10.9 update effects on software RAID drives

Hi everyone,
I would like to update my mac pro from 10.8 to 10.9 . I backed up everything but my major concern is that I have 2 HDDs that are RAIDed by the OS (software). The OS is on a seperate PCI SSD from OWC.
Is there any change that the software raid drives won't mount properly after 10.9 update?
Thanks,

Hi.
I tried the upgrade yesterday on a Mac Pro with a stand alone system drive and a mirrored RAID set currently being used as a scratch disk.
System disk is fine, but the scratch disk gives me the 'Initialize Disk?' dialog
So DON'T just upgrade to 10.9 when you are using a software RAID.
I didn't loose valuable data, it was primarily a lot of Final Cut render files, but I still wanna find a way to do the upgrade with having to copy and de-RAID the disks.
I'll be posting when I have any information on whats going wrong/how to do the upgrade and if any one gave any info, please share.
/Krut

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10.4.8 Server Update Panics w/ Software Raid

Hello,
I just installed OS X Server 10.4.7 on a new Mac Pro. This Mac Pro has 4x250 gb drives configured as a raid 10 volume.
I installed 10.4.7 server from the DVD, and when I attempt to update to 10.4.8, the machine panics on reboot. It panics right away, immediately when the machine starts on the grey screen with the Apple logo.
To test, I "unraided" the drives and install the server, and then installed the 10.4.8 update, which did not panick the machine.
I can only assume that one cannot install the 10.4.8 update on raided drives.
Thanks,
Caio

Sorry, started a new thread, should have just replied. See here to see how I dealt with this isssue:
http://discussions.apple.com/thread.jspa?threadID=669988&tstart=0

Software raid won't boot after updating to "mdadm" in mkinitcpio.conf

After a power outage I've discovetred the config I was using (with raid in mkinitcpio.conf) no longer works, it's mdadm now - that's fine. I've updated that and re-run mkinitcpio successfully, however my system is unable to boot from the root filesystem /dev/md2 like so:
Waiting for 10 seconds for device /dev/md2 ...
Root device '/dev/md2' doesn't exist. Attempting to create it.
ERROR: Unable to determine major/minor number of root device '/dev/md2'.
You are being dropped to a recovery shell
Type 'exit' to try and continue booting
/bin/sh: can't access tty; job control turned off
[ramfs /]#
As far as I can see from reading various threads and http://wiki.archlinux.org/index.php/Ins … AID_or_LVM I'm doing the right things now (although I'm not using lvm at all, which makes the installation document a little confusing).
I think I've included all the appropriate bits of config here that should be working. I assume I've missed something fundamental - any ideas?
menu.lst:
# (0) Arch Linux
title Arch Linux [/boot/vmlinuz26]
root (hd0,0)
kernel /vmlinuz26 root=/dev/md2 ro
initrd /kernel26.img
mkinitcpio.conf:
HOOKS="base udev autodetect pata scsi mdadm sata filesystems"
fstab:
/dev/md1 /boot ext3 defaults 0 1
/dev/md2 / ext3 defaults 0 1
mdadm.conf
ARRAY /dev/md1 level=raid1 num-devices=2 metadata=0.90 UUID=7ae70fa6:9f54ba0a:21
47a9fe:d45dbc0c
ARRAY /dev/md2 level=raid1 num-devices=2 metadata=0.90 UUID=20560268:8a089af7:e6
043406:dbdabe38
Thanks!

