Disk access LED flashing regularly
Hi,
I have a recent (<2 months) installation of the latest Arch Linux on an AMD64 computer and I have noticed that the HDD access LED flashes shortly every 2-3 secs. My partitions are formatted in Ext4 and this flashing occurs even when I am just in the console and not using the machine.
Is this normal or should I start worrying about rootkits etc?
My thanks in advance.
neok wrote:
Hi,
I have a recent (<2 months) installation of the latest Arch Linux on an AMD64 computer and I have noticed that the HDD access LED flashes shortly every 2-3 secs. My partitions are formatted in Ext4 and this flashing occurs even when I am just in the console and not using the machine.
Is this normal or should I start worrying about rootkits etc?
My thanks in advance.
My thanks for the replies, I tried iotop and enabling block-dump but both will not work, I think its because I am using a custom compiled kernel and I don' have accounting enabled, apparently. But I will be looking into this soon, perhaps rebooting with the Arch kernel.
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[SOLVED] Long time with excessive disk access before system reboot.
I feel I would be grateful for some help here. It's my first go at Arch Linux having used Xubuntu for several years. It may be I'm missing something obvious but then I would be happy if someone could point me in the right direction.
Problem: When I do a system restart by issuing
$ systemctl reboot
I get the following output
Sending SIGTERM to remaining processes...
Sending SIGKILL to remaining processes...
Unmounting file systems.
Unmounted /sys/kernel/debug.
Unmounted /dev/hugepages.
Unmounted /dev/mqueue.
Not all file systems unmounted, 1 left.
Disabling swaps.
Detaching loop devices.
Detaching DM devices.
Unmounting file systems.
Not all file systems unmounted, 1 left.
Cannot finalize remaining filesystems and devices, giving up.
Successfully changed into root pivot.
Unmounting all devices.
Detaching loop devices.
Diassembling stacked devices.
mdadm: stopped /dev/md126
[ 1654.867177] Restarting system.
However, after the last line is printed, the system does not reboot immediately but hangs for about 2 minutes with heavy disk activity. I can't say if it is read or write or both, but the led of my HDD is lit constantly. When this activity stops, the machine reboots.
$ systemctl poweroff
works as expected, i.e. shuts down immediately without excessive disk access.
I see this behaviour both with the installed Arch system and when I run the live installation/recovery CD. It is also the same if I boot into the busybox rescue shell and then restarts the machine from there. It also does not seem to matter if any partition on the disk is is mounted or not, the behaviour is always the same with 2 min. heavy activity before reboot.
System setup:
Sony Vaio VPZ13. Intel Core i5 M460, 4GB ram, 2x64GB SSD in RAID0 configuration via bios setting (a.k.a. fake raid), partitioned like:
windows boot
windows system
linux swap
linux "/"
linux "/home"
So it's a dual boot setup with Windows 7.
The raid array is assembled by mdadm, and I have mdadm_udev among my mkinitcpio.conf hooks (after blocks but before filesystems).
Snip from journalctl log showing actions when reboot has been issued:
jan 18 12:24:23 wione systemd[1]: Stopping Sound Card.
jan 18 12:24:23 wione systemd[1]: Stopped target Sound Card.
jan 18 12:24:23 wione systemd[1]: Stopping Bluetooth.
jan 18 12:24:23 wione systemd[1]: Stopped target Bluetooth.
jan 18 12:24:23 wione systemd[1]: Stopping Graphical Interface.
jan 18 12:24:23 wione systemd[1]: Stopped target Graphical Interface.
jan 18 12:24:23 wione systemd[1]: Stopping Multi-User.
jan 18 12:24:23 wione systemd[1]: Stopped target Multi-User.
jan 18 12:24:23 wione systemd[1]: Stopping Login Prompts.
jan 18 12:24:23 wione systemd[1]: Stopped target Login Prompts.
jan 18 12:24:23 wione systemd[1]: Stopping Getty on tty1...
jan 18 12:24:23 wione systemd[1]: Stopping Login Service...
jan 18 12:24:23 wione login[333]: pam_unix(login:session): session closed for user root
jan 18 12:24:23 wione login[333]: pam_systemd(login:session): Failed to connect to system bus: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
jan 18 12:24:23 wione systemd[1]: Stopped D-Bus System Message Bus.
jan 18 12:24:23 wione systemd[1]: Stopped Getty on tty1.
jan 18 12:24:23 wione systemd[1]: Stopping Permit User Sessions...
jan 18 12:24:23 wione systemd[1]: Stopped Permit User Sessions.
jan 18 12:24:23 wione systemd[1]: Stopped Login Service.
