similar to: How do I know if I am using SAN?

Hi all. We developped a pv-scsi driver that we refered Fujita-san''s scsi-driver and blkback. (see, http://www.xensource.com/files/xensummit_4/Xen_Summit_8_Matsumoto.pdf) The pv-scsi driver''s feature is as follow: * Guest has dedicated SCSI-HBAs of Dom0. * Guest can send scsi_cdb to the HBAs. * Guest recognises the HBAs from hostno of xenstore. Currentlly, We are

Hello everyone, I am currently running Dovecot as a high performance solution to a particular kind of problem. My userbase is small, but it murders email servers. The volume is moderate, but message retention requirements are stringent, to put it nicely. Many users receive a high volume of email traffic, but want to keep every message, and *search* them. This produces mail accounts up to

Maybe one of you has experienced something like this before. I have a host running CentOS5.3, x86_64 version with the standard qla2xxx driver. Both ports are recognized and show output in dmesg but they never find my storage device: qla2xxx 0000:07:00.1: LIP reset occured (f700). qla2xxx 0000:07:00.1: LIP occured (f700). qla2xxx 0000:07:00.1: LIP reset occured (f7f7). qla2xxx 0000:07:00.0: LOOP

I have run into a problem using 'rsync' to copy files from local disk to a SAN mounted LUN / file-system. The 'rsync' seems to run fine and it reports no errors, but some files are corrupted (check-sums don't match originals, and file data is changed). So far, I have found this problem on both Solaris 9 and Solaris 10 OSes and on several different models of Sparc systems

Hello: I have a server with 2 HBAs, and the users keeps complaining about performance problems. My question is, how can I relate the process with high I/O wait? Also, is it possible to see how much data is being pushed thru by my 2 HBAs? TIA! -------------- next part -------------- An HTML attachment was scrubbed... URL:

# cat /etc/redhat-release CentOS Linux release 7.1.1503 (Core) # uname -r 3.10.0-123.20.1.el7.x86_64 Hi, We use iSCSI over a 10G Ethernet Adapter and SRP over an Infiniband adapter to provide multipathing to our storage: # lspci | grep 10-Gigabit 81:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01) 81:00.1 Ethernet controller: Intel Corporation

In waiting, I tried CentOS 8 which was an even bigger bust. I wiped that clean and tried again with Fedora 31. Same darn error "Could not create Target in configFS". Anyone?? Thank you, Steffan Cline steffan at hldns.com 602-793-0014 ?On 1/2/20, 2:00 AM, "CentOS on behalf of Steffan Cline via CentOS" <centos-bounces at centos.org on behalf of centos at centos.org>

Hello, I've recently been given domain over a number of supermicro storage servers using Broadcom / LSI SAS2004 PCI-Express Fusion-MPT SAS-2 [Spitfire] (rev 03) to run a bunch of SSDs. I was attempting to do fresh installs of CentOS 8 and have come to find out that RedHat deprecated support for a number of HBAs for 8 including all running the SAS2004 chip. Does anyone know if there is a

For quite some time I?ve been using FreeNAS to provide services as a NAS over ethernet and SAN over Fibre Channel to CentOS 7 servers each using their own export, not sharing the same one. It?s time for me to replace my hardware and I have a new R720XD that I?d like to use in the same capacity but configure CentOS 7 as a Fibre Channel target rather than use FreeNAS any further. I?m doing

> On Nov 11, 2020, at 5:38 PM, Warren Young <warren at etr-usa.com> wrote: > > On Nov 11, 2020, at 2:01 PM, hw <hw at gc-24.de> wrote: >> >> I have yet to see software RAID that doesn't kill the performance. > > When was the last time you tried it? > > Why would you expect that a modern 8-core Intel CPU would impede I/O in any measureable way as

Hi, i''m having problems attaching disks from a fc-san to a solaris 10 guest. xen host ist a opensolaris box "SunOS node1 5.11 snv_127 i86pc i386 i86xpv". my xen guest is named pg4. this command works fine. virsh attach-disk pg4 /dev/dsk/c8t600A0B800029D69A000013CA4B00E1ABd0 hdb and before i was able to import this volume as a zpool on the xen host - so connection to this

Hello everyone, Current host build is RHEL 6.2, soon to be upgrading. I'm in the process of mapping out a KVM/RHEV topology. I have questions about the landscape of storage pools and the instantiation of specific scsi_host IDs using virsh nodedev-create and some magic XML definitions. I'm grouping these questions together because the answer to one may impact the other. High-level

Anything special needed to boot from a SAN in CentOS 5.1 x86-64 ? We have a new system running a QLA2342 FC HBA connected to a SAN, have a volume exported to it and would like to boot from it. We PXEboot kickstart and that works, the installer sees the disk, installs to it, and reboots. When GRUB tries to load all it prints is "GRUB" and sits there. When we try the Xen edition of

I've got my RAC cluster running pretty smoothly now (thanks again for all the help so far), but I only have single connections between the servers and the RAID array. The servers each have two Qlogic HBAs, and I'd like to find out if there's any reasonable way to implement multipathing. The platform is RHEL 3, and Red Hat's knowledgebase indicates that they strongly recommend

Hi all, I'm troubleshooting an ocfs2 performance problem where creating files in a directory containing ~180k files is taking significant time to complete. Sometimes creating an empty file will take >100 seconds to complete. This is a three node cluster. I'm currently running OCFS2 1.2.3-1. Are there any changes in a recent version that may address this issue? What should I look

What initiators does libvirt support for the iSCSI pool? Will it work with qlogic's iSCSI HBAs for instance? --- Alexander Pierce, RHCE Solutions Architect -- Red Hat, Inc. apierce at redhat.com -- +1 (530) MR-LINUX (675-4689) Learn. Network. Experience Open Source. The 2010 Red Hat Summit and JBoss World Boston. June 22 - 25, 2010 http://www.theredhatsummit.com http://www.jbossworld.com

I apologize in advance as this is not really at CentOS specific issue, but I don't know where else to turn. We are configuring some Dell 1850s for a customer, and they have all been configured with a QLogic dual channel HBA. But no storage has been (or will be in the near future) attached to these HBAs. During the boot process (both for the kickstart and after the OS has been

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Due to a hardware maintenance (moving some gluster volumes to Infiniband, so adding/configuring the IB HBAs), we'll have to shutdown some nodes in the CentOS Infra. Migration is scheduled for Friday November 19th, 9:30 am UTC time. You can convert to local time with $(date -d '2014-11-19 09:30 UTC') The expected "downtime" is

I''m wondering if FLR really must be supported by the PCI card for PCI/VGA passthrough to work or if it will work anyway. I have read in the VTdHowTo that trying to pass through hardware without the FLR feature will result in an error. At the same time I read on a pdf document on the VMWare website (http://www.vmware.com/files/pdf/techpaper/vsp_4_vmdirectpath_host.pdf) that:

On 20/09/2020 04:16, Akemi Yagi wrote: > On Sat, Sep 19, 2020 at 8:04 PM William Markuske <wmarkuske at gmail.com> wrote: >> >> Hello, >> >> I've recently been given domain over a number of supermicro storage >> servers using Broadcom / LSI SAS2004 PCI-Express Fusion-MPT SAS-2 >> [Spitfire] (rev 03) to run a bunch of SSDs. I was attempting to do