9:58 a.m.
Hariharan S Reddy wrote:
Hi Dave,
I am here with submitting the patch to incorporate -f option to carsh ps
command. Which will display as same as ps command with command line
arguments.
...and which basically duplicates the current capability of the "ps -a" option,
which does its best to gather the full command line along with the task's
environment variables.
The problem is that it depends upon accessing user-space memory which may
not be available, i.e., either swapped out or configured out of the dumpfile
entirely. That makes the output really ugly -- for example on the live
system that I'm running on:
crash> ps -f
PID PPID CPU TASK ST %MEM VSZ RSS COMM
0 0 0 c066d3c0 RU 0.0 0 0 [swapper]
0 1 1 c148e550 RU 0.0 0 0 [swapper]
1 0 1 c148eaa0 IN 0.1 2040 564 init [5]
2 1 0 c148e000 IN 0.0 0 0 [migration/0]
3 1 0 c14a0aa0 IN 0.0 0 0 [ksoftirqd/0]
4 1 0 c14a0550 IN 0.0 0 0 [watchdog/0]
5 1 1 c14a0000 IN 0.0 0 0 [migration/1]
6 1 1 c14adaa0 IN 0.0 0 0 [ksoftirqd/1]
7 1 1 c14ad550 IN 0.0 0 0 [watchdog/1]
8 1 0 c14ad000 IN 0.0 0 0 [events/0]
9 1 1 dff63aa0 IN 0.0 0 0 [events/1]
10 1 1 dff63550 IN 0.0 0 0 [khelper]
11 1 0 dff63000 IN 0.0 0 0 [kthread]
15 11 0 dff31aa0 IN 0.0 0 0 [kblockd/0]
16 11 1 dff31550 IN 0.0 0 0 [kblockd/1]
17 11 1 dff31000 IN 0.0 0 0 [kacpid]
96 11 0 dff4b550 IN 0.0 0 0 [cqueue/0]
97 11 1 dff4b000 IN 0.0 0 0 [cqueue/1]
100 11 0 dff09550 IN 0.0 0 0 [khubd]
102 11 0 dff13550 IN 0.0 0 0 [kseriod]
163 11 0 dfe0a550 IN 0.0 0 0 [pdflush]
164 11 1 dfe0a000 IN 0.0 0 0 [pdflush]
165 11 0 dfe0daa0 IN 0.0 0 0 [kswapd0]
166 11 0 dfe0d550 IN 0.0 0 0 [aio/0]
167 11 1 dfe0d000 IN 0.0 0 0 [aio/1]
331 11 0 dfe02aa0 IN 0.0 0 0 [kpsmoused]
362 11 0 dfeb8000 IN 0.0 0 0 [ata/0]
363 11 1 dfeb8550 IN 0.0 0 0 [ata/1]
364 11 0 dfeb8aa0 IN 0.0 0 0 [ata_aux]
380 11 0 dfea4550 IN 0.0 0 0 [ksnapd]
383 11 0 dfbf1550 IN 0.0 0 0 [kjournald]
416 11 1 dfe53aa0 IN 0.0 0 0 [kauditd]
450 1 1 dff03000 IN 0.1 2944 404 /sbin/udevd -d
896 11 0 df2ae000 IN 0.0 0 0 [kedac]
1558 11 0 dde7faa0 IN 0.0 0 0 [kmpathd/0]
1559 11 1 ddccd000 IN 0.0 0 0 [kmpathd/1]
1583 11 0 de2f9000 IN 0.0 0 0 [kjournald]
1970 1 0 dfbfbaa0 IN 0.1 2288 528 /sbin/dhclient -1 -q -lf
/var/lib/dhclient/dhclient-eth0.l
eases -pf /var/run/dhclient-eth0.pid eth0
2022 1 0 dd42daa0 IN 0.1 12076 552 ps: cannot access user
stack address: bfc30ec5
2023 1 0 dddfe000 IN 0.1 12076 552 ps: cannot access user
stack address: bfc30ec5
2024 2022 0 ddfc8000 IN 0.4 10096 2096 python /sbin/audispd
2039 1 1 ddd52000 IN 0.1 10080 372 ps: cannot access user
stack address: bfb0eeff
