Sponsored Content
Full Discussion: SAN/LVM question
Operating Systems Linux Red Hat SAN/LVM question Post 302534813 by mark54g on Tuesday 28th of June 2011 10:27:46 PM
Old 06-28-2011
My experience with MSA storage (which the P2000 is the next generation of) has not been stellar. I have had a tremendous amount of failures. Also, isn't the P2000 an arbitrated loop system? If you plan on chaining them together, that may mean downtime.

It's too bad you can't do something like use an IBM SVC in front of your storage, as it would make a lot of your issues go away.

I agree wholeheartedly with cjcox. Large file systems on low budgets are asking for problems. I would create a VG for each array and then create LVs for each "client" logging server.

Also, I would suggest at LEAST 1 hot spare in your groups, as losing a 2TB drive will degrade performance, since they are 7200rpm to begin with, but the time to rebuild RAID 5 should be considered. You are talking many hours. If you have a second failure during that time, data is gone.

Also, your 2TB drives are really 1.85TB, and each array you create is about 9TB in size. Carve up your LUNs and treat them as PVs, using a rather large extent size.

Do you have to keep the logs around full time? My suggestion would be to have your server keep the latest data in an uncompressed format and then archive it to compressed formats later on, or at least move them into other drives to keep your file systems smaller.
 

10 More Discussions You Might Find Interesting

1. Filesystems, Disks and Memory

Multiple Paths to SAN with LVM in Linux?

I'm setting up a CentOS 5 server that will be connected to an HP EVA4000. My previous experience is with an HP VA7400 and HP-UX. In HP-UX I can add "alternate paths" to a volume group in order to have redundant paths to the SAN via dual fiber channel HBAs just by either adding them with... (3 Replies)
Discussion started by: deckard
3 Replies

2. AIX

Question about IBM San Ds4500

I have a question about SAN commands I have almost 15Tb of disk on my san but assigned and something else I have almost 11Tb There is a command to know, what its my real total storage capacity and another command to know how much I used .? Thanks again in advance (0 Replies)
Discussion started by: lo-lp-kl
0 Replies

3. Linux

LVM snapshot question

Hi All, I am planning to do a LVM replicate to another server. Example : server1.foo.com has / , /boot , swap and few LVM partitions. All are in /dev/sda disk of size 80GB. /dev/sda5 is a LVM partition which has only one vg00 and it has 2 LV's (/var and /usr) and a SAN storage connected to... (0 Replies)
Discussion started by: rakrhn
0 Replies

4. Filesystems, Disks and Memory

LVM snapshot question

Hi All, I am planning to do a LVM replicate to another server. Example : server1.foo.com has / , /boot , swap and few LVM partitions. All are in /dev/sda disk of size 80GB. /dev/sda5 is a LVM partition which has only one vg00 and it has 2 LV's (/var and /usr) and a SAN storage connected to... (0 Replies)
Discussion started by: rakrhn
0 Replies

5. Red Hat

LVM question

Hi all; I have a quick question about LVM. 2.6.18-92.1.18.el5 Distributor ID: RedHatEnterpriseServer Description: Red Hat Enterprise Linux Server release 5.3 (Tikanga) Release: 5.3 Codename: Tikanga I was going through /etc/lvm.conf and I am not clear with lvm meta... (0 Replies)
Discussion started by: maverick_here
0 Replies

6. UNIX for Dummies Questions & Answers

Linux LVM Question

I've three partitions on /dev/sda: sda1, sda2 sda3. There is FREE space between sda2 and sda3 and sda3 ends on the last sector. sda2 and sda3 have the same number of sectors allocated and so are the exact same size. /dev/sda2 is already part of the VG VolGroup. However, what puzzles me is that... (0 Replies)
Discussion started by: Devyn
0 Replies

7. AIX

HACMP two-node cluster with two SAN storages mirrored using LVM

HACMP two-node cluster with mirrored LVM. HACMP two-node cluster with two SAN storages mirrored using LVM. Configured 2 disk heartbeat networks - 1 per each SAN storage. While performing redundancy tests. Once one of SAN storage is down - cluster is going to ERROR state. What are the guidelines... (2 Replies)
Discussion started by: OdilPVC
2 Replies

