(solved)raid 0 questions

I have to 40 GB drives. First one w/ my /, /boot, and /home the other w/ mostly my music.
I would like to combine the 2 drives and was wondering how to go about this w/o a reinstall if possible.
Can I combine the 2 the way they are now? Can I combine them if I removed all the data off the second? Or do I need to do a clean install?
Last edited by somairotevoli (2007-09-21 06:26:41)

here's my fstab
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
none /dev/pts devpts defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/md0 / ext3 defaults,data=journal 0 0
/dev/md2 swap swap defaults 0 0
/dev/md1 /boot ext3 defaults 0 0
/dev/md3 /home ext3 defaults,data=journal 0 0
/dev/cdrom /mnt/cd iso9660 ro,user,noauto,unhide 0 0
/dev/dvd /mnt/dvd udf ro,user,noauto,unhide 0 0
/dev/fd0 /mnt/fl vfat user,noauto 0 0
and here's my menu.lst
# (0) Arch Linux
title Arch Linux [/boot/vmlinuz26]
root (hd0,0)
kernel /vmlinuz26 root=/dev/md0 ro md=0,/dev/sda3,/dev/sdb3 vga=792 rootflags=data=journal
initrd /kernel26.img
and yet output of tune2fs -l /dev/md0 stll says
Default mount options: (none)
I was thinking maybe I need to force a filesystem check on it to make it stick, yet
shutdown -F -r now
or
touch /forcefsck
do nothing after a reboot. No file check gets ran.
I built my md devices according to the wiki on raid/lvm (skiping the lvm part) and using raid 0 for / and /home and raid 1 for /boot and swap.
My raid setup isn't the problem here as all works as it should... I just don't understand why the full journal does not want to take.
Last edited by somairotevoli (2007-09-20 20:17:31)

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Challenging question! (Does anyone how to solve this Javabat question?)

Does anyone how to solve this Javabat question?
Here is the link:
http://www.javabat.com/prob?id=Array3.linearIn

I'm a little surprised by the implied rating of this problem... it's a plain to-way merge. You can use the same template as for the merging step in merge sort:
public boolean linearIn(int[] outer, int[] inner) {
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Msi k2n9 diamond raid problems/questions

Hi, yesterday I bought 2 hard drives western digital 1 TB Caviar Blue 32mb cache each and wanted to make a raid stripe array, so they work as one and are twice as fast.
I had problems installing windows XP, so I tried windows 7. It detected the raid array, partitioned it, and installed the windows, but in the device manager I got other devices -> RAID Controller and no drivers for it. I also have a Coprocessor, but that may be the chipset drivers, that I didn't install yet.
The windows 7 is currently installed on the array, but I can't really see the performance difference. All disk information tools say it's currently 32 cache, shouldn't it be 64? And the speed is the same ~ 40-60 mb/s copy rate, 100mb/s sata-sata transfer rate.
With windows XP I tried installing the extra drivers from the web site from a floppy drive during installation, but the installation didn't detect the array at all.
Can somebody give me a clue how to fix my problem? And if you have any idea what software can I use to check the raid transfer rate and proper performance?

Quote from: Fredrik on 28-October-10, 02:45:27
Hello! It is a bit "dangerous" to help someone without knowing what the system looks like. What little you said, K2N9 motherboard, doesn't exist. Have a look here http://www.msi.com/index.php?func=prodarchive&maincat_no=1 Go to the title "AM2", because a fair guess lands you there. In order to help with your driver questions we need to know what the drivers are for, you see. An alternative would be to go to Nvidia's site, where you can pick most things you need: www.nvidia.com.
Coprocessor? Might it be - if you in fact have a processor - there are more than one core?
The cache thing is a little new to me, but one must remember you have one disk now, not two. Partitioning deals with the first bytes of data on this single hard disk, and not with the "RAM" memory.
Noticing a difference can be hard, but if you were to return to no-RAID status you will, for a little while, hate the longer boot-up time and slower start of programs. Since it runs at all, 100 mb/s read time is not out of order.
well i misplaced the numbers, it's k9n2, it's not that big mistake, and I know my system well. I have two disks, but one array, and i think the cache must be 2x, because the idea of raid 0, simultaneously writing bits on both disks. The logical idea is that if you write something to e drive with 32 mb cache you will be able to write the same thing on two drives with 32 mb cache each which makes it 64 mb
The coprocessor part is solved, after I installed the chipset drivers, but the raid thing is still there.

