[lxc-devel] [PATCH] tests: Introduce lxc-test-concurrent for testing basic actions concurrently

[S.Çağlar Onur]

Hi Dwight,

Yes, I only observed a hang so far but not this assertion (in fact I don't
remember ever seeing that). What I'm seeing is this;

* lxc-test-concurrent get stuck

[caglar at qgq:~] sudo lxc-test-concurrent
Executing (create) for 5 containers...

* ps auwxf shows this (so no rsync etc. running anymore)

caglar   21004  0.2  0.2  51344  4868 ?        S    11:59   0:00
mosh-server new -s -c 256 -l LANG=en_US.UTF-8
caglar   21005  0.0  0.2  23068  4412 pts/2    Ss   11:59   0:00  \_ -bash
root     27347  0.0  0.1  60248  2080 pts/2    S+   12:03   0:00      \_
sudo lxc-test-concurrent
root     27348  0.0  0.0 383816   884 pts/2    Sl+  12:03   0:00
 \_ lxc-test-concurrent
root     27354  0.0  0.0 381684   408 pts/2    S+   12:03   0:00
   \_ lxc-test-concurrent

* strace give this

[caglar at qgq:~/Projects/lxc(staging)] sudo strace -p 27354
Process 27354 attached - interrupt to quit
futex(0x7fdc68b82cc0, FUTEX_WAIT_PRIVATE, 2, NULL^C <unfinished ...>
Process 27354 detached
[caglar at qgq:~/Projects/lxc(staging)] sudo strace -p 27348
Process 27348 attached - interrupt to quit
futex(0x7fdc65f3d9d0, FUTEX_WAIT, 27353, NULL^C <unfinished ...>
Process 27348 detached
[caglar at qgq:~/Projects/lxc(staging)] sudo strace -p 27347
Process 27347 attached - interrupt to quit
select(6, [3 5], [], NULL, NULL^C <unfinished ...>
Process 27347 detached

* lxc-ls

[caglar at qgq:~/Projects/lxc(staging)] sudo lxc-ls --fancy
NAME       STATE    IPV4  IPV6
------------------------------
0          STOPPED  -     -
1          STOPPED  -     -
2          STOPPED  -     -
3          STOPPED  -     -
4          STOPPED  -     -

* /var/lib/lxc/4/partial still there

[caglar at qgq:/var/lib/lxc] ls /var/lib/lxc/*
/var/lib/lxc/lxc-monitord.log

/var/lib/lxc/0:
config  fstab  rootfs

/var/lib/lxc/1:
config  fstab  rootfs

/var/lib/lxc/2:
config  fstab  rootfs

/var/lib/lxc/3:
config  fstab  rootfs

/var/lib/lxc/4:
config  partial  rootfs

/var/lib/lxc/bleach:
config  fstab  lxc_snapshots  rootfs

/var/lib/lxc/bleach-ng:
config  delta0  fstab  lxc_rdepends  rootfs
​
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