1
vote
1answer
51 views

Disabling damaged RAID 1 to read from healthy HDD

One of the HDDs in my software RAID 1 on a dedicated server is damaged. The customer support is slow to respond. I would like to transfer all data I need to another server, but file access is ...
1
vote
1answer
434 views

mdadm Stuck at rebuilding spare

I have the following Raid configuration, cat /proc/mdstat Personalities : [raid1] [raid6] [raid5] [raid4] md4 : active (auto-read-only) raid5 sda5[0] sdd5[4] sdc5[2] sdb5[1] 1536 blocks ...
0
votes
0answers
105 views

mdadm array fails to start at boot, bad superblock on component drive

At boot my mdadm raid5 array fails to start, saying that one of my disks (sdi) has a bad superblock. However, once I log in, I can start the array no problem with mdadm --assemble /dev/md0 ...
0
votes
1answer
31 views

mdadm grow operation giving nonstop libata errors

Running Debian 7, mdadm 3.2.5. I issued a command to grow a 5 disk, 3 spare raid 5 array to an 8 disk, 0 spare raid 6 array: mdadm --grow /dev/md0 --level=6 --raid-devices=8 ...
2
votes
2answers
391 views

Remake SW RAID1 from a new HDD and an old HDD with bad blocks

I have a SW RAID1 and I just replaced /dev/sda with a new HDD as the old one failed. Now, upon trying to recreate the RAID array I discovered that the "good" HDD (/dev/sdb) has bad blocks with prevent ...
2
votes
2answers
2k views

Using software-RAID vs “firmware”-RAID (a.k.a. FakeRAID) [closed]

We recently bought a tower server on which I want to install Debian. I thought the device had hardware RAID, as I could see a BIOS screen. As it turns out, it's still a software RAID. When I configure ...
0
votes
3answers
173 views

RAID 5 with two failed devices

I have a software RAID 5 with 6 devices and one of them needs to be rebuilt. Until now, everything is OK. But, while the disk is rebuilt, it was found bad sectors on another disk and is being marked ...
5
votes
1answer
442 views

100% packets dropped on first RX queue on 3/5 raid6 iSCSI NAS devices using intel igb (resolved)

Edit : The issue is resolved. The Queues in question have been used for Flow Control Packets. Why the igb driver propagated FC packets up to have them dropped (and counted) is another question. But ...
1
vote
1answer
157 views

it is good and safe to use debian software raid?

My questions is as simple as the title: it is good and safe to use debian6 software raid? How safe it is? Can i have a software RAID configuration backup? How can i deal/recover with/from a HDD ...
0
votes
1answer
89 views

Linux Software RAID 1 issue

I recently had a HDD failure on a SW RAID1 system (Debian 6.0) and what happened was that the active HDD looked like it had some badblocks which somehow propagated to the HDD that was still OK but it ...
3
votes
4answers
435 views

OS or Onboard software RAID?

I plan on installing Debian 6 on my server build with a E3-1270, 16GB DDR3, and 2x120GB SATA3 SSDs. But this has me wondering, should I use Intel's built-in, on-board software RAID or the OSs'? ...
1
vote
1answer
315 views

Is there a way to prevent a SW RAID 1 from degrading?

I have a number of Debian servers in a datacenter and from time to time I notice that the software RAID 1 was degraded. While the re-sync process starts automatically and I don't lose any data I find ...
1
vote
2answers
157 views

Software RAID 1 issue

I have a SW RAID 1 with 3 partitions and one of them seem not to be able to re-sync after a HDD failure/replacement. Here's some info: more /proc/mdstat Personalities : [raid0] [raid1] [raid6] ...
1
vote
3answers
2k views

Creating a partitioned raid1 array for booting a debian squeeze system

I'd like to have the following raid1 (mirror) setup: /dev/md0 consists of /dev/sda and /dev/sdb I created this raid1 device using mdadm --create --verbose /dev/md0 --auto=yes --level=1 ...
1
vote
1answer
166 views

Warnings about partition tables on /dev/md? during preseed installation. (Debian Lenny)

I'm setting up an environment to install many Lenny machines at once and I need to avoid any dialog with the process, corner cases aside. One thing that consistently troubles me is that after my ...
0
votes
2answers
247 views

rebuilding raid5 array

I inherited a machine that was running Debian with a RAID 5 array. I installed a bunch of updates (1700 or so) that the OS recommended, then after rebooting, the raid array did not mount. The device ...
3
votes
1answer
765 views

Use a RAID Controller without drivers?

Ordered an Adaptec 1420SA RAID card for my Debian Squeeze media server but didn't check to see if it was compatible, turns out it's not because it uses something called hostRAID which requires special ...
1
vote
1answer
388 views

raid1 DegradedArray event

I am new to raid, and set up a software RAID1 with two sata disk a month ago. I didn't check the status, but tested by unplugging one of the drives and verifying the system worked normally. Today, I ...
3
votes
5answers
3k views

Linux Software Raid runs checkarray on the First Sunday of the Month? Why?

It looks like Debian has a default to run checkarray on the first Sunday of the month. This causes massive performance problems and heavy disk usage for 12 hours on my 2TB mirror. Doing this "just ...
8
votes
5answers
3k views

Boot Debian while RAID array is degraded

Recently, I came across Ubuntu Server install. During install, it asked me whether or not to allow booting system from degraded RAID array (probably because I installed system onto RAID1 /dev/md0 ...
5
votes
2answers
1k views

RAID Read/Write Speed Gradually Slows

This is actually a server at home, but I felt it was sufficiently complicated as to not have it on SuperUser and could easily apply to a professional situation. I have a file server running Debian ...
5
votes
3answers
2k views

Linux software RAID 10 implementation

I don't want to force anybody to make it on behalf of me but trust me: i've looked hundreds of sites and i can't find a good starting point for this. I have 4x500Gb HDD's which i want to set up in ...
4
votes
5answers
553 views

Do I need to stop services (Apache, MySQL) during software RAID 1 reconstruction on Linux?

Do I need to stop or limit services (Apache, MySQL, ...) during software RAID 1 reconstruction on Linux ? Is there a risk of corrupting or losing data ? I am using Linux MD devices (with mdadm) on ...