RAID & FCP Questions

I have been having trouble with multicam editing of AVCHD material and have been advised that the reason for the problems is the speed of my drives and RAID is recommended. For more information on this discussion see:
http://discussions.apple.com/message.jspa?messageID=10545204#10545204
So, I am considering putting three 1.5TB Seagate Baracuda 7200rpm drives in slots 2, 3, 4 and create a RAID of the three drives to overcome the drive R/W speed issue and hopefully be able to label this drive as "H:" for the reasons stated below. However, some serious considerations:
1. I have nearly 800GB of FCP project data (media) on the drive that is currently in slot 2 - AMEDIA_1.
2. I would like to remove that drive AMEDIA_1 then mount it in an external drive USB case and copy it (AMEDIA_1) to the newly configured RAID drive bank (hopefully labeled as "H:" drive) to resolve the slow R/W drive access problems.
So, my questions are:
A. Will the media being read from AMEDIA_1 from an external case be stripped via the RAID 0 utility so that the data is spread across the three drives to circumvent the problem I'm currently having?
B. Any problems RAID'ing 1.5TB drives or should I limit it to 1.0TB?
C. Any problems with my idea here?
D. Will my FCP's recognize the path to the respective files and media assuming I am able to label the RAID bank as Drive H: ?
E. If a drive fails in the RAID bank is the entire bank dead and all data lost?
F. Is there any question I should be asking that I am not since I'm not that up to speed on Mac nor RAID yet?
Thanks in advance to those who take the time to read and respond to this lost sheep and feel free to ask any questions for clarification.
SYSTEM: MacPro 2.8GHz Xeon Quad Core x 2, Nvidia 8800 GT 512MB, 4GB Ram, 1667 FSB, Snow Leopard 10.6.1?, Final Cut Suite 3, 7200rpm 320GB OS HDD.
Additional Info & Question: If possible, I will want to remove the Windows XP Pro partition if that is possible at the same time.

This should work. Just make sure to keep the copy of the Amedia_1 just in case you have a problem with the Raid.
"So, I am considering putting three 1.5TB Seagate Baracuda 7200rpm drives in slots 2, 3, 4 and create a RAID of the three drives to overcome the drive R/W speed issue and hopefully be able to label this drive as "H:" for the reasons stated below. However, some serious considerations:"
Seagate baracuda are pretty sound. They come with a 5 year warranty. I have only had to send one back in 10 that I have bought. Keep in mind until they come up with something else hard drives can always fail for various reasons. So always back up. With a O raid with no redundancy, you are spreading the liability across three drives. You will get the speed you need but as long as you back up the work you will be fine. One of the things I do with raids is I only put media on them so I can replace it easier if necessary from my backup or original tape if you have it. Project, graphics, and anything else not media I put in a project folder on a what I like to call a work drive in a single slot. I also back that up if I do not have redundancy.
So, to sum up. Mount the Amedia drive in an external case.
Build a raid volume with the Baraccudas.
Copy (not move) the files to the raid "Volume"
Unmount the AMedia drive and set aside for safe keeping
Launch your project and reconnect the media in final cut when it prompts you to from the new raid volume.
Your speed problems should be solved.
(keep in mind that multicam editing need alot of speed the more cams you add)
Make sure you delete all window anything from your Mac. Window is a waste. The more you use Mac and FCP studio the more you will see what I mean. Boot camp and all that partition your Mac so you can run windows too is for indecisive suckers.
I will get off my soap box now.
Best of luck.
B Miller
Archetype HD Editorial LLC