Hi magec, that's quite helfpul - I've certainly got further.
Before I was doing this to set up the chroot (which is what is suggested in the wiki article about setting up software raid):
mdadm -A /dev/md1 /dev/sda1 /dev/sdb1
mdadm -A /dev/md2 /dev/sda2 /dev/sdb2
mount /dev/md2 /mnt
mount /dev/md1 /mnt/boot
mount -o bind /dev /mnt/dev
mount -t proc none /mnt/proc
chroot /mnt /bin/bash
But based on your suggestion it's working better
mdadm -A /dev/md1 /dev/sda1 /dev/sdb1
mdadm -A /dev/md2 /dev/sda2 /dev/sdb2
mount /dev/md2 /mnt
mount /dev/md1 /mnt/boot
mount -t proc none /mnt/proc
mount -t sysfs none /mnt/sys
mount -n -t ramfs none /mnt/dev
cp -Rp /dev/* /mnt/dev
chroot /mnt /bin/bash
The boot is now getting further, but now I'm getting:
md: md2 stopped.
md: bind<sdb2>
md: bind<sda2>
raid1: raid set md2 active with 2 out of 2 mirrors
md2: detected capacity change from 0 to 32218349568
mdadm: /dev/md2 has been started with 2 drives.
md2: Waiting 10 seconds for device /dev/md2 ...
unknown partition table
mount: mounting /dev/md2 on /new_root failed: No such device
ERROR: Failed to mount the real root device.
Bailing out, you are on your own. Good luck.
/bin/sh: can't access tty; job contol turned off
[ramfs /]#
The bit that really confuses me is this:
[ramfs /]# cat /proc/mdstat
Personalities : [raid1]
md2 : active raid1 sda2[0] sdb2[1]
31463232 blocks [2/2] [UU]
md1 : active raid1 sda1[0] sdb1[1]
208704 blocks [2/2] [UU]
unused devices: <none>
[ramfs /]# mount /dev/md2 /new_root
mount: mounting /dev/md2 on /new_root failed: No such file or directory
[ramfs /]# ls /dev/md2
/dev/md2
[ramfs /]#
So the array is up, the device node is there but it can't be mounted? Very strange.
Last edited by chas (2010-05-02 11:24:09)

Adding A New Drive To A Software RAID 5 Array

Edit 3: Just mounted the partitions and I can delete them because they contain nothing special. Is it safe to expand the 2nd partition of each drive to fill up the left over 22 GB?
Edit 2: I just deleted all the partitions off of my new drive and created one partition, then added it to the array and it works just fine. My next question is, can I delete all the smaller partitions and expand /dev/sd[x]2 to reclaim all the space (about 70 GB)?
One of my drives failed and Western Digital sent me a new drive, except it was an external drive instead of an internal drive, so I cracked it open and the label looked different. Turns out it's just refurbished and it's the same model as my other drives (WD Caviar Green 3 TB).
I've read through the wiki article on Software RAID and created the partitions exactly the same as my other drives, but while creating the main 2.7 TB partition it says that the ending sector is out of range when it isn't. I'm new to all this so I have no idea what to do. From what I've read there normally aren't this many partitions per disk, correct? I also have md124, md125 and md126 for the other partitions. md127 is for the 2.7 TB partitions. I took the array out of my Thecus N4520. I have a 3 TB external drive and a 1TB internal, along with another 500 GB drive. Would I be better off at destroying the RAID set and creating a fresh RAID 5 set, considering I'm losing about 90 GB if I don't need the smaller partitions.
/dev/sdc
Disk /dev/sdc: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 00636413-FB4D-408D-BC7F-EBAF880FBE6D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 43941 sectors (21.5 MiB)
Number Start (sector) End (sector) Size Code Name
1 41945088 46139375 2.0 GiB FD00
2 47187968 5860491263 2.7 TiB FD00 THECUS
3 46139392 47187951 512.0 MiB FD00
4 2048 20973559 10.0 GiB FD00 i686-THECUS
5 20973568 41945071 10.0 GiB FD00
/dev/sdd
Disk /dev/sdd: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): C5900FF4-95A1-44BD-8A36-E1150E4FC458
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 43941 sectors (21.5 MiB)
Number Start (sector) End (sector) Size Code Name
1 41945088 46139375 2.0 GiB FD00
2 47187968 5860491263 2.7 TiB FD00 THECUS
3 46139392 47187951 512.0 MiB FD00
4 2048 20973559 10.0 GiB FD00 i686-THECUS
5 20973568 41945071 10.0 GiB FD00
/dev/sde
Disk /dev/sde: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 2B5527AC-9D53-4506-B31F-28736A0435BD
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 43941 sectors (21.5 MiB)
Number Start (sector) End (sector) Size Code Name
1 41945088 46139375 2.0 GiB FD00
2 47187968 5860491263 2.7 TiB FD00 THECUS
3 46139392 47187951 512.0 MiB FD00
4 2048 20973559 10.0 GiB FD00 i686-THECUS
5 20973568 41945071 10.0 GiB FD00
new drive: /dev/sdf
Disk /dev/sdf: 5860467633 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 93F9EF48-998D-4EF9-B5B7-936D4D3C7030
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860467599
Partitions will be aligned on 2048-sector boundaries
Total free space is 5813281700 sectors (2.7 TiB)
Number Start (sector) End (sector) Size Code Name
1 41945088 46139375 2.0 GiB FD00 Linux RAID
2 47187968 47187969 1024 bytes FD00 Linux RAID
3 46139392 47187951 512.0 MiB FD00 Linux RAID
4 2048 20973559 10.0 GiB FD00 Linux RAID
5 20973568 41945071 10.0 GiB FD00 Linux RAID
when I type in 5860491263 as the end sector gdisk does nothing, just wants more input. If I type +2.7T it accepts it, but really it just creates a partition that's 1KB in size!
I am able to create a 2.7 TB partition with an end sector of 5860467599, this won't screw anything up will it?
Edit 1: just tried it and got this
[root@ra /home/bran]# mdadm --add /dev/md127 /dev/sdf2
mdadm: /dev/sdf2 not large enough to join array
[root@ra /home/bran]# fdisk -l /dev/sdf
Disk /dev/sdf: 2.7 TiB, 3000559428096 bytes, 5860467633 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 93F9EF48-998D-4EF9-B5B7-936D4D3C7030
Device Start End Size Type
/dev/sdf1 41945088 46139375 2G Linux RAID
/dev/sdf2 47187968 5860467599 2.7T Linux RAID
/dev/sdf3 46139392 47187951 512M Linux RAID
/dev/sdf4 2048 20973559 10G Linux RAID
/dev/sdf5 20973568 41945071 10G Linux RAID
Last edited by brando56894 (2014-04-28 00:47:29)

