Let's populate /blah with 50Mb files and send SIGINFO to cp(1) process while copying it over nfsv3. # uname -vm FreeBSD 8.0-BETA1 #0: Sat Jul 4 03:55:14 UTC 2009 root_at_almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386 # mkdir /blah # truncate -s50m /blah/foo_1 # truncate -s50m /blah/foo_2 # truncate -s50m /blah/foo_3 # echo /usr >/etc/exports # /etc/rc.d/nfsd onestart # mount -t newnfs -o nfsv3 0:/blah /mnt # cp -R /mnt /aaa [type ^T several times] load: 0.81 cmd: cp 2305 [runnable] 1.86r 0.00u 0.62s 9% 1304k /mnt/foo_1 -> /aaa/foo_1 25% load: 0.90 cmd: cp 2305 [runnable] 2.43r 0.00u 0.80s 9% 1304k /mnt/foo_1 -> /aaa/foo_1 32% load: 0.90 cmd: cp 2305 [runnable] 2.59r 0.00u 0.85s 19% 1304k /mnt/foo_1 -> /aaa/foo_1 34% load: 0.90 cmd: cp 2305 [runnable] 2.76r 0.01u 0.89s 19% 1304k /mnt/foo_1 -> /aaa/foo_1 36% load: 0.90 cmd: cp 2305 [runnable] 2.96r 0.02u 0.94s 19% 1304k /mnt/foo_1 -> /aaa/foo_1 39% load: 0.90 cmd: cp 2305 [runnable] 3.14r 0.02u 1.00s 19% 1304k /mnt/foo_1 -> /aaa/foo_1 41% load: 0.90 cmd: cp 2305 [newnfsreq] 3.30r 0.02u 1.05s 19% 1304k load: 0.90 cmd: cp 2305 [runnable] 3.47r 0.02u 1.08s 19% 1304k load: 0.90 cmd: cp 2305 [runnable] 3.62r 0.02u 1.11s 19% 1304k load: 0.90 cmd: cp 2305 [runnable] 3.81r 0.02u 1.14s 19% 1304k load: 0.90 cmd: cp 2305 [runnable] 3.98r 0.02u 1.17s 19% 1304k load: 0.90 cmd: cp 2305 [runnable] 4.29r 0.02u 1.22s 19% 1304k load: 1.23 cmd: cp 2305 [runnable] 4.84r 0.02u 1.35s 19% 1304k load: 1.23 cmd: cp 2305 [runnable] 5.19r 0.02u 1.49s 19% 1304k load: 1.23 cmd: cp 2305 [runnable] 5.52r 0.02u 1.63s 19% 1304k load: 1.23 cmd: cp 2305 [runnable] 6.12r 0.02u 1.88s 19% 1304k load: 1.23 cmd: cp 2305 [runnable] 6.52r 0.02u 2.05s 19% 1304k load: 1.23 cmd: cp 2305 [runnable] 6.89r 0.02u 2.19s 19% 1304k load: 1.69 cmd: cp 2305 [runnable] 7.40r 0.02u 2.40s 29% 1304k load: 1.69 cmd: cp 2305 [runnable] 7.76r 0.02u 2.55s 29% 1304k load: 1.69 cmd: cp 2305 [runnable] 8.11r 0.02u 2.70s 29% 1304k cp: /mnt/foo_1: Permission denied cp: /mnt/foo_2: Permission denied cp: /mnt/foo_3: Permission denied This one should be slightly harder to reproduce. And depending on timing between each ^T keypress error message can differ, e.g. `Bad address' or `Input/output error'. Of course not all files end up in /aaa # ls -l /aaa total 32912 -rw-r--r-- 1 root wheel 33685504 Jul 16 20:26 foo_1 (this file is from different attempt, not that was aborted around 41%) It affects both foreground and background processes. So, to abort copying one can also try running # pkill -INFO cp several times. I haven't found any other signal that affect copying (tried SIGURG, SIGCONT, SIGCHLD, SIGIO, SIGWINCH). Known? Or am I the only one having a bad habit typing ^T too often?Received on Thu Jul 16 2009 - 18:33:12 UTC
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