RAID 1 Question

I recently set up my system in a RAID 1 configuration (striping) and have a question:
At start up I am able to invoke the NVIDIA RAID utility. My array has a “N/A” in the bootable column. Never the less, I am able to boot the system.
From what I have read there should be a “Y” in the bootable section.
I THINK I forgot to format the new WD disk as bootable. In addition I THINK I answered “NO” when asked if I wanted to clear the array when I created it.
If I did screw up – would the following fix things? Do I even need to fix things since it seems to work?
(1)   Remove the new WD drive from the array.
(2)   Reformat the drive with the boot files.
(3)   Add the newly formatted (and bootable) WD disk back into the array.
(4)   Answer “Y” when asked to clear the array (I hate these type questions because the manual does not make it CLEAR what is being cleared – you sure hate to clear the DISKS by mistake – is it the ARRAY being cleared?).
(5)   Synchronize the array to get the preserved data from the original disk back onto the new WD disk.
My system is:
MS-7250 SLI Platinum Rev. 1.0 (BIOS 1.8) with AMD 5400+ CPU
Vista Home Premium 64-bit
(2) 1mb Mushkin 800 MHz Dual Channel memory
Antec NSK4400 case with a replacement Antec Truepower 2.0 430 watt power supply
Max. Load +3.3V   28.0A, +5V 35A, +12V1 17A, +12V2 17A, +5V SB 2.0A, -12V 1.0A
Hitachi Deskstar HDT722525 DLA380 & WD2500AAJS, 250GB SATA HDs in RAID 1 Array
WD 8.4GB EIDE HD (backup drive)
3D Fuzion PCI-e graphics card (based on the Nvida GeForce 6200 LE chipset).
Generic Floppy
Logiteh keyboard & Microsoft mouse
Memorex DVD+/- DLRWL16 double layer CD

You'll have to clear up some confusion first: RAID-1 is mirroring, not striping... which is a big difference in how you proceed. Since it sounds, from what you want to do that you have a mirror I'll answer with that assumption.
Are you sure the array is "healthy" - it shows in NVidia's MediaShield/Storage Management as such? Before you break anything, take a look at the MBR with www.bootitng.com's Partition Work utility: press Esc twice when booting from the media to get to the maintenance desktop. If it finds a problem with its Properties, let it fix it.
1) Why?
2) There's no need to format a drive which is going to be added to an array; in fact a zeroed drive would probably be best.
4) Clear the Data will overwrite the MBR and clobber access to the data - it does not actually touch the data areas, but usually you don't want to do that. If you make a mistake, BootitNG can undo it by using its Undelete option in Partition Work, which scans a drive looking for partition markers and reconstructs the MBR.
5) Rebuilding the array might be useful but I've no idea why your array is not allowing the bootable option - never seen that.
The method I use to build a RAID-1 array is to assign both controllers/drives to RAID in main BIOS but in NVRaid BIOS, assign only the original disk with the data as a single drive striped array, leaving the "new" 2nd drive as unassigned to an array. Boot into Windows and use MediaShield to Convert/Migrate the striping array to a mirror which will pick up the 2nd drive and build the mirror array.

