similar to: Moving from RAID 0 to LVM RAID?

Mark Haney wrote: > On Fri, Aug 11, 2017 at 1:00 PM, Chris Murphy <lists at colorremedies.com> > wrote: > >> Changing the subject since this is rather Btrfs specific now. >> >> >> >>>> >>>> Sounds like a hardware problem. Btrfs is explicitly optimized for SSD, >> the >>>> maintainers worked for FusionIO for several

I have a client with a handful of USB drives connected to a CentOS box. I am charged with binding the USB drives together into a single LVM for a cheap storage data pool (10 x 1 TB usb drives = 10 TB cheap storage in a single mount point). The next fun piece is how to incorporate that storage space into an existing Active Directory structure to apply AD acls for limited access. I'd rather

smartctl, hdparm, and sdparm all are valuable tools to obtain hard drive info. But, they don't seem to work, at least, on obtaining hard drive info from drives on a Dell PERC controller. Instead, I'm given basic PERC controller info, not drive info. Is there a tool to let me get the hard drive make/model/serial numbers from a hardware RAID setup? Thanks. Scott

CentOS Community, What commands can I use to check the disk health of the system when LVM2 is being used on top of a RAID 10 using a HARDWARE 3ware raid card. The OS sees a hardware raid usually as one big drive. Is there a way to check the disks individually to see if any are failing, or throwing hard or scsi transport errors?

I have a Dell PowerEdge 2950 with PERC 5/i, and 6 disks. Two disks have one logical volume via a hardware RAID 1 and consist of CentOS 5 64-bit; the remaining four comprise a logical volume via a hardware RAID 0, and is all user data. One drive on the RAID 0 went bad. I removed it while the system was on, tried a reboot, and the system hangs at RedHat Linux... Starting I tried to boot

I have a Dell PowerEdge 2950 with 6 SAS disks and a PERC 5/i controller what won't do RAID 6. I plan to have 2 drives as RAID 1 for the OS, and the remaining 4 as RAID 6. Granted the PERC can do RAID 1, I'm tempted to do everything via software RAID. Thus, if anything goes wrong with the controller, I just need to obtain a new SAS controller and I'm back up. I learned my lesson

I'm looking for RAID options for at least 10 TB to attach to a Dell PowerEdge 2950 running RHEL 5 64-bit Server. The system will act as a single sign-on server for XP and Linux, thus storing user's data from mounted home directories exported from the server to various workstations. It may also house a database. I'll need a storage solution starting at least 10 TB. Most of the

I have a Dell PowerEdge 2950 and am looking to add more storage. I know a lot of factors can go into the type of answer given, but for present and future technology planning, should I look for a rack of SATA, SCSI, or fibre channel drives? Maybe I'm dating myself with fibre channel, and possibly SCSI? I may be looking to add a few TB now, and possibly more later. What are people

Hi everyone, I'm looking into setting up a SATA hardware raid, probably 5 to use with CentOS 4. I chose hardware raid over software mostly because I like the fact that the raid is transparent to the OS. Does anyone know of any SATA controllers that are well tested for this sort of usage? From what I can tell from googling, this is more or less where RHEL stands: Red Hat Enterprise Linux

First question - under CentOS 5, if I created non LVM partitions on a server with 6 disks - 2 disks are RAID 1 (OS), how do I remind myself or inquire the type of RAID of the remaining 4 disks (RAID 1 or RAID 5), without having to reboot? Second question - A newly installed server consisting of CentOS 5.2, straight off the DVD, I invoke a command by hand, realize I want to kill it soon after

Hello All, In the not too distant future I will be commissioning a new CentOS (5.4?) box with 4 identical SATA drives. I'd like to set them up as RAID 1+0 for speed and redundancy. I've read the RHEL 5 deployment guide on raid setup and it seems to cover the basics of software raid pretty well, but doesn't cover 1+0. Does anyone have a reference for that kind of

Is ZFS efficient at handling huge populations of tiny-to-small files - for example, 20 million TIFF images in a collection, each between 5 and 500k in size? I am asking because I could have sworn that I read somewhere that it isn''t, but I can''t find the reference. Thanks, Brian -- - Brian Gupta http://opensolaris.org/os/project/nycosug/

Hi This topic is perhaps not for this list, but it I'm running on a CentOS 4.4 and it seems that a lot of people here uses 3Ware and RAID volumes. I did a RAID migration on a 3Ware 9590SE-12, so that an exported disk grew from 700GB to 1400GB. The exported disk is managed by LVM. The problem now is that I don't really know what to do now to let LVM and my locigal volume to make use of

I remember seeing one with an example migrating from an old fashioned filesystem on a partition to a new filesystem on a mirrored lvm logical volume but one only one side of the mirror is set up at this time. First I need to copy stuff from what will become the second side of the mirror to filesystem on the first side or the mirror Then I will be ready to follow the rest of the tutorial and

I have a CentOS 4.2 system that was set up VERY quickly following the demise of its former life as a CentOS 3 server - you don't want the full story, but it had to be done quickly to get a company up and working following a slight disaster involving an electrician, a portable appliance safety tester and a pulled power cable - anyway, here's where I am at... Everything is running fine but

Last week we tried to install Centos on a brand new HP ML150 G2 with AIC-8130/ Marvell SATA Raid card and it was a no go. We tried a few other flavors of Linux as a test and all had trouble as well. Unfortunately time didn't permit so we opted for a Windows solution to get the box into production. We have never had a problem with IDE and Embedded SATA (Non Raid) Next time we want to

I'm trying to install CentOS 4 on an A8V on the PATA/Raid drives on the Promise controller. The Promise controller is recognized (sata_promise), but the PATA drives are not recognized. Base on this thread https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=147303 it seems that there is a patch which was merged in 2.6.11 to get pata working. Any ideas how to proceed? Thanks in advance

I have a raid 50 array on a 3ware controller. The box is running centos 6.5 and the file system is ext4. I'm going to try some other filesystems, but could anyone suggest any alternative raid setups as well as stripe sizes I should try? The old server uses the same controller on a centos 5.10 setup, using ext3, and it performs much faster i/o. The old 3ware setup is raid 5. -chuck --

Hi! I know this is a little bit offtopic, but i couldn't think of any other place where i can get uninfluenced first hand information on these controllers :) I've read about and experienced data loss/system lockup with older 3ware controllers, but the 3ware Escalade 7xxx (i'm especially interested in the 7850) sounds too good to ignore it (8 channels, 8 drives, raid 0/1/5/10,

Hi, I've seen comments about the poor performance of these cards with raid 5 configs. I have an old card with 3 x 500G IDE drives connected in raid 5 and I'm getting around 10mb/s write performance. :-( I'm seeing high iowait figures at times and associated very high cpu load average figures, probably because, under load, everything is stacked up waiting for the disks to actually