similar to: one-shot raid mirror to remote?

Has anything changed in updates that would affect md raid1 resync speed? I regularly swap a 750G drive and resync to keep an offsite copy and haven't paid enough attention to known when things changed but it seems to take much longer to sync than it did months ago, even if I unmount the partition and stop most other processes that might compete with it. -- Les Mikesell

I found this in the large and growing list of downloadable vmware appliances: http://www.vmware.com/vmtn/appliances/directory/316. I haven't run it yet, but it claims to provide a way to mirror running windows boxes over iscsi to vmware disk images, then allows you to boot that image under vmware as a replacement for the server with little downtime. Has anyone attempted something like this

What's the right way to set up >2TB partitions for raid1 autoassembly? I don't need to boot from this but I'd like it to come up and mount automatically at boot. -- Les Mikesell lesmikesell at gmail.com

Nmhxc Sent from my BlackBerry? wireless handheld -----Original Message----- From: centos-request at centos.org Date: Sat, 15 Mar 2008 12:00:07 To:centos at centos.org Subject: CentOS Digest, Vol 38, Issue 15 Send CentOS mailing list submissions to centos at centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos or, via email,

I have a 750Gb 3-member software raid1 where 2 partitions are always present and the third is regularly rotated and re-synced (SATA disks in hot-swap bays). The timing of the resync seems to be extremely variable recently, taking anywhere from 3 to 10 hours even if the partition is unmounted and the drives aren't doing anything else and regardless of what I echo into

What's "after hours" for an ISP with customers all over the world? That's why we have regular once-per-month scheduled outages. Same time, every month. Email reminders go out to customers and are announced on our web pages. People can't argue with a month's advance notice. -- Roger J. Weeks Systems & Network Administrator Mendocino Community Network On Apr

I recently set up a new system to run backuppc on centOS 5 with the archive stored on a raid1 of 750 gig SATA drives created with 3 members with one specified as "missing". Once a week I add the 3rd partition, let it sync, then remove it. I've had a similar system working for a long time using a firewire drive as the 3rd member, so I don't think the raid setup is the cause

I have a large disk full of data that I'd like to upgrade to SW RAID 1 with a minimum of downtime. Taking it offline for a day or more to rsync all the files over is a non-starter. Since I've mounted SW RAID1 drives directly with "mount -t ext3 /dev/sdX" it would seem possible to flip the process around, perhaps change the partition type with fdisk or parted, and remount as

If you have a disk with several partitions set up as members of a raid1 md devices, can you make a dd image of that disk to replace its matching drive with identical partitions or are there differences between the mirrored partitions? -- Les Mikesell lesmikesell at gmail.com

On Mon, Feb 2, 2015 at 11:37 PM, Jatin Davey <jashokda at cisco.com> wrote: > > I will test and get the I/O speed results with the following and see what > works best with the given workload: > > Create 5 volumes each with 150 GB in size for the 5 VMs that i will be > running on the server > Create 1 volume with 600GB in size for the 5 VMs that i will be running on >

On Tue, Mar 24, 2015 at 1:26 PM, Frank Cox <theatre at melvilletheatre.com> wrote: > On Tue, 24 Mar 2015 12:56:27 -0500 > Les Mikesell wrote: > >> Doesn't anyone have a list of the oldest >> kernel version for each Centos version you could be running and still >> avoid known problems? > > The best answer to your question is "the latest

Hi, I would like to get some input from people who have used these options for mounting a remote server to a local server. Basically, I need to replicate / backup data from one server to another, but over the internet (i.e. insecure channels) Currently we have been mounting an SMB share over SSH, but it's got it's own set of problems. And I don't know if this is optimal, or if I

Warren Young wrote on 6/28/2019 6:53 PM: > On Jun 28, 2019, at 8:46 AM, Blake Hudson <blake at ispn.net> wrote: >> Linux software RAID?has only decreased availability for me. This has been due to a combination of hardware and software issues that are are generally handled well by HW RAID controllers, but are often handled poorly or unpredictably by desktop oriented hardware and

Lol - spinning disks? Really? SSD is down to like 50cents a gig. And they have 1TB disks... slow disks = you get what you deserve... welcome to 2015. Autolacing shoes, self drying jackets, hoverboards - oh, yeah, and 110k IOPS 1TB SamSung Pro 850 SSD Drives for $449 on NewEgg. dumbass -----Original Message----- From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On Behalf

I sometimes clone working machines by separating RAID1 mirrors and letting each re-sync with a new partner in different machines. What will happen if a mismatched pair of these drives ever end up together in the same machine? If there is any chance that they would automatically be paired, is there a way to change the uuid when moving to a new machine so that wouldn't happen? -- Les

On earlier versions of Centos, I could boot the install CD in rescue mode, let it find and mount the installed system on the HD even when it was just one disk of RAID1 partitions (type=FD). When booting from the centos5 disk the attempt find the system gives a box that says 'You don't have any Linux partitions'. At the bottom of the screen there is something that says:

On Wed, January 7, 2015 10:33 am, Les Mikesell wrote: > On Wed, Jan 7, 2015 at 9:52 AM, Gordon Messmer <gordon.messmer at gmail.com> > wrote: >> >> Every regular file's directory entry on your system is a hard link. >> There's >> nothing particular about links (files) that make a filesystem fragile. > > Agreed, although when there are millions, the

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

I was trying to do a new install on RAID1 and my first drive happened to be partitioned correctly from previous use so I tried the 'clone partions' option in disk druid to create matching ones on the second drive and got this error message: "The source drive has partitions which are not constrained to the drive /dev/sda". What does that mean? -- Les Mikesell lesmikesell

On Wed, Jan 7, 2015 at 9:52 AM, Gordon Messmer <gordon.messmer at gmail.com> wrote: > > Every regular file's directory entry on your system is a hard link. There's > nothing particular about links (files) that make a filesystem fragile. Agreed, although when there are millions, the fsck fixing it is somewhat slow. >> It is mostly on aging hardware, so it >> is