[Solved] RAID 5 degraded after 3.13 upgrade

Hi there,
after upgrading my home server to the latest kernel 3.13 I've found out, that my RAID 5 got degraded. One of the drives has been kicked out, but I don't know why. The drive seems okay, I've also done a SMART short test, completed without any errors. The only suspicious looking error message, when upgrading to Linux 3.13 was:
ERROR: Module 'hci_vhci' has devname (vhci) but lacks major and minor information. Ignoring.
This is mdstat output:
[tolga@Ragnarok ~]$ cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md127 : active raid5 sda1[0] sdc1[3] sdb1[1]
5860145664 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/3] [UUU_]
unused devices: <none>
smartctl:
[tolga@Ragnarok ~]$ sudo smartctl -a /dev/sdd
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.13.4-1-ARCH] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Red (AF)
Device Model: WDC WD20EFRX-68AX9N0
Serial Number: [removed]
LU WWN Device Id: 5 0014ee 2b2cd537a
Firmware Version: 80.00A80
User Capacity: 2,000,398,934,016 bytes [2.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-2 (minor revision not indicated)
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Fri Feb 21 22:26:30 2014 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: (26580) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 268) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x70bd) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 164 163 021 Pre-fail Always - 6766
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 273
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 1954
10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 273
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 6
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 266
194 Temperature_Celsius 0x0022 115 104 000 Old_age Always - 35
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0
SMART Error Log Version: 1
ATA Error Count: 306 (device log contains only the most recent five errors)
CR = Command Register [HEX]
FR = Features Register [HEX]
SC = Sector Count Register [HEX]
SN = Sector Number Register [HEX]
CL = Cylinder Low Register [HEX]
CH = Cylinder High Register [HEX]
DH = Device/Head Register [HEX]
DC = Device Command Register [HEX]
ER = Error register [HEX]
ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 306 occurred at disk power-on lifetime: 1706 hours (71 days + 2 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
04 61 02 00 00 00 a0 Device Fault; Error: ABRT
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ef 10 02 00 00 00 a0 08 22:17:38.065 SET FEATURES [Enable SATA feature]
ec 00 00 00 00 00 a0 08 22:17:38.065 IDENTIFY DEVICE
ef 03 46 00 00 00 a0 08 22:17:38.064 SET FEATURES [Set transfer mode]
ef 10 02 00 00 00 a0 08 22:17:38.064 SET FEATURES [Enable SATA feature]
ec 00 00 00 00 00 a0 08 22:17:38.064 IDENTIFY DEVICE
Error 305 occurred at disk power-on lifetime: 1706 hours (71 days + 2 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
04 61 46 00 00 00 a0 Device Fault; Error: ABRT
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ef 03 46 00 00 00 a0 08 22:17:38.064 SET FEATURES [Set transfer mode]
ef 10 02 00 00 00 a0 08 22:17:38.064 SET FEATURES [Enable SATA feature]
ec 00 00 00 00 00 a0 08 22:17:38.064 IDENTIFY DEVICE
ef 10 02 00 00 00 a0 08 22:17:38.063 SET FEATURES [Enable SATA feature]
Error 304 occurred at disk power-on lifetime: 1706 hours (71 days + 2 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
04 61 02 00 00 00 a0 Device Fault; Error: ABRT
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ef 10 02 00 00 00 a0 08 22:17:38.064 SET FEATURES [Enable SATA feature]
ec 00 00 00 00 00 a0 08 22:17:38.064 IDENTIFY DEVICE
ef 10 02 00 00 00 a0 08 22:17:38.063 SET FEATURES [Enable SATA feature]
ec 00 00 00 00 00 a0 08 22:17:38.063 IDENTIFY DEVICE
Error 303 occurred at disk power-on lifetime: 1706 hours (71 days + 2 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
04 61 02 00 00 00 a0 Device Fault; Error: ABRT
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ef 10 02 00 00 00 a0 08 22:17:38.063 SET FEATURES [Enable SATA feature]
ec 00 00 00 00 00 a0 08 22:17:38.063 IDENTIFY DEVICE
ef 03 46 00 00 00 a0 08 22:17:38.063 SET FEATURES [Set transfer mode]
ef 10 02 00 00 00 a0 08 22:17:38.063 SET FEATURES [Enable SATA feature]
ec 00 00 00 00 00 a0 08 22:17:38.062 IDENTIFY DEVICE
Error 302 occurred at disk power-on lifetime: 1706 hours (71 days + 2 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
04 61 46 00 00 00 a0 Device Fault; Error: ABRT
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ef 03 46 00 00 00 a0 08 22:17:38.063 SET FEATURES [Set transfer mode]
ef 10 02 00 00 00 a0 08 22:17:38.063 SET FEATURES [Enable SATA feature]
ec 00 00 00 00 00 a0 08 22:17:38.062 IDENTIFY DEVICE
ef 10 02 00 00 00 a0 08 22:17:38.062 SET FEATURES [Enable SATA feature]
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed without error 00% 1954 -
# 2 Short offline Completed without error 00% 0 -
# 3 Conveyance offline Completed without error 00% 0 -
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
This is my mdadm configuration:
[tolga@Ragnarok ~]$ cat /etc/mdadm.conf
ARRAY /dev/md/Asura metadata=1.2 UUID=34bab60a:4d640b50:6228c429:0679bb34 name=Ragnarok:Asura
I've checked all partition tables, everything seems ok. "Error 30[x] occurred at disk power-on lifetime: 1706 hours (71 days + 2 hours)" seems to be a one-time event, which happened on 1706 hours (I don't know why; no power loss or something similar). Other than those smartctl errors, everything seems fine. I've also inspected the drive; no suspicious noises or anything else, works like the other 3 drives. Am I safe to simply re-add the drive using "sudo mdadm --manage --re-add /dev/md127 /dev/sdd1" and let it re-sync or should I flag it as failed and then re-add it to the RAID?
I am using 4x 2TB Western Digital Red drives in a RAID 5, which are about 1 year old and they ran perfectly fine until now. The server is currently shut down until this problem is fixed. I currently got a partial backup of my data (most important ones) and will make a full backup, before attempting a repair. At the moment, I'm still able to access all my data, so nothing's wrong there.
So, what do you guys think, what should I do?
Last edited by tolga9009 (2014-09-13 12:48:13)

