Re: [gentoo-user] How to find out to what file(...) writes goes on a idle system...
Hi, meino.cra...@gmx.de writes: In the context of preserving the live of flash media by minimizing the count of unessary writes I want to know which application/daemon/etc is continous writing to that media and which entity (file/pipe/fifo...) is receiving those writes... You could use this: # echo 1 /proc/sys/vm/block_dump then every read and write operation on block devices shows up in dmesg with the PID, process name and the block id. (This can be a lot of lines, so dmesg -c might be useful) I'm not exactly sure how to identify which files belong to which block, though. Regards Johannes signature.asc Description: PGP signature
Re: [gentoo-user] How to find out to what file(...) writes goes on a idle system...
On Sat, 06 Dec 2014 12:01:16 +0100 Johannes Altmanninger wrote: Hi, meino.cra...@gmx.de writes: In the context of preserving the live of flash media by minimizing the count of unessary writes I want to know which application/daemon/etc is continous writing to that media and which entity (file/pipe/fifo...) is receiving those writes... You could use this: # echo 1 /proc/sys/vm/block_dump then every read and write operation on block devices shows up in dmesg with the PID, process name and the block id. (This can be a lot of lines, so dmesg -c might be useful) I'm not exactly sure how to identify which files belong to which block, though. This depends on filesystem being used. For ext* family debugfs may be used: # debugfs /dev/your_dev ncheck inode1 inode2 ... Best regards, Andrew Savchenko pgpTSVfkHacd7.pgp Description: PGP signature
Re: [gentoo-user] How to find out to what file(...) writes goes on a idle system...
meino.cra...@gmx.de writes: Hi, on different systems I see the write stats (/proc/dikstats) to physical existing disks steadily increasing. Looking at the output of lsof I cannot find any file suspicous for receiving those writes. In the context of preserving the live of flash media by minimizing the count of unessary writes I want to know which application/daemon/etc is continous writing to that media and which entity (file/pipe/fifo...) is receiving those writes... How can I find that information? iotop might tell you. Since you don't see anything in lsof, I'd assume that the file (if it's a file) is opened and closed rather than being kept open. Or could it be a swap partition which is used? -- Again we must be afraid of speaking of daemons for fear that daemons might swallow us. Finally, this fear has become reasonable.
Re: [gentoo-user] How to find out to what file(...) writes goes on a idle system...
On Sat, Dec 06, 2014 at 12:27:06PM +0100, lee wrote: meino.cra...@gmx.de writes: Hi, on different systems I see the write stats (/proc/dikstats) to physical existing disks steadily increasing. Looking at the output of lsof I cannot find any file suspicous for receiving those writes. […] How can I find that information? iotop might tell you. I frequently use iotop -o. Another possibility might be ftop. -- Gruß | Greetings | Qapla’ Please do not share anything from, with or about me on any social network. “Your code is shit.. your argument is shit.” – Linus Torvalds, linux.kernel signature.asc Description: Digital signature