2050 1 1 de788000 IN 0.1 1700 532 ps: cannot access user
stack address: bf877f11
2053 1 0 de1ba000 IN 0.1 1656 388 klogd -x
2065 1 1 df1ef000 IN 0.1 2412 332 irqbalance
2081 1 0 de15b000 IN 0.1 2136 440 mcstransd
2094 1 0 dfe64550 IN 0.1 1788 572 portmap
2107 1 1 ddb6aaa0 RU 1.1 41628 5576 ps: cannot access user
stack address: bff97ee0
2128 1 1 dfebd000 IN 0.1 1940 712 ps: cannot access user
stack address: bf8b4f10
2165 1 1 dddfeaa0 IN 0.1 5400 380 ps: cannot access user
stack address: bfd6ef05
2184 1 1 dddfe550 IN 0.2 13216 1300 dbus-daemon --system
2185 1 0 dfea4aa0 IN 0.2 13216 1300 dbus-daemon --system
2223 1 0 ddb0aaa0 IN 0.2 53728 940 pcscd
2238 1 1 de1ba550 IN 0.2 53728 940 pcscd
2255 1 1 dfbf5550 IN 0.1 1888 344 ps: cannot access user
stack address: bfa6ff07
2274 1 1 ddaf4550 IN 1.1 41628 5576 ps: cannot access user
stack address: bff97ee0
2275 1 1 dd79baa0 IN 1.1 41628 5576 ps: cannot access user
stack address: bff97ee0
2281 1 0 dfbf1aa0 IN 0.1 24376 380 ps: cannot access user
stack address: bfea7f19
2282 1 1 dd629550 IN 0.1 24376 380 ps: cannot access user
stack address: bfea7f19
2284 1 0 ddb6a550 IN 0.1 24376 380 ps: cannot access user
stack address: bfea7f19
2305 1 0 de1baaa0 IN 0.2 18948 1296 automount
2306 1 0 dd9ad550 IN 0.2 18948 1296 automount
2307 1 1 dece8000 IN 0.2 18948 1296 automount
2310 1 0 ddb6a000 IN 0.2 18948 1296 automount
2313 1 0 df2ae550 IN 0.2 18948 1296 automount
2314 1 1 de75d550 IN 0.2 18948 1296 automount
2315 1 0 dfebdaa0 IN 0.2 18948 1296 automount
2316 1 0 df2aeaa0 IN 0.2 18948 1296 automount
2327 1 0 de07b000 IN 0.1 1652 424 ps: cannot access user
stack address: bf806f0a
2338 1 0 de21d550 IN 0.1 5068 300 ps: cannot access user
stack address: bf94af1a
2343 1 1 dfbf5000 IN 0.2 13192 1224 ps: cannot access user
stack address: bfd07efe
2358 1 1 dff09000 IN 0.1 6148 576 ps: cannot access user
stack address: bfc57f0d
2369 1 1 dd79b550 IN 0.3 9880 1628 ps: cannot access user
stack address: bfd7df14
2383 1 0 ddaf4000 IN 0.8 4448 4448 ntpd -u ntp:ntp -p
/var/run/ntpd.pid -g
2404 1 1 df1efaa0 IN 0.2 9032 968 sendmail: accepting connecti
2413 1 1 dfbf5aa0 IN 0.1 8084 724 ps: cannot access user
stack address: bf990ee8
2425 1 1 dff13aa0 IN 0.1 1876 276 ps: cannot access user
stack address: bf9fbefe
2436 1 0 de21d000 IN 0.1 5240 708 crond
2467 1 0 de07baa0 IN 0.2 4044 960 xfs -droppriv -daemon
2488 1 0 dd414000 IN 0.1 2220 340 ps: cannot access user
stack address: bfc30f10
...
Not to mention that it violates the 80-column output that I try to
enforce with most commands.