Thank you brian for the fast reply. I've backed up all my important data and tried the command. It's not working ...
[tolga@Ragnarok ~]$ sudo mdadm --manage --re-add /dev/md127 /dev/sdd1
mdadm: --re-add for /dev/sdd1 to /dev/md127 is not possible
[tolga@Ragnarok ~]$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1.8T 0 disk
ââsda1 8:1 0 1.8T 0 part
ââmd127 9:127 0 5.5T 0 raid5 /media/Asura
sdb 8:16 0 1.8T 0 disk
ââsdb1 8:17 0 1.8T 0 part
ââmd127 9:127 0 5.5T 0 raid5 /media/Asura
sdc 8:32 0 1.8T 0 disk
ââsdc1 8:33 0 1.8T 0 part
ââmd127 9:127 0 5.5T 0 raid5 /media/Asura
sdd 8:48 0 1.8T 0 disk
ââsdd1 8:49 0 1.8T 0 part
sde 8:64 0 59.6G 0 disk
ââsde1 8:65 0 512M 0 part /boot/efi
ââsde2 8:66 0 4G 0 part [SWAP]
ââsde3 8:67 0 54.6G 0 part /
ââsde4 8:68 0 512M 0 part /boot
Out of curiosity, I've compared "mdadm -E" of the corrupted and a healthy drive. Here's the output:
[tolga@Ragnarok ~]$ diff -u sdc sdd
--- sdc 2014-02-21 23:28:51.051674496 +0100
+++ sdd 2014-02-21 23:28:55.911816816 +0100
@@ -1,4 +1,4 @@
-/dev/sdc1:
+/dev/sdd1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
@@ -14,15 +14,15 @@
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=1167 sectors
- State : clean
- Device UUID : 4ce2ba99:645b1cc6:60c23336:c4428e2f
+ State : active
+ Device UUID : 4aeef598:64ff6631:826f445e:dbf77ab5
- Update Time : Fri Feb 21 23:18:20 2014
- Checksum : a6c42392 - correct
- Events : 16736
+ Update Time : Sun Jan 12 06:40:56 2014
+ Checksum : bf106b2a - correct
+ Events : 7295
Layout : left-symmetric
Chunk Size : 512K
- Device Role : Active device 2
- Array State : AAA. ('A' == active, '.' == missing, 'R' == replacing)
+ Device Role : Active device 3
+ Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing)
So, I guess my only way to fix this is remove the faulty drive from the RAID, zero out the superblock and then re-add it as a new drive. Or is there any other way to fix this?
//Edit: I've used "mdadm --detail /dev/md127" and found out, that the faulty drive wasn't even listed anymore. So instead of using "re-add", I simply added it as a new drive and it's resyncing now. In about 220mins, I'll know more ! Is there a way to check for corruption after syncing the drives?
//Edit: ^ this worked. My drive probably didn't got kicked after the 3.13 upgrade, but I've simply noticed it then. The drive seems to be kicked after ~1700 hours for some unknown reason - I've now disconnected and reconnected all drives to opt out any wiring issues. Since the drive was out of sync, simply re-adding it didn't work. I had to manually add it to the array again and this caused a resync, which took around 3,5 hours. I think that's okay for a 4x 2TB RAID 5 array. Everything is working fine again, no data corruption, nothing. I'll mark it as solved.
Last edited by tolga9009 (2014-09-13 12:59:22)

Mirrored RAID Set Questions

I initially set up a mirrored RAID set up on my system drive as a means of backing up my files. I've since decided I'd like to use Time Machine instead. When I try and break up the RAID set using Disk Utility, a lock icon appears next to the RAID set and I'm unable to "delete" the set. My guess is that I need to reboot off a different system, but since Lion didn't come with an install disc, and since Lion doesn't set up a Recovery HD on RAID sets, how would I go about unlinking this mirrored RAID set?
Conversely, I inadvertantly unlinked a different RAID set and would like to reconnect them, but Disk Utility says it'll erase all the data on the drives before it establishes the connection. Is there a way to reconnect a mirrored RAID set that has been disconnected?

