Less known Solaris features: pfiles

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Less known Solaris features: pfiles

Tuesday, March 18. 2008

This is not a tutorial, just a hint from my toolbox. On customer systems i see the lsof tool quite often. But for a quick check for open files you dont need it.

There is a small, but extremly useful tool in the collection of the p*-tools. pfiles prints all open files of a process. It takes the PID of the process to specify the process.

# pfiles 214 214: /usr/lib/inet/in.iked Current rlimit: 256 file descriptors 0: S_IFDIR mode:0755 dev:102,0 ino:2 uid:0 gid:0 size:512 O_RDONLY|O_LARGEFILE / 1: S_IFDIR mode:0755 dev:102,0 ino:2 uid:0 gid:0 size:512 O_RDONLY|O_LARGEFILE / 2: S_IFDIR mode:0755 dev:102,0 ino:2 uid:0 gid:0 size:512 O_RDONLY|O_LARGEFILE / 3: S_IFREG mode:0600 dev:102,0 ino:28994 uid:0 gid:0 size:47372 O_RDWR|O_APPEND|O_CREAT|O_LARGEFILE /var/log/in.iked.log 4: S_IFSOCK mode:0666 dev:304,0 ino:48934 uid:0 gid:0 size:0 O_RDWR|O_NONBLOCK SOCK_RAW SO_SNDBUF(8192),SO_RCVBUF(8192) sockname: AF_INET 10.211.55.200 port: 4500 peername: AF_INET 10.211.55.200 port: 4500 [..] 10: S_IFDOOR mode:0777 dev:306,0 ino:0 uid:0 gid:0 size:0 O_RDWR FD_CLOEXEC door to in.iked[214]

And with the xarg tool there is an easy way to print out all open files on the system.

# ps -ef -o pid | sort | xargs pfiles | more 0: sched [system process] 1: /sbin/init Current rlimit: 256 file descriptors 0: S_IFIFO mode:0600 dev:301,3 ino:448255748 uid:0 gid:0 size:0 O_RDWR|O_NDELAY /var/run/initpipe 253: S_IFREG mode:0444 dev:298,1 ino:65538 uid:0 gid:0 size:0 O_RDONLY|O_LARGEFILE FD_CLOEXEC /system/contract/process/pbundle 254: S_IFREG mode:0666 dev:298,1 ino:65539 uid:0 gid:0 size:0 O_RDWR|O_LARGEFILE FD_CLOEXEC /system/contract/process/template 255: S_IFREG mode:0666 dev:298,1 ino:65539 uid:0 gid:0 size:0 O_RDWR|O_LARGEFILE FD_CLOEXEC /system/contract/process/template [...]

Posted by Joerg Moellenkamp in Solaris at 19:27 | Comments (2)

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Das Tool gibt es inzwischen in einer brauchbaren Form mit Ausgabe des Pfades. Was immer noch fehlt ist die Umkehrvariante pprocs die anzeigt, welche Prozesse eine Datei benutzen, bzw. ein Verzeichnis als CWD haben.
Hier würde schon eine Option bei pfiles reichen, die jede Zeile mit der process id dekoriert, dann kann man das mit pfiles ... | grep recht gut erledigen.

#1 Knut Grunwald on 2008-03-19 17:09

Die Umkehrvariante heisst fuser.

#1.1 Robert Dahlem on 2008-03-21 11:10

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