How to test RAID10 array performance [Debian Wheezy]? Post: 302918751

8 More Discussions You Might Find Interesting

1. Debian

apt-get problems on Wheezy

I am having some troubles with apt-get. I did an apt-get update and an apt-get upgrade. Some dependencies did not download, and so I had to do `apt-get -f install` to fix that. The thing is I get an error about /var/lib/dpkg/available root@hayek:~# apt-get -f install Reading package lists......

2. Shell Programming and Scripting

How do I test the first char of each line in an array

Hi folks, I am self-learning as I can I have a script that has read a file into an array. I can read out each line in the array with the code: for INDEX in {0..$LENGTH} ## $LENGTH was determined at the read in do echo "${data}" done What I need to do is test the first char...

3. Shell Programming and Scripting

[solved] awk: test assoc. array for content

Hi all, I am looking for a quick/short way in awk to check if an associative array has any content. I know I can split() it to an indexed array and check if the 1st element is set, or cycle through it with something like for( ele in arr ), but I want to avoid that, as I am looking for a shorter...

4. Linux

Unload kernel module at boot time (Debian Wheezy 7.2, 3.2.0-4-686-pae kernel)

Hi everyone, I am trying to prevent the ehci_hcd kernel module to load at boot time. Here's what I've tried so far: 1) Add the following line to /etc/modprobe.d/blacklist.conf (as suggested here): 2) Blacklisted the module by adding the following string to 3) Tried to blacklist the module...

5. Shell Programming and Scripting

Bash - array loop performance

Hi, another little question... "sn" is an array whose elements can vary from about 55,000 to about 150,000 elements. Each element consists of an integer between 0-255, eg: ${sn} contain the value: 103 . For a decrypt-procedure I need scroll all the elements 4 or 5 times. Here is an example of...

6. HP-UX

Test cases for file system mount/umount performance in HP

Hi Folks, Could anyone please assist me with the what could be the scenarios to test the file system mount/umount performance check in HPUX. Thanks in advance, Vaishey

7. AIX

Power RAID10 array reconstruct fails ?

Hello, P7 machine PCI Express x8 Planar 3Gb SAS Adapter RAID10 array(2 disks)(not AIX lvm) was configured and working, then one disk failed and IBM support replaced that. Now raid array is degraded, data is not lost. I see new disk model(same as original) serial and etc. What I did trying...

8. Shell Programming and Scripting

If test array element multiplication

Ya, I know, who in this day and age is mirroring rootvg...? But yes, my shop does and I need to script checking for it. I also know I could just inverse the the logic and call the LV mirrored if the LPs and PPs were not equal. But I want to do the math in the if test and also know I could...

LEARN ABOUT OPENSOLARIS

mega_sas

mega_sas(7D)							      Devices							      mega_sas(7D)

NAME

       mega_sas - SCSI HBA driver for LSI MegaRAID SAS controller

DESCRIPTION

       The mega_sas MegaRAID controller host bus adapter driver  is a  SCSA-compliant  nexus  driver that supports the Dell PERC 5/E, 5/i, 6/E and
       6/i RAID controllers, the IBM ServeRAID-MR10k SAS/SATA  controller and  the  LSI  MegaRAID  SAS/SATA  8308ELP,  8344ELP,  84016E,  8408ELP,
       8480ELP, 8704ELP, 8704EM2, 8708ELP, 8708EM2, 8880EM2 and 8888ELP series of controllers.

       Supported  RAID	features  include RAID levels 0, 1, 5, and 6, RAID spans 10, 50 and 60, online capacity expansion (OCE), online RAID level
       migration (RLM), auto resume after loss of  system power during arrays, array rebuild or reconstruction (RLM) and configurable stripe  size
       up  to  1MB. Additional supported RAID features include check consistency for background data integrity, patrol read for media scanning and
       repairing, 64 logical drive support, up to 64TB LUN support, automatic rebuild and global and dedicated hot spare support.

CONFIGURATION

       The mega_sas.conf file contains no user configurable parameters. Please configure your hardware through the related  BIOS  utility  or  the
       MegaCli	configuration  utility.  If  you  want to install to a drive attached to a mega_sas HBA, you should create the virtual drive first
       from the BIOS before running the Solaris install. You can obtain the MegaCli utility from the LSI website.

       The mega_sas device can support up to  64 virtual disks. Note that BIOS numbers the virtual disks as 1 through 64, however in  the  Solaris
       operating  environment virtual disks are numbered from 0 to 63.	Also note that SAS and SATA drives cannot be configured into the same vir-
       tual disk.

KNOWN PROBLEMS AND LIMITATIONS

       The mega_sas driver does not support the LSI MegaRAID SAS 8204ELP, 8204XLP, 8208ELP, and 8208XLP controllers.

FILES

       /kernel/drv/mega_sas	     32-bit ELF kernel module. (x86)

       /kernel/drv/amd64/mega_sas    64-bit kernel   module. (x86)

       /kernel/drv/mega_sas.conf     Driver configuration file (contains no user-configurable options).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Architecture		     |x86-based systems 	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWmegasas		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Uncommitted		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       prtconf(1M), attributes(5), sata(7D), scsi_hba_attach_setup(9F), scsi_sync_pkt(9F), scsi_transport(9F), scsi_inquiry(9S),  scsi_device(9S),
       scsi_pkt(9S)

       Small Computer System Interface-2 (SCSI-2)

SunOS 5.11							    14 Aug 2008 						      mega_sas(7D)