For the first question, go back to the App Store download Lion again but before it begins the install stop the process and create a flash drive installer. See How to make a bootable Lion install disc or drive .
Remember you have to make sure the install process doesn;t proceed because once Lion is installed the installer app will be removed from your HD.
Sorry can;t help with the second question.
regards

RAID 1 question for external drives...

Hope this is the right category for this question...
I have a 2-dock external hard drive (Icy Dock with eSATA and USB) and just put in two 2TB drives to handle all my video. When I plug it into my MBP (via USB), the LED indicators - from Icy Dock's shoddy online "manual" - tell me that one drive is "rebuilding" the other.
It is taking a VERY long time - now at about 24 hours, and the lights on the drive are still blinking. My questions:
- When the computer went to sleep, the rebuilding on the hard drive stopped. When I woke up the computer, it began again. Did it start the whole process over?
- The drive shows up on the desktop, and small files copy onto it fine. Can I go ahead and start the big copy of all my movie files before the rebuild is complete, and it'll make the RAID happen when it happens?
much obliged!

Hope this is the right category for this question...
I have a 2-dock external hard drive (Icy Dock with eSATA and USB) and just put in two 2TB drives to handle all my video. When I plug it into my MBP (via USB), the LED indicators - from Icy Dock's shoddy online "manual" - tell me that one drive is "rebuilding" the other.
It is taking a VERY long time - now at about 24 hours, and the lights on the drive are still blinking. My questions:
- When the computer went to sleep, the rebuilding on the hard drive stopped. When I woke up the computer, it began again. Did it start the whole process over?
- The drive shows up on the desktop, and small files copy onto it fine. Can I go ahead and start the big copy of all my movie files before the rebuild is complete, and it'll make the RAID happen when it happens?
much obliged!

3-Drive/4-Drive RAID setup questions

I'm contemplating purchasing a new 8-core Mac Pro. I understand RAID but I'm not an expert. That said, I'm thinking of doing one of the following but I don't know if both are doable:
One setup is 1 hard drive for Mac OS X, and 3 RAID drives for the video capture (3TB total RAID 0 Seagate 7200rpm drives).
Or, my question, can I just RAID 0 all 4 drives together and then create a partition for Mac OS X? It seems like this would give A LOT faster bootable drive, plus the benefits of seperating the media storage from the operating system.
The reason I ask now is this makes a difference in my purchase decision. If I can RAID all 4 drives together, do they all have to be the same capacity for RAID 0? If not, I'll just get a standalone 320GB drive for the OS, and RAID the other three 1TB drives together.
Last question, would it help to use a dedicated RAID card like the CalDigit card (or Apple card) instead of software RAIDing within Mac OS X?
Thanks in advance.

First off - DO NOT put your system on your capture RAID. No no no. bad bad bad.
Yes you can RAID your other three drives into a RAID 0 configuration using Disk Utility. All drives should be the same size. Recognize two things with this setup --
1. If your system crashes, you loose the RAID partition as it is created and maintained through system software.
2. If you loose one of the three drives, you loose all the information on all three drives.
A more secure way to go is with a hardware RAID controller. Apple sells one with the MacPros and Caldigit has one as well.
With the Caldigit you can set up the 3 drives as a RAID 5 which will give you data security. I'm not sure what RAID configurations beyond 0 the Apple card supports.
Good luck.
x

