.com/lists/varnish/bugs/25391
but couldn't find an actual bug that matched to it.
The servers are on the far side of the world from the origin so I would
expect the odd heath failure, they are faily lightly loaded though ( only
a couple of hundred hits/second max) My vcl_deliver looks like:
-------------------
# vcl_deliver Body
#
if (resp.http.magicmarker) {
/* Remove the magic marker */
unset resp.http.magicmarker;
/* By definition we have a fresh object */
set resp.http.originalage = resp.http.Age;
set resp.http.Age = "0";
}
# Create temp variable header
if (req.backend.healthy) {
set resp.http.Backend-Healthy = "yes" ;
} else {
set resp.http.Backend-Healthy = "no" ;
}
# Debugging
set resp.http.Cache-Info = "Object-Age=" + resp.http.originalage + " hits=" + obj.hits + "
Cache-Host=" + server.hostname + " Backend-Host=" + req.backend + "healthy=" +
resp.http.Backend-Healthy ;
# Tidy some headers
unset resp.http.X-Varnish;
unset resp.http.Via;
unset resp.http.originalage;
unset resp.http.Age;
unset resp.http.Backend-Healthy;
-------------------
My backend probes mostly look like:
-----
backend xx_xxx121 {
.host = "xx.xx.xx.xx";
.host_header = "www.xx.xx";
.port = "80";
.probe = {
.url = "/";
.timeout = 5s;
.interval = 10s;
.window = 10;
.threshold = 6;
.initial = 5;
}
}
----
--
Simon Lyall | Very Busy | Web: http://www.darkmere.gen.nz/
"To stay awake all night adds a day to your life" - Stilgar | eMT.
_______________________________________________
varnish-misc mailing list
[email protected]
https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
