Re: What's that utility to monitor disk i/o again?
On Sun, Dec 20, 2009 at 6:51 PM, Roberto Ragusa m...@robertoragusa.it wrote: Marcel Rieux wrote: mount a /sys/kernel/debug -t debugfs [...] All references at Google's, only 9 of them, say mount a. How come it's not mount -a a is the device containing the filesystem. For this kind of filesystem it is unused so you can put everything there (the same happens for tmpfs, proc, sysfs, devpts). 1. Manually mount after each boot: % mount -t debugfs debugfs /sys/kernel/debug In this case the second debugfs could have been a or whatever else. I see. Thanks! -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: What's that utility to monitor disk i/o again?
On 12/19/2009 05:54 PM, Marcel Rieux wrote: On Sat, Dec 19, 2009 at 6:37 PM, Marcel Rieuxm.z.ri...@gmail.com wrote: I installed it about 2 days ago but it seems the upgrade to F12 destroyed the yum.log without making any back-up. BTW, I'm not talking about iotop. blktrace? # yum install blktrace # mount a /sys/kernel/debug -t debugfs # btrace -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: What's that utility to monitor disk i/o again?
On Sun, Dec 20, 2009 at 10:01 AM, Michael Cronenworth m...@cchtml.com wrote: On 12/19/2009 05:54 PM, Marcel Rieux wrote: On Sat, Dec 19, 2009 at 6:37 PM, Marcel Rieuxm.z.ri...@gmail.com wrote: I installed it about 2 days ago but it seems the upgrade to F12 destroyed the yum.log without making any back-up. BTW, I'm not talking about iotop. blktrace? Yes. # yum install blktrace # mount a /sys/kernel/debug -t debugfs # btrace I see no allusion to: mount a /sys/kernel/debug -t debugfs in the man page. What is it for? OTOH, without it: btrace /dev/sda Invalid debug path /sys/kernel/debug: 0/Success All references at Google's, only 9 of them, say mount a. How come it's not mount -a Here's another suggestion: Mounting the debugfs file system blktrace utilizes files under the debug file system, and thus must have the mount point set up - mounted on the directory /sys/kernel/debug. To do this one may do either of the following: 1. Manually mount after each boot: % mount -t debugfs debugfs /sys/kernel/debug 2. Add an entry into /etc/fstab, and have it done automatically at each boot1: debug /sys/kernel/debug debugfs default 0 0 http://www.cse.unsw.edu.au/~aaronc/iosched/doc/blktrace.html Why isn't this line always in /etc/fstab? Is there any security risk? And, err... in the end, if one's purpose is only to monitor a disk i/o, isn't iotop as good a solution? Excuse all the questions. I'm trying to learn more about your suggestion. -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: What's that utility to monitor disk i/o again?
Marcel Rieux wrote: mount a /sys/kernel/debug -t debugfs [...] All references at Google's, only 9 of them, say mount a. How come it's not mount -a a is the device containing the filesystem. For this kind of filesystem it is unused so you can put everything there (the same happens for tmpfs, proc, sysfs, devpts). 1. Manually mount after each boot: % mount -t debugfs debugfs /sys/kernel/debug In this case the second debugfs could have been a or whatever else. -- Roberto Ragusamail at robertoragusa.it -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: What's that utility to monitor disk i/o again?
On Sat, Dec 19, 2009 at 6:37 PM, Marcel Rieux m.z.ri...@gmail.com wrote: I installed it about 2 days ago but it seems the upgrade to F12 destroyed the yum.log without making any back-up. BTW, I'm not talking about iotop. -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: What's that utility to monitor disk i/o again?
On 12/19/2009 06:54 PM, Marcel Rieux wrote: On Sat, Dec 19, 2009 at 6:37 PM, Marcel Rieuxm.z.ri...@gmail.com wrote: I installed it about 2 days ago but it seems the upgrade to F12 destroyed the yum.log without making any back-up. BTW, I'm not talking about iotop. You are probably looking for atop. Will -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: What's that utility to monitor disk i/o again?
On Sat, Dec 19, 2009 at 7:59 PM, William Witt will...@witt-family.net wrote: On 12/19/2009 06:54 PM, Marcel Rieux wrote: On Sat, Dec 19, 2009 at 6:37 PM, Marcel Rieuxm.z.ri...@gmail.com wrote: I installed it about 2 days ago but it seems the upgrade to F12 destroyed the yum.log without making any back-up. BTW, I'm not talking about iotop. You are probably looking for atop. No. -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
