Beware of data loss! It is available in the packages repository too. Powered by Trac 1. The first one with a RAID1 array working fine. Even Ubuntu is listed in the wikipage, LSI card upgrade is not supported.
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The first one is already setup but we have just plugged a rdehat bays on the second card. The first one with a RAID1 array working fine.
Now we’re going to enable write cache. Assuming your new unassigned drive is identified as! It’s quite new and thus, may be missing in some not-up-to-date distributions. Hosting sponsored by http: You can write your own script around megacli to check your adapter status health periodically. Download in other formats: It means it has detected some RAID informations on it, and megaaid, considers it as a disk being part of an array that may be imported into current controller configuration.
LSIMegaRAIDSAS – HWraid
Proprietary tools creates the device node at startup. The packages comes with a python wrapper around megacli and an initscript that periodic run this wrapper to check status. These settings do not affect the read-ahead policy.
It seems ADRA is deprecated, current megacli binary doesn’t offer this option anymore. We’re going to enable an enhanced version of readahead: Linux kernel drivers 3. Let’s check if we have one and if it’s working fine:.
Here is what to do:. We can see that Physical Disk: It seems to work on old card but fails with the new one.
LSI MegaRAID SAS
The first thing you’ll have to do is to list IDs of all your physical disks:. If megasasctl doesn’t work for you, you will have to use the proprietary cli utility from LSI: You can write your own script around megasasctl to check your adapter status health periodically.
Use regular readahead instead: However, please that most of old distributions won’t have this driver.
The packages comes with a python wrapper around megasasctl and an initscript that periodic run this wrapper to check status. The cache policies are as follows:. Even Ubuntu is listed in the wikipage, LSI card upgrade is not supported. However LSI provide megaclia proprietary management command line utility which is rather hard to use.
With this option, readahead will only be enabled if the controller receive several access to sequencial sectors. It will log a ligne to syslog when something failed and megarqid send you a mail.
There is currently no known opensource megaraif for theses cards. Dell cards can be flashed using firmware-tools. The disk drive identified as! A complete documentation is attached as PDF here: Management and reporting tools 3. A server with two controllers old script version output, sorry got no such hardware to get a newer example: Mevaraid read policies indicate whether or not the controller should read sequential sectors of the logical drive when seeking data.