Linux Bus Error Reboot
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Linux Bus Error Message
posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault linux bus error core dumped is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody bus error in linux terminal can ask a question Anybody can answer The best answers are voted up and rise to the top Server responds “bus error” to every command up vote 4 down vote favorite I have a linux machine dedicated to MySQL server with
Rpm Bus Error
a pretty high load. Today I woke up and was terrified to see that database server is down. I could connect to it via SSH, but it was responding with bus error to each and every command: [root@r1304 home]# ls Bus error [root@r1304 home]# tail /var/log/messages Bus error [root@r1304 home]# reboot Bus error [root@r1304 home]# free -m Bus error [root@r1304 home]# chkdisk Bus error I went to Data Center and did a hard reset, which seemed to help, but after a half
Ubuntu Bus Error
an hour situation reapeated and now I can't even connet via SSH anymore. Any ideas what this could be? how to diagnose such a problem and what are possible fixes? Server has 32 GB RAM, 2xSSD drives with software RAID UPDATE According to Zabbix, when MySQL died, number of processes stated to increase drammaticaly, until I did a hard reset. What could those be? Number of processes linux centos hardware ssd bus share|improve this question edited Jul 24 '14 at 20:09 msanford 1,2251224 asked Dec 8 '12 at 13:30 Temnovit 31241224 Those are processes piling up waiting for I/O. Something is happening at the storage layer. –ewwhite Dec 8 '12 at 23:47 What was the issue? –ewwhite Dec 10 '12 at 10:32 @ewwhite, well, the hard drive completely died. Hello, kingston SSD. I'm bying a new one and restoring from a backup. –Temnovit Dec 10 '12 at 19:41 add a comment| 1 Answer 1 active oldest votes up vote 6 down vote accepted Your storage system seems to have failed. You can't read from disk at this point. Can you see the messages in the kernel ring buffer? Look at the output of dmesg if the command even works at this point. Do you have any backups or replication enabled? share|improve this answer answered Dec 8 '12 at 13:44 ewwhite 151k47300577 Thank you for your answer. Yes, I have cold backups and replication on another server
Forums Hosting Security and Technology What is mean "Bus error" in linux If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before bus error linux command you can post: click the register link above to proceed. To start viewing messages, select
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the forum that you want to visit from the selection below. Results 1 to 6 of 6 Thread: What is mean "Bus rpmdb open failed error" in linux Tweet Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 05-03-2008,11:57 PM #1 0218 View Profile View Forum http://serverfault.com/questions/456337/server-responds-bus-error-to-every-command Posts View Forum Threads Aspiring Evangelist Join Date Dec 2003 Posts 377 What is mean "Bus error" in linux Dear All, I am newbie in Linux. Today I up 1 linux server and colo in DC. When I remote access by SSH and ype some command, the sshm will show "Bus Error". May I know what is mean "Bus errro"? Reply With Quote 0 05-04-2008,04:48 AM #2 tix3 View Profile View Forum http://www.webhostingtalk.com/showthread.php?t=690707 Posts View Forum Threads Aspiring Evangelist Join Date Aug 2007 Location Greece Posts 390 Usually it meand you are out of ram.You should tail /var/log/messages to see any details. NOT a webhost!helping here just for the fun of it! G(r)eek inside. Reply With Quote 0 05-04-2008,06:01 AM #3 0218 View Profile View Forum Posts View Forum Threads Aspiring Evangelist Join Date Dec 2003 Posts 377 It is a new sevrer. I just setup in DC. Somebody is say possibility is hard disk problem. Can try to full filesystem check. But I am not in DC, may I know how can I do full filesystem check? Reply With Quote 0 05-04-2008,06:03 AM #4 0218 View Profile View Forum Posts View Forum Threads Aspiring Evangelist Join Date Dec 2003 Posts 377 I try tail /var/log/messages: Result May 2 11:48:56 server-01 kernel: hda: status error: status=0x80 { Busy } May 2 11:48:56 server-01 kernel: ide: failed opcode was: unknown May 2 11:48:56 server-01 kernel: hda: no DRQ after issuing MULTWRITE_EXT May 2 11:48:59 server-01 kernel: ide0: reset: success May 2 15:35:11 server-01 kernel: hda: status timeout: status=0x80 { Busy } May 2 15:35:11 server-01 kernel: ide: failed opcode was: unknown May 2 15:35:11 server-01 kernel: hda: drive not ready for command May 2 15:35:13 server-01 kernel: ide0: reset: success
2009 By Major Hayden 29 Comments Most linux distributions use some type of mechanism to gracefully stop daemons and unmount storage volumes during a reboot or shutdown. It's most commonly done via scripts that will wait for each daemon to shut down gracefully https://major.io/2009/01/29/linux-emergency-reboot-or-shutdown-with-magic-commands/ before proceeding to the next daemon. As we know, sometimes servers misbehave due to things put http://linux.ittoolbox.com/groups/technical-functional/linuxadmin-l/unable-to-run-some-commands-bus-error-3641099 them through, and you can quickly end up in a situation where things are going badly. I'm talking about the type of situation where you're connected via SSH to a server that controls phone lines for five million people and it sits in a tiny building 400 miles away from the nearest human being. We're talking bad. If you issue a plain reboot bus error command, it might not even make it that far. Once SSH stops running, you're going to be out of luck. If you find yourself in this situation (and I hope you won't!), you have some options to get your way with a misbehaving server remotely. You can force an immediate reboot with the following: XHTML echo 1 > /proc/sys/kernel/sysrq echo b > /proc/sysrq-trigger 12 echo 1 > /proc/sys/kernel/sysrq echo b > /proc/sysrq-trigger WHOA THERE! This is pretty much the same as linux bus error pressing the reset button on the server (if equipped). No daemons will be shut down gracefully, no filesystem sync will occur, and you may get the wrath of a fsck (or worse, a non-booting server) upon reboot. To do things a little more carefully, read on. These are called magic commands, and they're pretty much synonymous with holding down Alt-SysRq and another key on older keyboards. Dropping 1 into /proc/sys/kernel/sysrq tells the kernel that you want to enable SysRq access (it's usually disabled). The second command is equivalent to pressing Alt-SysRq-b on a QWERTY keyboard. There's a better way of rebooting a misbehaving server that Wikipedia shows with the mnemonic "Reboot Even If System Utterly Broken": XHTML unRaw (take control of keyboard back from X), tErminate (send SIGTERM to all processes), kIll (send SIGKILL to all processes), Sync (flush data to disk), Unmount (remount all filesystems read-only), reBoot. 123456 unRaw(take control of keyboard back from X), tErminate (send SIGTERM to all processes), kIll(send SIGKILL to all processes), Sync (flush data to disk),Unmount(remount all filesystems read-only),reBoot. I can't vouch for this actually working, but I'm interested to try it. UPDATE: I've been told that doing this series of commands with ReiserFS is a very bad idea. If you want to shut the machine down entirely (please think about it before using this on a remote system): XHTML echo 1 > /proc/sys/kernel/sysrq echo o > /proc/sysrq-trigger 12 ech
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