jan 18 12:24:23 wione systemd[1]: Stopping Basic System.
jan 18 12:24:23 wione systemd[1]: Stopped target Basic System.
jan 18 12:24:23 wione systemd[1]: Stopping Dispatch Password Requests to Console Directory Watch.
jan 18 12:24:23 wione systemd[1]: Stopped Dispatch Password Requests to Console Directory Watch.
jan 18 12:24:23 wione systemd[1]: Stopping Daily Cleanup of Temporary Directories.
jan 18 12:24:23 wione systemd[1]: Stopped Daily Cleanup of Temporary Directories.
jan 18 12:24:23 wione systemd[1]: Stopping Sockets.
jan 18 12:24:23 wione systemd[1]: Stopped target Sockets.
jan 18 12:24:23 wione systemd[1]: Stopping D-Bus System Message Bus Socket.
jan 18 12:24:23 wione systemd[1]: Closed D-Bus System Message Bus Socket.
jan 18 12:24:23 wione systemd[1]: Stopping System Initialization.
jan 18 12:24:23 wione systemd[1]: Stopped Setup Virtual Console.
jan 18 12:24:23 wione systemd[1]: Unmounting Temporary Directory...
jan 18 12:24:23 wione systemd[1]: Unmounted Temporary Directory.
jan 18 12:24:23 wione systemd[1]: Unmounted /home.
jan 18 12:24:23 wione systemd[1]: Starting Unmount All Filesystems.
jan 18 12:24:23 wione systemd[1]: Reached target Unmount All Filesystems.
jan 18 12:24:23 wione systemd[1]: Stopping Local File Systems (Pre).
jan 18 12:24:23 wione systemd[1]: Stopped target Local File Systems (Pre).
jan 18 12:24:23 wione systemd[1]: Stopping Remount Root and Kernel File Systems...
jan 18 12:24:23 wione systemd[1]: Stopped Remount Root and Kernel File Systems.
jan 18 12:24:23 wione systemd[1]: Starting Shutdown.
jan 18 12:24:23 wione systemd[1]: Reached target Shutdown.
jan 18 12:24:23 wione systemd[1]: Starting Save Random Seed...
jan 18 12:24:23 wione systemd[1]: Starting Update UTMP about System Shutdown...
jan 18 12:24:23 wione systemd[1]: Started Save Random Seed.
jan 18 12:24:23 wione systemd[1]: Started Update UTMP about System Shutdown.
jan 18 12:24:23 wione systemd[1]: Starting Final Step.
jan 18 12:24:23 wione systemd[1]: Reached target Final Step.
jan 18 12:24:23 wione systemd[1]: Starting Reboot...
jan 18 12:24:23 wione systemd[1]: Shutting down.
jan 18 12:24:23 wione systemd-journal[189]: Journal stopped
-- Reboot --
Since I have used Xubuntu without hassle for several years, I first thought the problem may be related to systemd reboot and something in my system setup. But I have tried the Fedora 17 live CD and rebooting there works as expected. So, since it works in one systemd distro, it should work with Arch as well.
Then I thought that it maybe had something to do with the raid-array, something along the lines of
https://bugzilla.redhat.com/show_bug.cgi?id=752593
https://bugzilla.redhat.com/show_bug.cgi?id=879327
But then I found the shutdown hook for mkinitcpio and now I see that the array is stopped and dissassembled. So thats not the problem either. (Or thats what I guess at least.)
Unfortunately I'm out of ideas. Any help would be grateful.
Last edited by wingbrant (2013-02-02 22:20:20)It turned out that the magic word for me was "reboot=pci" on the kernel command line. With that option set it works lika a charm The machine reboots nice and clean.
