From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Wilck Date: Wed, 27 Jun 2001 17:12:48 +0000 Subject: [Linux-ia64] Mylex RAID stability on IA-64 Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Has anybody made stress tests on a Mylex RAID controller with Linux/IA64 yet? We have seen the following phenomena: 1) Syslog messages like Jun 27 19:02:03 tl02 kernel: DAC960#0: Error Condition VENDOR-SPECIFIC on WRITE: Jun 27 19:02:03 tl02 kernel: DAC960#0: /dev/dac960/host0/disc1: absolute blocks 23366555..23366562 Jun 27 19:02:03 tl02 kernel: DAC960#0: /dev/dac960/host0/disc1: relative blocks 2..2883680 The error conditions is always "VENDOR-SPECIFIC on WRITE", which doesn't tell me very much. 2) Random lockups of the IO-intensive commands (cp, tar, find, ...) This happens rarely, but it does happen. The commands seem to lock up in wait4() system calls while other commands are still happily doing I/O. 3) Machine lockups. This has happened twice, but not yet with the 2.4.5 kernel. Even in the other cases we cannot be 100% sure that the Mylex I/O "killed" the machines. The only clue we have is that a message like the one above was the last record in the syslog before dying. "I/O stress" means about 4 IO-intensive processes at the same time. What have other people experienced with these boards on IA-64? Regards, Martin -- Martin Wilck FSC EP PS DS1, Paderborn Tel. +49 5251 8 15113