RAID 0 Questions - advice needed

I am stepping up to a new BTO Mac Pro (2.8Ghz with 8GB third-party RAM) and considering the Apple RAID Card vs. Software RAID. I have a few questions regarding RAID 0 on the startup volume and hardware vs. software RAID. I am a graphic designer and running Adobe CS3 and working often with pretty large files.
1. Does RAID 0 on a startup volume offer any performance boost if working data is on another volume? Does the working volume need to be in RAID 0 or RAID 5 to reap the performance beneftis. This is a point I am not entirely clear on yet.
2. I understand the risks of running RAID 0, especially on a startup volume. Any advice on whether or not this offers any real world performance boost?
- OR -
Would a single Raptor offer similar results. Or better yet, would a partial-stroked 500GB SATA II disk offer the same results as a single Raptor at a fraction of the cost, without the RAID 0 risks?
2. Is a hardware RAID card (i.e. the Apple RAID Card or better yet, the new CalDigit RAID Card for less $$$) a better option than software RAID (either Apple or SoftRAID)? With a RAID 0 startup volume and a RAID 1 pair for storage, will hardware RAID offer any performance gains? Or would a single startup volume with a 3-disk RAID 5 storage volume be a better option (I know RAID 5 is not possible with software RAID).
3. Any advice/feedback on the Apple RAID Card? I have read some horror stories about battery charging, at least initially. I have not seen much about the strange recharge cycle which apparently can cripple your machine for days every 3 months. The new CalDigit RAID card appears to be very promising. Supports the 4 internal drive bays as well as external drives, which the Apple card does not.
Thanks in advance for any help/advice.

I usually avoid linking to other forums, but in this case, there is a similar discussion over on MacNN forum setting up a Mac Pro to use RAID.
Apple RAID software has continued to improve. The difference in performance between Apple and SoftRAID has narrowed to the point both are excellent. SoftRAID though alerts you on any I/O time out or read/write errors, and use a stripped read which is nice, when or where it is needed.
I've never stopped upgrading and trying to improve on performance. The trick is not everyone can go out and spend $800 for a drive case and controller plus another $500 on disk drives for an external setup, and buy 3-6 drives for the existing SATA ports.
Rather than buying the fastest, I bought some 160GB RE WD drives, cheap, good for RAID, and planned to use those as the base. Then got the 320GB model. Then bought WD RE2 500GB $115 ea , which seems to be a nice price and still does nicely, optimized for writes. That means I can do some mix-and-matching.
Some can take their existing SATA drives to get started. And probably has some drives that can be used for backups and such.
Here is my own shopping list:
Sonnet Tempo E4P:
http://eshop.macsales.com/item/Sonnet%20Technology/TSATAIIE4P/
SeriTek Case: $525
http://eshop.macsales.com/item/Firmtek/SATA5PM/
Or something cheaper,
http://eshop.macsales.com/item/Norco%20Technologies/DS500N/
Dual bay case to use with 2 ODD ports and NewerTech kit:
http://eshop.macsales.com/item/Other%20World%20Computing/MESATATBEK/
http://eshop.macsales.com/item/Newer%20Technology/MPQXES2/
(takes some work to access those two ODD SATA ports, but worth it, always on)
OWC XLR8 Specials, usually have Friday specials:
http://eshop.macsales.com/Specials/XLR8YourMac.cfm
10K Raptor $210 vs WD RE2 750GB $220 if you look under hard drives.

Z97 MPOWER MAX AC RAID Setup Question

Apologies if this is in the wrong place; I wasn't sure if I should stick this here or in the Windows x86/x64 board.
Essentially, what I would like to do is this:
Set up a RAID 1 (disk mirroring) array using the integrated Intel raid controller on my Z97 MPOWER MAX AC motherboard using two 1TB WD Blue drives. After setting up the array in BIOS, I'm wanting to do a clean install of Windows 7 Ultimate (OEM).
My question is this: If I wanted to set up a software recovery partition (like how OEMs ship most systems these days with an OS recovery partition), how would I go about setting up this partition in relation to setting up the RAID array and installing Windows? Is it even possible to do what I'm trying to accomplish, or am I giving the "department of redundancy department" a run for their money?
Many thanks.
EJ

isn't that you will still need the bios to be modified first so it will point to your OS recovery?

Not a normal RAID 1 question

WD=Western Digital
I would like to run this question by a few people and see what they think.
Originally I had a 2008 (non R2) server now upgraded to 2012 and it had two drives - both the same size - one WD and one Hitachi. Both of those drives were in a RAID 1, and had no issues.
Then of course one fails, and I replace it. No more issues for a year or so, then I replace a failed drive again. Now both of the drives that were replaced were the WD, and not the Hitachi. These drives do get a lot of "abuse" since they do a bunch
of data compression and decompression, so yes I would expect it to fail.
Now my question, which is hopefully simple, is the Windows implementation of RAID 1 tied to any one disk per say, and then sycn'd, or is it just dumb luck and coincidence that both of the drives that failed were the WD drives?

