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2answers
288 views

LUN device file names mixed

The following listings are from a Linux RHEL box. I'm a bit confused over the following inconsistencies. Here we have aliases defined for each LUN in multipath bindings file: mpath0 ...
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1answer
33 views

Multipath Drive Association

So i have an issue were the drive mappings for the servers will not line up even though the configs for them match exactly.. The main problem is the path for the drives keeps switching. foo# ...
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1answer
87 views

New lun doesnt work well

Actually we have a server with Oracle Linux 5.8 in which we present clones of production LUN and then we open a clone of the database for several querys. The problem begin when we execute this ...
0
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1answer
589 views

How to delete a file in a LUN that gives an error?

I have a 1.5GB LUN, on a QNAP NAS. The LUN is attached to a W2K3, and has some folders shared on it. On one sub-folder there is a specific file, that is corrupted. I need to delete it, but I can't ...
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0answers
231 views

NPIV Fibre Channel how to make vHBA scsi_hostX persistent after reboot and libvirt

I'm using QLogic 8GB Fibre Channel HBA which has NPIV with CentOS6.5 I created the LUN on the SAN and did the zoning for the virtual WWPN. In CentOS I do the following to create a virtual HBA: echo ...
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0answers
20 views

LUN doesn't mount after reboot

After changing the size of a LUN (grow) on a RHEL 6 System, the LUN/LV (which is part of a Volume Group) does not mount after a reboot anymore. I have to execute vgchange -a y And after that i can ...
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0answers
96 views

Optimum LUN size for LVM created NFS share

I have access to roughly 80 TB of capacity via a SAN, which I want to set up as as 2 NFS shares: 1 share of 70 TB and 1 share of 10 TB. The 10 TB share will have full backup to tape, whereas the 70 TB ...
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0answers
154 views

Does a dead LUN path cause an increase in I/O times on the remaining LUN path(s)?

We use an EMC SAN appliance. There are 2 'paths' from the cluster to the SAN. Today we experienced that one of the LUN paths was 'dead' (as reported in the windows event logs). Presumably the ...
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0answers
331 views

Presented LUN displaying 3 disks after fdisk -l

All, I appreciate in advance any useful responses to the following: One (1) 800GB LUN from external SAN was presented to 4 RHL servers (2.6.9-78.0.8 x86_64) Initial < fdisk -l > before reboot ...
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0answers
479 views

LUNs disappear after rebooting the ESX/ESXi host

A single LUN among from a group disappeared following the ESXI host restart. Neither the host nor the Vcenter can see it. I have four virtual machines on the LUN hiden now showing just unknown from ...
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0answers
116 views

Xenserver 6.5 (Open Source) VDI per ISCSI LUN (ZFS ZVOL)

In Xenserver 6.5 (open source edition) I want to create VMs with VDIs that are actually iSCSI LUNs shared by a CentOS 7 SAN which are in fact ZFS ZVOLS (the last part should not matter). My problem ...