Sorry I numbered them to show the flow of information, this was also just a place for me to store info as I worked through it. I managed to get it to work by creating a partition that takes up the whole drive and is actually 22 GB larger than all the other drives (since I found out that the had root, swap and home partitions that are no longer needed).
I should be able to resize the other partitions without a problem, correct? They're EXT4. Should I unmount the raid array and do them individually, remount the array, let it sync and do the next? Or just unmount the array, resize all of them, mount it and let it sync?

How to restore a software raid mirror after a drive failure

i set up a software raid mirror with two hard drives in a mac pro. then one failed as reported by disk utility. i replaced the drive. it does not seem possible to restore this raid short of copying the files to a third location and then erasing and establishing a new raid. is there a way to simply "restore"?

Question: Do I need special software to administer the Mac Pro RAID Card or the Xserve RAID Card?
Answer: Normal administration can be carried out using the RAID Utility (found in /Application/Utilities) or by using the raidutil command. For more information refer to the User’s Guide or man raidutil.
The command-line utility should be available in Single-User mode.
To run RAID Utility, you may need to boot to an alternate source of Mac OS to be able to manipulate the Boot drive.
This article suggests using the Make Spare command:
RAID Utility 1.0 Help > If a Disk Fails
Message was edited by: Grant Bennet-Alder

Driver update to support S.M.A.R.T. software from Drive Genius/Prosoft

I just purchased software from Drive Genius/Prosoft to maintain and defrag my harddrive. Upon installing I was informed that S.M.A.R.T. is unsuported. Tech support from Drive Genius suggested that my DVD equip is too old. She suggested that I try to download an updated driver. Any advice and suggestions? Thanks. Roger.

I don't understand how your DVD has anything to do
with SMART. S.M.A.R.T. stands for Self-Monitoring
Analysis and Reporting Technology. It is related to
the HD. Your HD might not support SMART. I don't see
how that prevents the software from doing a de-frag
etc.
These pages help explain SMART:
http://www.ariolic.com/activesmart/smart-technology.ht
ml
http://en.wikipedia.org/wiki/Self-Monitoring,_Analysis
,and_ReportingTechnology
TechTool Pro 4.x does support SMART.
MJ
OK, simply, how can I get t he program to run on my computer? Thanks.
Apologies, I am an artist, not a computer expert.
Again, thanks,
Roger

