Disk errors in Proxmox syslog

[jlmorgado]

Hi everyone!

Started getting the following errors in Proxmox syslog in one of our nodes. Managed to move all VMs out of the node, but trying to determine how to fi this

May 17 13:54:39 vm-host-4 kernel: blk_update_request: critical medium error, dev sdb, sector 0 op 0x0READ) flags 0x4000 phys_seg 9 prio class 0
May 17 13:54:44 vm-host-4 kernel: sd 11:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
May 17 13:54:44 vm-host-4 kernel: sd 11:0:0:0: [sdb] tag#0 Sense Key : Medium Error [current]
May 17 13:54:44 vm-host-4 kernel: sd 11:0:0:0: [sdb] tag#0 Add. Sense: Unrecovered read error
May 17 13:54:44 vm-host-4 kernel: sd 11:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 00 00 00 3f 00 00 f0 00

Can't understand what that sdb disk is, as I get this running fdisk -l (just showing the sdb part):

Disk /dev/sdb: 512 MiB, 536870912 bytes, 1048576 sectors
Disk model: LUN 00 Media 0
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000046

Device Boot Start End Sectors Size Id Type
/dev/sdb1 63 514079 514017 251M c W95 FAT32 (LBA)

This is a HPE Proliant Gen 9 server, does anyone have a clue on what might be wrong or how can I debug it further?

Thanks,
J.

 

[Stoiko Ivanov]

The error-messages look like a hardware problem with the disk.

Usually you get a better view about the disk by checking the various udev links in /dev/disk, lsblk and blkid might also give some hints:

 ls -lRa /dev/disk/by-* |grep sdb
lsblk
blkid

additionally during bootup the kernel prints some information about each device it finds - I'd also read through the output of `dmesg`

This is a HPE Proliant Gen 9 server, does anyone have a clue on what might be wrong or how can I debug it further?

depending on how the disks are connected in the server it might also be a RAID-volume - you could check the status in the iLO IIRC - or try hpssacli:
https://gist.github.com/mrpeardotnet/a9ce41da99936c0175600f484fa20d03
- please read up on the HP parts some more - it's been quite a while since I was working with HP servers - so my info might be a bit dated...

I hope this helps!