8. UNIX for Dummies Questions & Answers

Question about lvm file creation

Hi, I have below code for disk creation disk_list=$(ls /dev/sd) for disk in $disk_list do pvcreate $i done So what my understanding is first it is checking the disk under /dev sdb,sdc,sdd,...sdz whether 25 disk are existing if not then its creating the 25 physical volume. I... (4 Replies)
Discussion started by: stew
4 Replies

9. HP-UX

SAN Migration question

Hi, I am very new to HP-UX, and we're going to be doing a SAN migration. We're going to take down the machine, and zone it to the new SAN. My question is, will the device names change and will that interfere with the LVM? If the new disks come in with different device names, how would I... (3 Replies)
Discussion started by: BG_JrAdmin
3 Replies

10. Filesystems, Disks and Memory

Some question about SAN on HP 4400 EVA

Good morning. For testing purpose i have buy a SAN DISK SHELF i need now a controller(hsv300) and a switch SAN Is my first SAN so i'm a little confused about cables. For testing we use an old rx2600 hp server the adapter is HP A6795AX A6795-62001 Some fast questions: i need an fc/fc cable... (7 Replies)
Discussion started by: Linusolaradm1
7 Replies
fp(7d)								      Devices								    fp(7d)

NAME
fp - Sun Fibre Channel port driver DESCRIPTION
The fp driver is a Sun fibre channel nexus driver that enables fibre channel topology discovery, device discovery, fibre channel adapter port management and other capabilities through well-defined fibre channel adapter driver interfaces. The fp driver requires the presence of a fabric name server in fabric and public loop topologies to discover fibre channel devices. In pri- vate loop topologies, the driver discovers devices by performing PLOGI to all valid AL_PAs, provided that devices do not participate in LIRP and LILP stages of loop initialization. CONFIGURATION
The fp driver is configured by defining properties in the fp.conf file. The fp driver supports the following properties: mpxio-disable Solaris I/O multipathing is enabled or disabled on fibre channel devices with the mpxio-disable property. Specifying mpxio-disable="no" activates I/O multipathing, while mpxio-disable="yes" disables the feature. Solaris I/O multipathing may be enabled or disabled on a per port basis. Per port settings override the global setting for the specified ports. The following example shows how to disable multipathing on port 0 whose parent is /pci@8,600000/SUNW,qlc@4: name="fp" parent="/pci@8,600000/SUNW,qlc@4" port=0 mpxio-disable="yes"; manual_configuration_only Automatic configuration of SCSI devices in the fabric is enabled by default and thus allows all devices discovered in the SAN zone to be enumerated in the kernel's device tree automatically. The manual_configuration_only property may be configured to disable the default behavior and force the manual configuration of the devices in the SAN. Specifying manual_configuration_only=1 disables the automatic con- figuration of devices. FILES
/kernel/drv/fp 32-bit ELF kernel driver (x86) /kernel/drv/amd64/fp 64-bit ELF kernel driver (x86) /kernel/drv/sparcv9/fp 64-bit ELF kernel driver (SPARC) /kernel/drv/fp.conf fp driver configuration file. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |mpxio-disable |Unstable | +-----------------------------+-----------------------------+ |manual_configuration_only |Obsolete | +-----------------------------+-----------------------------+ |Availability |SUNWfctl | +-----------------------------+-----------------------------+ SEE ALSO
cfgadm_fp(1M), prtconf(1M), stmsboot(1M), driver.conf(4), attributes(5), fcp(7D), fctl(7D), scsi_vhci(7D) Writing Device Drivers Fibre Channel Physical and Signaling Interface (FC-PH) ANSI X3.230: 1994 Fibre Channel Generic Services (FC-GS-2) Project 1134-D Fibre Channel Arbitrated Loop (FC-AL) ANSI X3.272-1996 Fibre Channel Protocol for SCSI (FCP) ANSI X3.269-1996 SCSI-3 Architecture Model (SAM) Fibre Channel Private Loop SCSI Direct Attach (FC-PLDA) ANSI X3.270-1996 SCSI Direct Attach (FC-PLDA) ANSI X3.270-1996 SCSI Direct Attach (FC-PLDA) NCITS TR-19:1998 Fabric Loop Attachment (FC-FLA), NCITS TR-20:1998 SunOS 5.10 2 Dec 2004 fp(7d)
All times are GMT -4. The time now is 01:51 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy