[CentOS] SCSI drives and Centos 7

[Gregory P. Ennis]

On 04/29/2017 06:50 AM, Gregory P. Ennis wrote:
> about 4 years ago, I tried to install CentOS 6 on a Supermicro server
> with SCSI drives using a LSI raid system.

Red Hat does discontinue support for some storage driver for very old 
hardware when they start a new release series.  For EL6, that list is here:

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Migration_Planning_Guide/sect-Migration_Guide-Package_Changes-Driver_Changes.html#sect-packages-discontinued-drivers
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Migration_Planning_Guide/sect-packages-deprecated-drivers.html

For 7:

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Migration_Planning_Guide/sect-Red_Hat_Enterprise_Linux-Migration_Planning_Guide-Removed_Drivers.html

I did a cursory check, and don't see any drivers that were removed in 6 
present in 7.

Run 'lsmod' on the system you're currently running and see if you can 
locate the storage driver.  I'm guessing it's "megaraid" which is not 
present in EL7.

Gordon,

Thank you for your help

You were right :

dm_message             36289  1 dm_raid45
dm_region_hash         46145  1 dm_raid45
dm_log                 44993  3 dm_mirror,dm_raid45,dm_region_hash
dm_mod                103313  4 dm_mirror,dm_multipath,dm_raid45,dm_log
dm_mem_cache           38977  1 dm_raid45
ahci                   74317  0
ata_piix               57285  0
libata                210769  2 ahci,ata_piix
aic79xx               202521  0
scsi_transport_spi     59841  1 aic79xx
shpchp                 70637  0
megaraid_mbox          66001  5
sd_mod                 56513  7
scsi_mod              202201  14 be2iscsi,ib_iser,iscsi_tcp,bnx2i,libcxgbi,libiscsi2,scsi_transport_iscsi2,scsi_dh,sg,libata,aic79xx,scsi_transport_spi,megaraid_mbox,sd_mod
megaraid_mm            44793  1 megaraid_mbox

Looks like it is time for an upgrade

Greg