OK so here is a really good walkthrough of implementing a RAID 1 -
http://technet.microsoft.com/en-us/magazine/2005.05.raid.aspx Its an older article. But since you can boot to the second drive then that would infer that they are initially sync'd and then both written to at the same time.
So one thing that I will mention here is that you say: These drives do get a lot of "abuse" since they do a bunch of data compression and decompression, so yes I would expect it to fail.
A Hardware RAID card with a cache will actually ease the amount of IO because they have a an "Read Ahead" and Write Back to cache feature. The Adaptive Read ahead will fetch additional blocks of data when data is requested - this will keep the hard drive
heads from working so hard. Write back allows data being written to disk to go to cache first. If you are using caching on the RAID card make sure it has a battery backup. Another note: Certain MS products will disable any caching on the C: drive these include
- Domain Controller, SQL, Exchange or any product that uses the JET database i.e. DHCP

(SOLVED) Two KDE Questions

1. How do you enable spell check in Kopete? It does not seem to want to check my spelling after I click the spell button or right click and select auto spell check. I checked my system and I do have aspell installed.
2. How do I get a volume applet on the panel? I have used Kubuntu in the past and there was always a little speaker in the system tray section. This is not present with the current full KDE package which I have installed. How do I add it?
Thank you so much for your help!
Question 2 has been solved. Just start Kmix
Last edited by czechman86 (2008-05-30 02:36:59)

funkyou wrote:Do you have the appropriate language package for aspell installed? (example: aspell-de for german)
i checked and i did not have the en package. thank you for that tip! the spelling in kopete will still not work however.

[Solved] Metacity theme question

Hi,
I use a modified version of the "Human" theme but it's not perfect yet.
The ugly 'point' on the left should be removed and at this area the application icon should be shown.
What is needed to modify? Thanks for help.
Screenshot:
metacity-theme.xml:
http://pastebin.com/ZVx5My1U
Edit: solved by myself
Last edited by Radioactiveman (2011-03-21 17:56:57)

anonymous_user wrote:
Haptic wrote:What's wrong with asking 2 things in 1 thread?
Arch Wiki wrote:Choose one topic per thread. Long threads are typically discouraged in the technical issue subforums. Try not to post multiple questions in a single topic -- this makes it difficult to search for specific problems.
https://wiki.archlinux.org/index.php/Fo … ow_to_Post
Sorry, I moved the other question to another topic.
Nothing shows up in ncmpcpp
mpd.conf
http://paste.pocoo.org/show/342598/
Last edited by Haptic (2011-02-22 02:49:02)

CalDigit RAID-Card Questions

Hey all,
I'm going to be upgrading my Mac Pro setup soon, as I'm in desperate need of more high-speed hard drive space. The CalDigit RAID-Card seems like a great product, with expandability in mind, as well as some other great features.
I'm planning on doing a RAID 5 setup with all four drives (as the CalDigit RAID-Card allows you to make a RAID set bootable). Now, I've been told time and time again to not make your Scratch Drive the same as the System Drive (advice which I've always followed). However, if all four drives were RAID'ed together via RAID 5, and then, two partitions were made (1.0 GB for the system, and 3.0 GBs for the Scratch Disk), does this solve the inherent risks / performance problems associated with making a Scratch Disk the same as the System Boot Drive?
Does having the System Software on a Bootable Hardware RAID get rid of the risks via RAID'ing via software?
Or, should I just RAID 5 three of the drives, and leave one for the System all by itself? Obviously, with 4 TBs of drive space, I'm trying to maximize that amount of storage I can get internally. Thanks!

I believe their RAID card is a software RAID card, & software RAID is definitely not recommended.
Dear Jon,
When it comes to striped RAID sets, I have not found a single hardware RAID setup that can out perform a Disk Utility software based RAID configuration. When it comes to RAID 5/6 - Intel IOP based hardware RAID cards provide superior performance. In addition, the Intel IOP hardware design usually dictates that all cards with the same processor will provide RAID 6 performance that is similar regardless of the manufacturer.
Saying that software RAID is not recommended really is too little information and untrue in many configurations. Hardware RAIDs carry their own problems. When a hardware RAID card fails the user needs a replacement card that is usually more expensive to obtain, requires additional down time and may not be available at all if the company has ended the life of the product.

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