similar to: smartctl question

Hello, I'm using HP homeserver where host system run CentOS 6.3 with KVM virtualization with SELinux enabled, guests too run the same OS (but without SELinux, but this does not matter). Host system installed on mirrors based on sda and sdb physical disks. sd{c..f} disks attached to KVM guest (whole disks, not partitions; needed to use zfs (zfsonlinux) benefit features). Problem is that disks

Hi All, I don't know enough about when errors are *really* errors. So I google a lot to read and learn. I have a few things in my Logwatch that I want to make sure I understand 1. smartd **Unmatched Entries** Problem creating device name scan list Device /dev/sda: using '-d sat' for ATA disk behind SAT layer. Device /dev/sdb: using '-d sat' for ATA disk behind SAT layer.

A few weeks ago, one of my servers started complaining, via smartd, that one drive had one unreadable sector. I umounted it, and ran an fsck -c, then remounted it. Error didn't go away. Now, what's really annoying is that I've gotten back to it today, and it's reporting the problem, as it has for weeks now, every half an hour. However, when I run > smartctl -q errorsonly -H -l

I'm looking to do a bit more monitoring of my 3ware 9550 with smartd, and wanted to see what others were doing with smart for monitoring 3ware hardware. Do you have the smartd.conf configured to test, or simply monitor health status? Are you monitoring the drive as centos sees it (/dev/sdX) or are you using the 3ware /dev/twaX for monitoring? Opinions and discussions are welcome :-P --

thanks for the reply, Phil It would, were udev not inserting USB and/or eSATA drives at /dev/sdb1 and/or /dev/sdc1 and exposing the array to the udev rule intended to handle only removable devices (at sdc or sdd). The array then mounts unpredictably in /media/xxx-sdc1 or sdd1 - not what is wanted - depend on how many removable devices are plugged at the time of rebooting. Of course, a single

I am running software RAID1 on a somewhat critical server. Today I noticed one drive is giving errors. Good thing I had RAID. I planned on upgrading this server in next month or so. Just wandering if there was an easy way to fix this to avoid rushing the upgrade? Having a single drive is slowing down reads as well, I think. Thanks. Feb 7 15:28:28 server smartd[2980]: Device: /dev/sdb

How can I tell wich HDD to swap, when the "cat /proc/mdstat" says one HDD of the RAID1 array has died? Does the HDD's has some serial numbers, that I can see in "reality", and I can get that number from e.g.: a commands output? How could I know wich HDD to swap in e.g.: a RAID1 array? thank you -------------- next part -------------- An HTML attachment

libguestfs recently added support for virtio-scsi and libvirt, and when these are both available this lets us relatively easily add hotplugging of drives. This email is about how we would present that through the libguestfs API. (a) The current API Currently you have to add drive(s) via guestfs_add_drive* and then call guestfs_launch, ie. your program must look something like this: guestfs_h

Hi CentOS 5.4(final) 2.6.18-164el5PAE. I am trying to prevent removable USB and eSATA devices from occupying /dev/sdX devices ahead of a 3ware RAID controller. For example: at boot, if a USB drive and eSATA HDD (connected to an LSI 1068E onboard controller, reflashed in "IT" mode to handle hotplug devices) were both present, they would occupy devices /dev/sdb and /dev/sdc, ahead of

On 4/22/20 8:53 AM, Christopher Wensink wrote: > I had an 8 TB External USB disk plugged into the system, that I had been > using for additional space for backups, I was under the impression that > sda, sdb, sdc, and sdd were the four disks on the raid controller card, Not exactly.? If you have a RAID5 array, then you have one volume spread across the physical disks.? You can then

We have about 50 CentOS servers with software RAID level 1 (mirroring). Each week, we swap out one of the drives (the one in the second of four hot-swap bays, only the first two of which contain drives) on each server and take them offsite for safekeeping. The problem is, the kernel seemingly randomly switches between /dev/sdb and /dev/sdc for these devices. This makes the process slower by

Trying to setup a volume group with puppet lvm and this:- volume_group { "my_vg": ensure => present, physical_volumes => "/dev/sdb /dev/sdc /dev/sdd", require => [ Physical_volume["/dev/sdb"], Physical_volume["/dev/sdc"], Physical_volume["/dev/sdd"] ] } Fails with this in the debug

Hi list, I'm building a NFS server on top of CentOS 8. It has 8 x 8 TB HDDs and 2 x 500GB SSDs. The spinning drives are in a RAID-6 array. They are 4K sector size. The SSDs are in RAID-1 array and with a 512bytes sector size. I want to use the SSDs as a cache using dm-cache. So here what I've done so far: /dev/sdb ==> SSD raid1 array /dev/sdd ==> spinning raid6 array I've

I?ve posted this on the forums at https://www.centos.org/forums/viewtopic.php?f=47&t=57926&p=244614#p244614 - 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

On my machine I have SATA0: HD SATA1: HD these two drives are set as RAID1 SATA2: HD extra SATA3: DVD SATA4: external USB disk Snip from dmesg shows the ATAPI device being detected. ata3: SATA max UDMA/133 cmd 0x9e0 ctl 0xbe0 bmdma 0xe400 irq 10 ata4: SATA max UDMA/133 cmd 0x960 ctl 0xb60 bmdma 0xe408 irq 10 ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata3.00: ATAPI: PIONEER BD-ROM

Hi, My storage admin just assigned a Lun (fibre) to my server. Then re scanned using echo "1" > /sys/class/fc_host/host5/issue_lip echo "1" > /sys/class/fc_host/host6/issue_lip I can see the scsi device using dmesg But mpath device are not created for this LUN Pleas see below. The last 4 should be active and I think this is the problem Kernel:

All of our Kafka clusters are fairly write-heavy. The cluster in question is our second-heaviest ? we haven?t yet upgraded the heaviest, due to the issues we?ve been experiencing in this one. Here is an iostat example from a host within the same cluster, but without the RAID check running: [root at r2k1 ~] # iostat -xdmc 1 10 Linux 3.10.0-327.13.1.el7.x86_64 (r2k1) 05/27/16 _x86_64_ (32 CPU)

I have a (CentOS4.5) cluster in which the servers mount a GFS partition which is an LVM2 logical volume created as a mirror of two iSCSI- connected drives (with a third for the log). The LV was created using a command along the lines of: lvcreate -m 1 ... /dev/sdb /dev/sdc /dev/sdd where sd[bc] are the mirrored (iSCSI) PVs in the VG and sdd is the log. I have this working and can write data

Hello, I have IBM Storwize V3700 storage, connected to 2 IBM x3550 M4 servers via fiber channel. The servers are with QLogic ISP2532-based 8Gb Fibre Channel to PCI Express HBA cards and run Centos 5.10 When I export a volume to the servers, each of them sees the volume twice, i.e /dev/sdb and /dev/sdc, with the same size. Previously I have installed many systems with IBM DS3500 series of

This morning between 07:10 or so and 08:10 I discovered that my PC had shut itself off. I thought it was due to a power failure becuase I never turn it off without a good reason, and it had been running (and playing sounds) until it wasn't. My roommate/landlord tells me that the only anomaly he observed was that our router had lost its internet connection (via a cable modem, which was still