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Re: Monitoring FS operations



Jérôme Petazzoni wrote:
Without going into the specific reasons why I need to do so, is anyone
aware of a method (or tool) of watching real-time, human-readable (or
system call print) of ext3 filesystem operations on a mounted, active
filesystem?


Look for the lm-profiler tool in the "laptop-mode" tools. It does
(almost) that :

modprobe(18534): dirtied inode 457921 (irda-utils) on sda2
modprobe(18534): dirtied inode 457920 (bluez) on sda2
modprobe(18534): dirtied inode 49330 (display_class) on sda2
modprobe(18534): dirtied inode 461377 (zaptel) on sda2
modprobe(18534): dirtied inode 58905 (blacklist) on sda2
modprobe(18534): dirtied inode 180040 (blacklist.d) on sda2
modprobe(18534): dirtied inode 1046702 (modules.dep) on sda2
dmesg(18537): dirtied inode 1030298 (dmesg_next) on sda2
dmesg(18572): dirtied inode 1030322 (dmesg_next) on sda2
dmesg(18597): dirtied inode 1030298 (dmesg_next) on sda2
dmesg(18624): dirtied inode 1030322 (dmesg_next) on sda2
modprobe(18650): dirtied inode 1046617 (modules.alias) on sda2
dmesg(18653): dirtied inode 1030298 (dmesg_next) on sda2
dmesg(18682): dirtied inode 1030322 (dmesg_next) on sda2
dmesg(18711): dirtied inode 1030298 (dmesg_next) on sda2
dmesg(18740): dirtied inode 1030322 (dmesg_next) on sda2
nmbd(4821): dirtied inode 572609 (browse.dat.) on sda2
nmbd(4821): dirtied inode 573668 (?) on sda2
pdflush(164): WRITE block 7177944 on sda2
pdflush(164): WRITE block 20070920 on sda2
pdflush(164): WRITE block 16035888 on sda2
pdflush(164): WRITE block 16035896 on sda2
lm-profiler(18769): dirtied inode 33606 (dmesg) on sda2
dmesg(18769): dirtied inode 964795 (locale-archive) on sda2
dmesg(18769): dirtied inode 1030298 (dmesg_next) on sda2
lm-profiler(18772): dirtied inode 360165 (diff) on sda2

That may or may not be what you want, however !

regards

Thanks. That's a good start. Not what I was after but I'll see what it gives me on my box. I'm looking for something like "Filemon" from sysinternals.com (for Windows) - something that shows every operation sent to the FS driver.

Thanks again.

Kevin Strong
Criminal Information Network


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