The HBA is an HP H220.
We haven’t really benchmarked individual drives – all 12 drives are utilized in one RAID-10 array, I’m unsure how we would test individual drives without breaking the array.
Trying ‘hdparm -tT /dev/sda’ now – it’s been running for 25 minutes so far…
Kelly
On 2016-05-25, 2:12 PM, "centos-bounces@centos.org on behalf of Dennis Jacobfeuerborn" <centos-bounces@centos.org on behalf of dennisml@conversis.de> wrote:
What is the HBA the drives are attached to? Have you done a quick benchmark on a single disk to check if this is a raid problem or further down the stack?
Regards, Dennis
On 25.05.2016 19:26, Kelly Lesperance wrote:
[merging]
The HBA the drives are attached to has no configuration that I’m aware of. We would have had to accidentally change 23 of them ☺
Thanks,
Kelly
On 2016-05-25, 1:25 PM, "Kelly Lesperance" klesperance@blackberry.com wrote:
They are:
[root@r1k1 ~] # hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media Model Number: MB4000GCWDC Serial Number: S1Z06RW9 Firmware Revision: HPGD Transport: Serial, SATA Rev 3.0
Thanks,
Kelly
On 2016-05-25, 1:23 PM, "centos-bounces@centos.org on behalf of m.roth@5-cent.us" <centos-bounces@centos.org on behalf of m.roth@5-cent.us> wrote:
Kelly Lesperance wrote:
I’ve posted this on the forums at https://www.centos.org/forums/viewtopic.php?f=47&t=57926&p=244614#p2...
- posting to the list in the hopes of getting more eyeballs on it.
We have a cluster of 23 HP DL380p Gen8 hosts running Kafka. Basic specs:
2x E5-2650 128 GB RAM 12 x 4 TB 7200 RPM SATA drives connected to an HP H220 HBA Dual port 10 GB NIC
The drives are configured as one large RAID-10 volume with mdadm, filesystem is XFS. The OS is not installed on the drive - we PXE boot a CentOS image we've built with minimal packages installed, and do the OS configuration via puppet. Originally, the hosts were running CentOS 6.5, with Kafka 0.8.1, without issue. We recently upgraded to CentOS 7.2 and Kafka 0.9, and that's when the trouble started.
<SNIP> One more stupid question: could the configuration of the card for how the drives are accessed been accidentally changed?
mark
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