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[arnuld@arch ~]$ ps -aux
Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 1588 548 ? Ss Jun29 0:00 init [3]
root 2 0.0 0.0 0 0 ? S Jun29 0:00 [migration/0]
root 3 0.0 0.0 0 0 ? SN Jun29 0:00 [ksoftirqd/0]
root 4 0.0 0.0 0 0 ? S Jun29 0:00 [watchdog/0]
root 5 0.0 0.0 0 0 ? S< Jun29 0:01 [events/0]
root 6 0.0 0.0 0 0 ? S< Jun29 0:00 [khelper]
root 7 0.0 0.0 0 0 ? S< Jun29 0:00 [kthread]
root 30 0.0 0.0 0 0 ? S< Jun29 0:00 [kblockd/0]
root 31 0.0 0.0 0 0 ? S< Jun29 0:00 [kacpid]
root 136 0.0 0.0 0 0 ? S< Jun29 0:00 [kseriod]
root 161 0.0 0.0 0 0 ? S< Jun29 0:01 [kswapd0]
root 162 0.0 0.0 0 0 ? S< Jun29 0:00 [aio/0]
root 300 0.0 0.0 0 0 ? S< Jun29 0:00 [ata/0]
root 301 0.0 0.0 0 0 ? S< Jun29 0:00 [ata_aux]
root 305 0.0 0.0 0 0 ? S< Jun29 0:00 [scsi_eh_0]
root 306 0.0 0.0 0 0 ? S< Jun29 0:00 [scsi_eh_1]
root 323 0.0 0.0 0 0 ? S< Jun29 0:00 [scsi_eh_2]
root 324 0.0 0.0 0 0 ? S< Jun29 0:00 [scsi_eh_3]
root 1117 0.0 0.0 0 0 ? S< Jun29 0:01 [kjournald]
root 1152 0.0 0.0 0 0 ? S< Jun29 0:00 [ksuspend_usbd]
root 1155 0.0 0.0 0 0 ? S< Jun29 0:00 [khubd]
root 1171 0.0 0.0 1768 632 ? S<s Jun29 0:01 /sbin/udevd --daemon
root 1704 0.0 0.0 0 0 ? S< Jun29 0:00 [kgameportd]
root 4639 0.0 0.0 0 0 ? S< Jun29 0:00 [kpsmoused]
root 5453 0.0 0.1 6580 1868 ? Ss Jun29 0:00 /usr/sbin/cupsd
root 5485 0.0 0.0 0 0 ? S< Jun29 0:01 [kjournald]
root 5488 0.0 0.0 0 0 ? S< Jun29 0:00 [kjournald]
root 5538 0.0 0.0 2080 764 ? Ss Jun29 0:00 /usr/sbin/syslog-ng
root 5566 0.0 0.0 1620 556 ? S Jun29 0:00 /usr/sbin/crond
root 5572 0.0 0.0 1588 512 tty3 Ss+ Jun29 0:00 /sbin/agetty 38400 vc/3 linux
root 5573 0.0 0.0 1588 512 tty4 Ss+ Jun29 0:00 /sbin/agetty 38400 vc/4 linux
root 5574 0.0 0.0 1584 508 tty5 Ss+ Jun29 0:00 /sbin/agetty 38400 vc/5 linux
root 5575 0.0 0.0 1584 508 tty6 Ss+ Jun29 0:00 /sbin/agetty 38400 vc/6 linux
root 11282 0.0 0.0 0 0 ? S Jun29 0:00 [pdflush]
root 11789 0.0 0.0 0 0 ? S Jun29 0:00 [pdflush]
root 15018 0.0 0.1 2296 1100 tty2 Ss Jun29 0:00 /bin/login --
arnuld 15031 0.0 0.1 4524 1748 tty2 S Jun29 0:00 -bash
root 16726 0.0 0.1 2296 1096 tty1 Ss Jun29 0:00 /bin/login --
root 16727 0.0 0.1 4264 1720 tty1 S+ Jun29 0:00 -bash
root 19337 0.0 0.1 2600 1160 ? S 00:02 0:00 /bin/sh /usr/sbin/run-cron /etc/cron.daily
root 19529 0.0 0.1 4084 1400 ? S 00:02 0:00 /bin/sh /etc/cron.daily/whatis
root 19534 0.0 0.1 4216 996 ? S 00:02 0:00 /bin/sh /etc/cron.daily/whatis
arnuld 20892 0.0 0.1 4480 1392 tty2 S+ 00:02 0:00 /bin/sh /usr/bin/startx
arnuld 20908 0.0 0.0 2568 716 tty2 S+ 00:02 0:00 xinit /home/arnuld/.xinitrc -- -auth /home/arnuld/.serveraut
root 20909 12.6 1.2 16232 12480 tty7 S<s+ 00:02 0:01 X :0 -auth /home/arnuld/.serverauth.20892
arnuld 21001 0.1 0.1 4564 1652 tty2 S 00:03 0:00 wmiiwm -a unix /tmp/ns.arnuld.:0/wmii -r /etc/wmii-3.5/wmiir
arnuld 21006 0.0 0.0 0 0 ? Zs 00:03 0:00 [wmiirc] <defunct>
arnuld 21020 0.0 0.1 4476 1368 ? S 00:03 0:00 /bin/sh /etc/wmii-3.5/status
arnuld 21054 0.0 0.1 4352 1352 ? S 00:03 0:00 /bin/sh /usr/bin/wmiir read /event
arnuld 21055 0.0 0.0 1600 340 ? S 00:03 0:00 ixpc read /event
arnuld 21056 0.0 0.0 4480 896 ? S 00:03 0:00 /bin/sh /etc/wmii-3.5/wmiirc
root 21228 7.5 0.1 4276 1808 ? S 00:03 0:00 /bin/awk ??? function readline() {?? if (use_zcat ||
arnuld 21417 2.5 0.6 11268 6168 ? S 00:03 0:00 urxvt
arnuld 21480 1.0 0.1 4520 1744 pts/0 Ss 00:03 0:00 -bash
arnuld 21569 0.0 0.0 3060 476 ? S 00:03 0:00 sleep 1
root 21605 0.0 0.0 1804 340 ? R 00:03 0:00 gzip -cd /usr/man/man2/./time.2.gz
arnuld 21606 0.0 0.1 3552 988 pts/0 R+ 00:03 0:00 ps -aux
[arnuld@arch ~]$ f -
When i get a phone call i want to activate the led flash - how?