Dave
Sample output of normal ps in crash
crash> ps
PID PPID CPU TASK ST %MEM VSZ RSS COMM
0 0 0 33a4c8 RU 0.0 0 0 [swapper]
0 1 1 f85a718 RU 0.0 0 0 [swapper]
2357 1 0 e8575c8 IN 0.1 11320 344 dbus-daemon
2358 1 1 ede30f0 IN 0.1 11320 344 dbus-daemon
2394 1 0 e87aa18 IN 0.2 75280 496 automount
2395 1 0 eea2718 IN 0.2 75280 496 automount
2396 1 1 fa4d7c8 IN 0.2 75280 496 automount
2399 1 0 eec6ff0 IN 0.2 75280 496 automount
2402 1 1 ee3b7c8 IN 0.2 75280 496 automount
2415 1 0 e9a6818 IN 0.0 7200 44 sshd
2425 1 0 eea0a18 IN 0.5 94944 1396
setroubleshootd
2426 1 1 ede2340 IN 0.5 94944 1396
setroubleshootd
2427 1 0 ee06140 IN 0.0 64452 28 cupsd
2446 1 0 fa336c8 IN 0.2 10464 476 sendmail
2456 1 0 ee3b0f0 IN 0.2 9320 416 sendmail
2468 1 0 ee5f5c8 IN 0.1 58628 188 crond
2491 1 1 ef417c8 IN 0.0 4516 80 xfs
2513 1 0 e8fe340 IN 0.1 2548 200 atd
2525 1 1 e982340 IN 2.7 87636 7112 yum-updatesd
Sample output of ps -f in crash
crash> ps -f
PID PPID CPU TASK ST %MEM VSZ RSS COMM
0 0 0 33a4c8 RU 0.0 0 0 [swapper]
0 1 1 f85a718 RU 0.0 0 0 [swapper]
1914 2 0 ee054c8 IN 0.0 0 0 [kjournald]
2210 1 1 fab4040 IN 0.1 10300 280 auditd
2211 1 0 e8ff7c8 IN 0.1 10300 280 auditd
2212 2210 1 eea34c8 IN 0.4 65244 992 python
/sbin/audispd
2213 2 1 ee5cdf0 IN 0.0 0 0 [kauditd]
2227 1 0 e878ff0 IN 0.0 15544 84
/usr/sbin/restorecond
2237 1 1 fa26140 IN 0.1 1976 188 syslogd -m 0
2240 1 1 eec55c8 IN 0.0 1908 16 klogd -x
2255 1 0 ef434c8 IN 0.1 2468 248 mcstransd
2267 1 0 f980818 IN 0.0 2088 12 portmap
2282 1 1 e854718 IN 0.5 94944 1396
/usr/bin/python -E /usr/sbin/setroubleshootd
2302 1 0 e9e90f0 IN 0.0 2096 16 rpc.statd
2332 2 0 f96e718 IN 0.0 0 0 [rpciod/0]
2333 2 1 ee5e818 IN 0.0 0 0 [rpciod/1]
2340 1 1 ef40340 IN 0.0 6256 52 rpc.idmapd
2357 1 0 e8575c8 IN 0.1 11320 344 dbus-daemon
--system
2358 1 1 ede30f0 IN 0.1 11320 344 dbus-daemon
--system
2394 1 0 e87aa18 IN 0.2 75280 496 automount
2395 1 0 eea2718 IN 0.2 75280 496 automount
2396 1 1 fa4d7c8 IN 0.2 75280 496 automount
2399 1 1 eec6ff0 IN 0.2 75280 496 automount
2402 1 1 ee3b7c8 IN 0.2 75280 496 automount
2415 1 0 e9a6818 IN 0.0 7200 44
/usr/sbin/sshd
2425 1 0 eea0a18 IN 0.5 94944 1396
/usr/bin/python -E /usr/sbin/setroubleshootd
2426 1 1 ede2340 IN 0.5 94944 1396
/usr/bin/python -E /usr/sbin/setroubleshootd
2427 1 0 ee06140 IN 0.0 64452 28 cupsd
2446 1 0 fa336c8 IN 0.2 10464 476 sendmail:
accepting connecti
2456 1 0 ee3b0f0 IN 0.2 9320 416 sendmail:
Queue runner@01:00:00 for /var/spo
2468 1 0 ee5f5c8 IN 0.1 58628 188 crond
2491 1 1 ef417c8 IN 0.0 4516 80 xfs
-droppriv -daemon
2513 1 0 e8fe340 IN 0.1 2548 200
/usr/sbin/atd
2525 1 1 e982340 IN 2.7 87636 7112
/usr/bin/python /usr/sbin/yum-updatesd
COMM will be with command line arguments.
Patch : (See attached file: crash-ps-f-opt.patch)
Regards
Hariharan T.S.
System Software Engineer,
zSeries - Red Hat Enterprise Linux,
India Software Lab - IBM Systems & Technology Group,
Embassy Golf Links Business Park, Bangalore, INDIA
Direct +91-80-4177-7545
e-mail: hariharan.ts(a)in.ibm.com
India Software Lab