Re: Accessing individual disk's SMART diagnostics behing a physical RAID
On Wed, Mar 12, 2025 at 04:41:06PM +0100, Yassine Chaouche wrote:
I have 5 disks on my server,
2x1 terabyte disks + 3x450 Gb disks,
but smartctl and cciss_vol_status only show 3 disks.
My controller is sg0 as shown in the output of lssci
Two of the drives are dead, you're not going to see anything from them
and this is the output from cciss
root@messagerie-recup[10.10.10.22] ~ # cciss_vol_status -V /dev/sg0
Controller: Smart Array P420i
Board ID: 0x3354103c
Logical drives: 2
Running firmware: 3.22
ROM firmware: 3.22
/dev/sda: (Smart Array P420i) RAID 1(1+0) Volume 0 status: Using interim recovery mode.
Failed drives:
connector 1I box 2 bay 2 HP EG0450FBLSF 6XQ1HLAJ0000B239FN4Z HPD7
Total of 1 failed physical drives detected on this logical drive.
/dev/sdb: (Smart Array P420i) RAID 5 Volume 1 status: Using interim recovery mode.
Failed drives:
connector 2I box 2 bay 6 HP MM1000FBFVR 9XG25D7Z00009248ZTUB HPD5
Total of 1 failed physical drives detected on this logical drive.
Physical drives: 3
connector 1I box 2 bay 1 HP EG0450FBLSF 6XQ1HGMC0000B307B4YK HPD7 S.M.A.R.T. predictive failure.
connector 2I box 2 bay 5 HP MM1000FBFVR 9XG2CG0J00009250NWN4 HPD5 OK
connector 2I box 2 bay 7 HP MM1000FBFVR 9XG5RYDQ000094198GDT HPD8 OK
/dev/sg0(Smart Array P420i:0): Non-Volatile Cache status:
Cache configured: Yes
Total cache memory: 816 MiB
Cache Ratio: 10% Read / 90% Write
Read cache memory: 82 MiB
Write cache memory: 734 MiB
Write cache enabled: Yes
Flash backed cache present
root@messagerie-recup[10.10.10.22] ~ #
in particular, it says physical drives: 3
That's 3 working physical drives. This array is both strange and shot.
It looks like thre was a raid 1 with a single 1TB drive, then a raid 5
of 3 smaller drives and another 1TB drive. And another of the smaller
drives in the raid 5 is about to die.
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