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MegaRAID - changing cache policy online
I would like to perform some tests with WriteThrough and WriteBack - is it safe to change these settings on a production system?
The RAID controller doesn't have BBU so I would like to enable ...
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MegaCli refuses to configure new disk
A drive went bad on one of my nodes (actually 3 went bad, but there was no problem replacing the first one).
following replacement of the drive,
[root@ MegaCli]# ./MegaCli64 -PDList -aALL | egrep ...
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1answer
192 views
MegaCLI causes drive “Other Error”
I am having an issue where running "megalci -PDList -aAll" will cause an Other Error to be logged for 2 of the 6 discs in a pair of servers I have. Here is that again in more detail.
I have two ...
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megacli forceWB
We are using a raid controller:
LSI Logic / Symbios Logic MegaRAID SAS 2008
But there is no BBU on Board, is there a way to force the WB Cache ??
I tried following:
-> ...
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1answer
304 views
Bad Blocks Exist in Virtual Device PERC H700 Integrated
I have a DELL server with PERC H700 Integrated controller. I've made RAID5 with 12 harddrives and the virtual device is in Optimal state, but I receive such errors under linux:
sd 0:2:0:0: [sda] ...
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1answer
150 views
Added drive to PERC6/i raid5 array instead of replacing - is there a way to fix this?
This is a 3 drive RAID5. The disk in slot 1 failed. After the disk was replaced, I ran:
MegaCli64 -LDRecon -Start -r5 -Add -PhysDrv[32:1] -L0 -a0
Obviously that was not the correct command as now ...
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1answer
122 views
MegaCli newly created disk doesn't appear under /dev/sdX
After having successfully added 2 new disks in a new RAID virtual drive (background initialization done), I would have exepected it to appear under /dev/sdh but it's not there (so, unusable).
The ...
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97 views
megacli64.exe manual
Is there any document that explains the command line switches of megacli better than the cryptic output of megacli64 -h ?
The machine is an IBM x3650 m3 to which I added three more disks.
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242 views
How to I know hard disk members of any Virtual Disk LSI RAID with MEgaRaid
i get a machine with a LSI MEgarad card.
I know what Virtual Diska has:
Adapter: 0
Product Name: LSI MegaRAID SAS 9260-4i
Memory: 512MB
BBU: Absent
Serial No: SV11807006
...
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2answers
2k views
How to interpret this output from MegaCli?
/opt/MegaCli -CfgDsply -a0 | less
RAID Level : Primary-1, Secondary-3, RAID Level Qualifier-0
Almost positive this is not running a RAID3, my guess is a RAID 10, where "Primary" means ...
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1answer
431 views
Reset MegaCLI error count
I have a system where MegaCli64 -PdList -a0 shows media errors on one disk. After investigating the errors, I've decided not to take any action for now. I'd like to reset the error count, so that ...