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Led flash alerts not working in iOS 5
I have turned on led flash notification on and nothing happens when I get phone calls, text, e-mail etc. I have turned off the led setting and then turned it off the phone. I then restarted it and turned the setting back on and nothing happens. The light never goes off. I checked the light and it works fine. Any ideas on how to fix this?
For Everybody Who's Having Issues With The LED FLASHING ALERT On The iPhone 4S, I May Have Promising News For You.
I Just Spent The Last Hour Or So With An Apple Support Tech, Who Then Forwarded Me To A Senior Support Person. I E-Mailed Her This Link So That She Could Research This Issue.
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Is it normal that the disk activity led on the right side of my notebook (a lenovo 3000 N500 4233-5MG)
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Welcome to the HP Forums!
It is a superb place to find answers and ideas!
For you to have the best experience in the HP forum I would like to direct your attention to the HP Forums Guide Learn How to Post and More
I see you recently had the power connector cable replaced and now the LEDS in the lower left do not light up. You are uncomfortable disassembling the notebook. It is most likely a loose or not connected cable as you said. As you just had it repaired I would take it back to the repair shop and advise him of the situation. He should be able to correct it for you.
Here is a link to HP G50 Notebook PC and Compaq Presario CQ50 Notebook PC Maintenance and Service Guide that will go over removal procedures if you would like to attempt this yourself.
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I work on behalf of HP
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N-79 LED FLASH LIGHT & CAMERA PROBLEM
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thank you all.My camera flash started coming on to notify me of new emails. It started after the recent software update.
The solution to get the feature to turn off was to go into Settings... Accessibility... and scroll down to "Flash notification" under the Hearing section. There seemed to be a bug in the recent software update. This setting on my phone was already marked as Off, but I was getting the notifications anyway. To get the flash notifications to stop, I needed to turn the setting On and exit out of settings, then go back in and turn it Off again. This time the selection took.
There was another discussion in here that recommended turning the phone off and then back on in between making changes to the setting. For me, that step was not necessary. -
I've been using a new T500 for a few weeks and love it, but I'm having a problem. After I've been using it for a couple of hours I notice my hard disk light is flashing constantly and rapidly, like 10 times a second. I haven't been able to tie it to anything I've done. When it is in this state, some things start behaving erratically, e.g. a program might not come up when I try to start it up, or some progam menu functions won't produce any actions. If I try a shutdown, the system hangs after all the normal shutdown windows are done.
I've gone into Task Manager and there are a bunch of processes that are doing lots of I/O Reads, Writes, and Others. I start killing those processes till there's nothing showing disk activity, but the light is still flashing rapidly. There is no swap activity. CPU usage is minimal.
I'm running XP. I have the encrypted hard disk option with password and fingerprint protection. I use Password Manager with fingerprint access.
Any idea what could be going on? How can I diagnose this issue further?
Thanks.
KenMUpdate didn't apply properly. You will need to grab a micro usb cable and restore in iTunes
http://support.apple.com/kb/HT4367?viewlocale=en_US&locale=en_US -
Why won't my led flash after turning it on in accesibility?
Turned on LED Flash for Alerts under accessibility and it worked great for a few days and now it's stopped. What happened? What can I do to get it to blind again when i get calls or notifications?
Never mind. I saw this in the forums after I submitted my question:
"hey everyone. try this before you make trips to the store. turn off the light in your settings and reset your phone. (hold power and home until the apple logo comes up). then when the phone has started back up, turn the light on again and test it ! ( send yourself a text and turn off your screen. you should get the flash when you receive your msg!)
keep in mind though it doesnt flash until you have your screen off.
i think the light must glitch out if you change the flash settings in your camera- and the program requires a restart. hopefully apple fixes this bug (:"
Did this and it worked =)
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