Dear list,
I have inherited a CentOS-5 box with a LSI Sata Raid controller. It is configured as a RAID5 w/hot-standby. My concern is that I have no present means of determining the RAID status w/o downing the system and going into the bios to get status. If a disk has failed and brought the standby disk online, I would like to know about it, the day it happens by seeing it in syslog or getting an e-mail message.
The only solution I have found is on the LSI web-site. It is tool called "MegaMon for Linux". It most recent release was in 2005 and it requires that I use their driver. Just the package title gives me chills. It runs as a daemon and is almost constantly polling the h/w .
I would much prefer a simple command line tool that I can wrap a script around and run it under cron.
My questions are:
1. Does anyone know of a command line tool ?
2. Failing a positive response to #1, has anyone any experience with "MegaMon for Linux", good or otherwise ?
Thanks to all, Ray
The h/w is a dual Opteron dual-core system with lots of memory. The relevant dmesg lines and lspci output are shown below:
dmesg:
megaraid cmm: 2.20.2.7 (Release Date: Sun Jul 16 00:01:03 EST 2006) megaraid: 2.20.5.1 (Release Date: Thu Nov 16 15:32:35 EST 2006) megaraid: probe new device 0x1000:0x0409:0x1000:0x3008: bus 3:slot 14:func 0 GSI 17 sharing vector 0xA8 and IRQ 17 ACPI: PCI Interrupt 0000:03:0e.0[C] -> GSI 18 (level, low) -> IRQ 17 megaraid: fw version:[814B] bios version:[H431] scsi5 : LSI Logic MegaRAID driver scsi[5]: scanning scsi channel 0 [Phy 0] for non-raid devices scsi[5]: scanning scsi channel 1 [virtual] for logical drives Vendor: MegaRAID Model: LD 0 RAID5 1144G Rev: 814B Type: Direct-Access ANSI SCSI revision: 02 *SCSI device sdc: 2343745536 512-byte hdwr sectors (1199998 MB) *sdc: Write Protect is off *sdc: Mode Sense: 00 00 00 00 *sdc: asking for cache data failed *sdc: assuming drive cache: write through *SCSI device sdc: 2343745536 512-byte hdwr sectors (1199998 MB) *sdc: Write Protect is off *sdc: Mode Sense: 00 00 00 00 *sdc: asking for cache data failed *sdc: assuming drive cache: write through * sdc: sdc1 sdc2 sdc3 *sd 5:1:0:0: Attached scsi disk sdc
lspci -v
03:0e.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID (rev 0a) Subsystem: LSI Logic / Symbios Logic MegaRAID SATA 300-8X RAID Controller Flags: bus master, stepping, 66MHz, medium devsel, latency 64, IRQ 17 Memory at cfcf0000 (32-bit, prefetchable) [size=64K] Memory at fe500000 (32-bit, non-prefetchable) [size=1M] Expansion ROM at fe4e0000 [disabled] [size=128K] Capabilities: [c0] Power Management version 2 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/1 Enable- Capabilities: [e0] PCI-X non-bridge device