Messages in this thread | | | From | "Sergey S. Kostyliov" <> | Subject | 2.6.1 IO lockup on SMP systems | Date | Sat, 31 Jan 2004 19:40:27 +0300 |
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Hello all,
I had experienced a lockups on three of my servers with 2.6.1. It doesn't look like a deadlock, the box is still pingable and all tcp ports which were in listen state before a lockup are remains in listen state, but I can't get any data from this ports. According to sar(1) systems had not been overloaded right before a lockup. And there is no log entries in all user services logs for almost 10 hours after lockup.
So I think this is an IO lockup. On the other side it doesn't look like a bug in particular controller driver, because they are different for each box. And finally it doesn't look like a bug in particular io-scheduler because two of boxes were runed with "deadline" and one with "as". Of course all assumptions are valid only if all lockups I had seen have the same nature.
All of three boxes are SMP. Unfortunately all are remote and aren't attached to a serial console yet (this is planed in next couple of weeks).
1) ope 01:02.1 RAID bus controller: Mylex Corporation: Unknown device 0050 (rev 02) elevator=deadline .config: http://sysadminday.org.ru/2.6.1-io_lockup/ope/.config lspci: http://sysadminday.org.ru/2.6.1-io_lockup/ope/lspci lspci -vvn: http://sysadminday.org.ru/2.6.1-io_lockup/ope/lspci_-vvn
2) white 02:04.0 RAID bus controller: American Megatrends Inc. MegaRAID (rev 02) elevator=deadline .config: http://sysadminday.org.ru/2.6.1-io_lockup/white/.config lspci: http://sysadminday.org.ru/2.6.1-io_lockup/white/lspci lspci -vvn: http://sysadminday.org.ru/2.6.1-io_lockup/white/lspci_-vvn
3) tiny 02:00.0 Unknown mass storage controller: Compaq Computer Corporation Smart-2/P RAID Controller (rev 03) 03:00.0 Unknown mass storage controller: Compaq Computer Corporation Smart-2/P RAID Controller (rev 03) elevator=as .config: http://sysadminday.org.ru/2.6.1-io_lockup/tiny/.config lspci: http://sysadminday.org.ru/2.6.1-io_lockup/tiny/lspci lspci -vvn: http://sysadminday.org.ru/2.6.1-io_lockup/tiny/lspci_-vvn
Any hints will be appreciated.
-- Best regards, Sergey S. Kostyliov <rathamahata@php4.ru> Public PGP key: http://sysadminday.org.ru/rathamahata.asc
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