Software raid 1 drive(s) failed

Curious on what to do with a RAID 1 Drive (s) failure? I've searched the community and cannot find similar issue/answers.
Configuration:
One 1TB OS & App Drive is fine
Two 3TB RAID 1 Drives for Video scratch are fine
Two 2TB RAID 1 Data Drives are my issue
I'm using the software raid in OSX and it shows "2TB Data Drive/Mirrored Offline"
Both drives have "Failed" next to them
I have backup this Data Drive in Time Machine and a recent full back up to a single drive that is off site. I believe I have a good back up strategy with Time Machine and offsite back ups via Voyager S3. I guess we'll find out!
My question is how do I find out if it's a HW issue or SW issue with this configuration ? And then how to go about recovering them?
Initially when I looked in Disk Utility it appeared that only one of the 2TB drives had "Failed" next to it but now after a reboot "Failed" is next to both drives.
My initial hope was that one of the drives had failed and I'd be able to just replace that drive and the RAID System would rebuild from the other drive.
Any assistance would be appreciated.
Thanks

TommyH wrote:
My initial hope was that one of the drives had failed and I'd be able to just replace that drive and the RAID System would rebuild from the other drive.
RAID 1 just copies the same data to two (or more) drives at the same time, it's only for mission critical data loss requirements where a drive failure during writing would be catastrophic. Like taking purchasing orders or getting a phone call from ET for example.
RAID 0 is dangerous as the data path is separated to how many drives in the RAID 0 set, one drive glitches and all data is lost. But provides insane speeds.
RAID 5 is a much more reliable, it combines many drives (4 or more for more speed) splitting the data path but also has redundancy factor that if a drive dies it can be replaced and the data is recovered from the other drives. Usually a RAID 5 is in a external enclosure with it's own cooling and hardware controllers, not software based RAID where your CPU is being overloaded.
There are other forms of RAID some combinations like RAID 1+0, RAID 6, 10 and so forth, you can find out more about the more eclectic RAID types online.
RAID 5 is more ideally suited to video requirements for data storage, with perhaps a RAID 0 as a scratch disk or a RAID 0 + 1 (the RAID 0 is mirrored to another RAID 0) if your going to take a while working on it that increases the potential of failure.
Once the work is completed, it's sent to the RAID 5 where it's safe with it's redundancy and speed.
http://eshop.macsales.com/shop/hard-drives/RAID/Desktop
The thing to remmeber with the failed RAID 1 Data drive is the data is still on the drive, even though it failed and perhaps things are messed up a little on it on the directory. All the drive needs is to be told it's not part of a RAID 1 anymore, that it's a normal drive, a simple fix, but I don't know how to go about it.
You have two drives and two chances to recover the data off off, simply disconnect one data drive and reboot, see if it will mount and or you can repair the drive in Disk Utility.
If not pull one drive out and stick another blank one in there and download Data Rescue and simply recover the files to the new blank drive. DR works by simply reading the files themselve, not the file struture or anything else.
Software RAID is unreliable, it depends upon the CPU. Opt to get a external RAID where it's based in hardware instead. Use eSATA if all possible.
Also consider using backup software, like Carbon Copy Cloner which can be scheduled to make a backup of your data during the middle of the night. This way if something happens to either your boot drive or a data drive, the clone won't immediately copy the issue to the other drive like a RAID 1 does.
Also Carbon Copy Cloner makes "hold option" bootable OS X boot drive clones, which TimeMachine doesn't.
Also TM kicks in what, like once a hour? It's likely what caused your issue, CCC will work when you schedule it. TM is for consumers, not video pro's like yourself.
If you need even heavier iron as a external RAID setup and more expertise, then see these guys
http://www.macgurus.com/

Is there a firmware update for the Apple RAID Card [early 2009 Xserve] that will take it beyond the E-1.3.2.0 version and allow it to see 4TB drives?

Is there a firmware update for the Apple RAID Card [early 2009 Xserve] that will take it beyond the E-1.3.2.0 version and allow it to see 4TB drives?

I have a few of these RAID cards in a couple servers, and then I have an earlier version of the RAID card in a few different servers.
The earlier servers are running non-apple 1.5 TB drives. It will be interesting to learn if this firmware update will indeed allow me to boost the capacity by installing non-apple drives, as the firmware previously has not.
Ohh I'm excited to update and try! This will greatly help out if it does!

