similar to: XFS on a 25 TB device

Hello, It is not total off-topic since almost all connected servers will be RHEL and CentOS. :) We are considering to purchase new storage system. The most probably we will be choosing between HP (EVA6000), EMC (CX3-20C) and Hitachi (similar model). iSCSI connection is also required. What are your experienced with listed systems? What to avoid? What ot expect? Now I just know

Hi, over time the requirements and possibilities regarding filesystems changed for our users. currently I'm faced with the question: What might be a good way to provide one big filesystem for a few users which could also be enlarged; backuping the data is not the question. Big in that context is up to couple of 100 TB may be. O.K. I could install one hardware raid with e.g. N big drives

Hello all, I have yesterday after some typos, sent my ext3 RAID5 array to the void... I want to recreate it now, but I read on http://wiki.centos.org/HowTos/Disk_Optimization that you can optimize the filesystem on top of the RAID. Will this wiki article be exactly the same for XFS? Is it worth the trouble to also create an LVM volume on the RAID array? Regards, Coert

Hello listmates, I would like to build a 12-15 TB RAID 5 data server to run under ContOS. Any recommendations as far as hardware, configuration, etc? Thanks. Boris.

Hi, We are currently rolling over our SAN (FC4700 to CX700) and have now reached the data migration stage. I need to move the data files on my current /u01 ocfs file system (on FC4700) to a new ocfs file system (on CX700) which I want to keep as the same /u01 mount point on the hosts. With a normal file system I would just mount the new file system to a temporary mount point, copy the data,

I am trying to generate a set of random numbers that fulfill the following constraints: X1 + X2 + X3 + X4 = 1 aX1 + bX2 + cX3 + dX4 = n where a, b, c, d, and n are known. Any function to do this? Thanks, -Ala' [[alternative HTML version deleted]]

Hi everyone, CUDA allows to call some runtime functions also from the device code. On a multi-GPU system this allows the GPU to determine its device id on its own via cudaGetDevice(). Unfortunately i cannot get it working when compiling with clang. When compiling with nvcc relocatable device code needs to be set to true (-rdc=true) and the cudadevrt is needed when linking [0]. I did not

Stephen John Smoogen wrote: > On 20 September 2017 at 10:47, hw <hw at gc-24.de> wrote: >> >> Hi, >> >> xfs is supposed to detect the layout of a md-RAID devices when creating the >> file system, but it doesn?t seem to do that: >> >> >> # cat /proc/mdstat >> Personalities : [raid1] >> md10 : active raid1 sde[1] sdd[0] >>

I have a simple perl script that every few hours pings the handful of machines on my LAN. Lately I've sometimes been getting ping of 192.168.0.1 succeeded ping of 192.168.0.7 succeeded ping of 192.168.0.5 FAILED ping of 192.168.0.6 succeeded ping of 192.168.0.9 succeeded This machine in question has been running Centos faithfully for about six years and no recent changes to it have been

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > Message: 1 > Date: Wed, 18 Jun 2003 14:16:57 +0200 > From: Farget Vincent <farget@olfac.univ-lyon1.fr> > Subject: [Samba] 'Little' problems with Samba v2.2.3a-12.3 (Debian > Woody) and PRINTERS !! > To: samba@lists.samba.org > Message-ID: <20030618121659.0AC117D4F@olfac.univ-lyon1.fr> > Content-Type:

Chris Adams wrote: > Once upon a time, hw <hw at gc-24.de> said: >> xfs is supposed to detect the layout of a md-RAID devices when creating the >> file system, but it doesn?t seem to do that: >> >> >> # cat /proc/mdstat >> Personalities : [raid1] >> md10 : active raid1 sde[1] sdd[0] >> 499976512 blocks super 1.2 [2/2] [UU] >>

Should it be possible to hot-swap SATA drives with Centos5? It doesn't seem to work on my system. Removing an unmounted drive locked the system up, and leaving one out at bootup makes the devices change names and keeps grub from finding /boot on a scsi drive that is shifted up. -- Les Mikesell lesmikesell at gmail.com

On 06/25/2015 01:20 PM, Chris Adams wrote: > ...It's basically a way to assemble one arbitrary set of block devices > and then divide them into another arbitrary set of block devices, but > now separate from the underlying physical structure. > Regular partitions have various limitations (one big one on Linux > being that modifying the partition table of a disk with in-use

Hi, xfs is supposed to detect the layout of a md-RAID devices when creating the file system, but it doesn?t seem to do that: # cat /proc/mdstat Personalities : [raid1] md10 : active raid1 sde[1] sdd[0] 499976512 blocks super 1.2 [2/2] [UU] bitmap: 0/4 pages [0KB], 65536KB chunk # mkfs.xfs /dev/md10p2 meta-data=/dev/md10p2 isize=512 agcount=4, agsize=30199892 blks

Hello everyone, This is not directly related to CentOS but still: we are trying to set up some storage servers to run under Linux - most likely CentOS. The storage volume would be in the range specified: 8-15 TB. Any recommendations as far as hardware? Thanks. Boris. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi All, I have been trying out XFS given it is going to be the file system of choice from upstream in el7. Starting with an Adaptec ASR71605 populated with sixteen 4TB WD enterprise hard drives. The version of OS is 6.4 x86_64 and has 64G of RAM. This next part was not well researched as I had a colleague bothering me late on Xmas Eve that he needed 14 TB immediately to move data to from an

I have looked for several days and can not find the answer to my problem, but I'm sure it has to be a simple issue. I'm trying to map drives inside Windows Server 2003 Terminal Session from a local Samba server but can't get connected. I figure the problem is in Windows Registry but can't find web page on what needs to be changed to get this working. I built a new Windows 2003

I know that there was a discussion on this about a year back, and there is a bug 556 this week that mentions TCP_NODELAY. However, when I use ssh through a pipe (e.g., to tunnel through an HTTP proxy using CONNECT) I see: getsockopt TCP_NODELAY: Socket operation on non-socket How do I tell which end is generating this (I'm assuming the local side, which is running through the pipe). Also,

Hi all, Does anybody know why unlike so many Linux distros (Fedora, Ubuntu, OpenSUSE) CentOS does not come with XFS support by default but rather requires custom modifications after the install in order for you to be able to support XFS on your CentOS machine? Just seems a little odd given how much CentOS is oriented to be used as a server OS. Thanks. Boris.

Is it possible to use DTrace to display the number of arguments and their types for userland or kernel functions that are not explicitly instrumented or documented by their authors? We''re talking about functions provided by Veritas VxVM/VxFS and the like, and for example, we might want to try tracing I/Os from App => VxFS => VxVM => ssd driver to see where I/Os get aggregated or