Backup Software For backing up Raid Drives and main hardrive system

i'm, looking for the best software for backing up raid drives. i have rocstor raids. they said retrospect was best but after reading reviews they were not that good. i use super duper but they said for raid drives you need more than a free program
any ideas
thanks

I use Time Machine in conjunction with SuperDuper for my backups. I tend to use the simplistic of >the restores in Time Machine for restoring files whereas I like the speed of SuperDuper if a clone is >required. I also like the redundancy of multiple backups by different techniques.
Yes I think its a good strategy. Time machine is great for "undeleteing" if you see what I mean but a clone gets things working again very quickly after a disaster and even if you don't have time to restore you can still boot your computer. I have CCC do an incremental backup every evening at 3am.

HT1338 i updated my mac software to os x 10.8.4, but my dvd drive isn`t working

i updated my mac software to os x 10.8.4, but my dvd drive isn`t working

Information.
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Question about Raid Driver Update V1.3.8.0

Hi.
Can anyone tell me whats the deal or what are the advantages of doing an update to the RAID driver Toshiba Windows XP MCE 1.3.8.0 ?
Also had another problem..i tried to install the refered driver and it made an error..my raid version is still the one i had prior and couldnt install this version.
Any help would be cool.
thanks

As far as I know the RAID driver need to be installed at the begging of the OS installation.
Unfortunately there are no any official documents about the corrections and advantages of any updates.
But I believe the newer driver could be compatible with more motherboards and controller.

Will OSX software Raid-0 on external drive be regonized elseware?

Are RAID setups created in Disk util recognized in other computers. Say i have 2 external drives (over eSata on my 08 mac pro) in a raid 0 from disk util, can I plug these two drives into another mac pro and have them work?
Basically, are software raid setups from disk utilily readible from all macs?

Both systems would have to have their own controllers or ports, but yes, they should move and work just the same on both.
There are Port Multiplier cases and controllers, and there are the 2 ODD ports people use, or direct connect SATA external controllers.
You can even create a RAID internal or external and move it and it will work, or change the drive bay and order of your drives, the RAID will still work and be intact.
What often doesn't work are eSATA/FW or eSATA/USB cases.
Mac Pro Discussion focus on using and expanding is here:
http://discussions.apple.com/category.jspa?categoryID=194

HT201514 I recently updated the Imac software, now i can't see my Wd back up drive in 'time machine' Its connected via firewire and i can see its connected if i check firewire on my mac.

I recently updated my IMac software to the latest version, now i can't see by WD back up drive in time machine. its conected to the firewire port ok and i can see it if i check firewire connections. The drive works ok on an old windows laptop. Any ideas.

leedssparky wrote:
Is it possible that i did this whilst updating the OS software whilst leaving the WD drive connected.
It's a good idea to eject and disconnect external HDs, just in case, but that shouldn't cause a problem.
Why when setting up time capsule, does it only look for WIFI drives through airport.
I think you're confusing Time Machine (the backup software) with a Time Capsule (Apple hardware combining a wireless router and HD). Unless you have a Time Capsule you want to back up to, there's no point to clicking the Set Up Time Capsule button, if that's what you mean:
I've attached the Firewire bus from system profiler, dont understand why i can see it there but not in TM.
There seems to be some sort of problem with the drive, since Disk Utility thinks it's fixed, but immediately the problem returns (per the first sample you posted).
How old is the drive?
If it's within the warranty period, you might want to contact WD or the place you bought it.

Raid Driver Update..

MSI released a new Raid Driver for my 990FXA-GD80, the older ver. is from 2009.. if I'm remembering correctly.
Can I update the driver version without a restore? Possibly using 'Repair'?
Thanks

xmad..
I'm running perfectly.. but, seeing an update (none for years).. I am curious if there is a benefit, or what the update features are. The older Raid driver installed now, was released before the surge of SSD use. So, like a Bios update.. should I, shouldn't I is the question?
Thanks,
Have a great New Years

I recently tried to update my iphone software via itunes but got an error and my iphone has gone to recovery mode and now it doesn't connects to my itunes. i tried everything but can't connect and apple mobile device(recovery mode) driver

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http://support.apple.com/kb/TS3694#error1

10.9 update effects on software RAID drives

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