similar to: SATA Raid 5 and losing a drive

From looking at mdstat it appears I have a RAID partition missing. There are NO errors in /var/log/messages about disk errors or anything. What happened to my sda1??? I had a power outage last week. Any ideas??? Jerry more /proc/mdstat Personalities : [raid1] md1 : active raid1 sdb3[1] sda3[0] 236717696 blocks [2/2] [UU] md0 : active raid1 sdb1[1] 51199040 blocks [2/1] [_U]

Hi I have a Raid 1 centos 4.4 setup and now have this /proc/mdstat output: [root at server admin]# cat /proc/mdstat Personalities : [raid1] md2 : active raid1 hdc2[1] hda2[0] 1052160 blocks [2/2] [UU] md1 : active raid1 hda3[0] 77023552 blocks [2/1] [U_] md0 : active raid1 hdc1[1] hda1[0] 104320 blocks [2/2] [UU] What happens with md1 ? My dmesg output is: [root at

Hi, I hope someone can help. Just started to play with software RAID on Centos 3.5 and was trying to simulate a faulty drive by using the -f switch on mdadm to mark the partition (drive) as faulty and I then I removed and readded the drive, which quit happily rebuilt according the /proc/mdstat and the output from the --detail switch of mdadm. After all this mucking around I shutdown the

On Mon, 2020-11-16 at 18:06 -0500, H wrote: > On 11/16/2020 01:23 PM, Jonathan Billings wrote: > > On Sun, Nov 15, 2020 at 07:49:09PM -0500, H wrote: > > > I have been having some problems with hardware RAID 1 on the > > > motherboard that I am running CentOS 7 on. After a BIOS upgrade of > > > the system, I lost the RAID 1 setup and was no longer able to boot

dmesg is not reporting any issues. The /proc/mdstat looks fine. md0 : active raid1 sdb1[1] sda1[0] X blocks [2/2] [UU] however /var/log/messages says: smartd[3392] Device /dev/sda 20 offline uncorrectable sectors The machine is running fine.. raid array looks good - what is up with smartd? THanks, Jerry

Is there a reason why after a software raid install (from kickstart) that md1 is always unclean. md0 seems fine. boot screen says md1 is dirty and cat /proc/mdstat show md1 as being rebuilt. Any ideas? Jerry --------------- my kickstart -------------- echo "bootloader --location=mbr --driveorder=$HD1SHORT --append=\"rhgb quiet\" " >

I have configured 2x 500G sata HDD as Software RAID1 with three partitions md0,md1 and md2 with md2 as 400+ gigs Now it is almost 36 hours the status is cat /proc/mdstat Personalities : [raid1] md0 : active raid1 hdb1[1] hda1[0] 104320 blocks [2/2] [UU] resync=DELAYED md1 : active raid1 hdb2[1] hda2[0] 4096448 blocks [2/2] [UU] resync=DELAYED md2 : active raid1

Hi, I have a RAID 1 (using mdadm) on CentOS Linux and in /proc/mdstat I see this: md7 : active raid1 sda2[0] sdb2[1] 26627648 blocks [2/2] [UU] [-->> it's OK] md1 : active raid1 sdb3[1] sda3[0] 4192896 blocks [2/2] [UU] [-->> it's OK] md2 : active raid1 sda5[0] sdb5[1] 4192832 blocks [2/2] [UU] [-->> it's OK] md3 : active raid1 sdb6[1] sda6[0] 4192832 blocks [2/2]

Hi, I have a system with two IDE controllers running RAID1. As a test I powered down, removed one drive (hdc), and powered back up. System came up fine, so powered down installed a new drive (hdc) And powered back up. /proc/mdstat indicatd RAID1 active with hda only. I thought it would Auto add the new hdc drive... Also when I removed the new drive and added The original hdc, the swap partitions

--On Friday, September 18, 2020 10:53 PM +0200 Simon Matter <simon.matter at invoca.ch> wrote: > mdadm --remove /dev/md127 /dev/sdf1 > > and then the same with --add should hotremove and add dev device again. > > If it rebuilds fine it may again work for a long time. This worked like a charm. When I added it back, it told me it was "re-adding" the drive, so it

Somewhere, mdadm is cacheing information. Here is my /etc/mdadm.conf file: more /etc/mdadm.conf # mdadm.conf written out by anaconda DEVICE partitions MAILADDR root ARRAY /dev/md0 level=raid1 num-devices=4 metadata=0.90 UUID=55ff58b2:0abb5bad:42911890:5950dfce ARRAY /dev/md1 level=raid1 num-devices=2 metadata=0.90 UUID=315eaf5c:776c85bd:5fa8189c:68a99382 ARRAY /dev/md2 level=raid1 num-devices=2

How can I tell wich HDD to swap, when the "cat /proc/mdstat" says one HDD of the RAID1 array has died? Does the HDD's has some serial numbers, that I can see in "reality", and I can get that number from e.g.: a commands output? How could I know wich HDD to swap in e.g.: a RAID1 array? thank you -------------- next part -------------- An HTML attachment

I got the email that a drive in my 4-drive RAID10 setup failed. What are my options? Drives are WD1000FYPS (Western Digital 1 TB 3.5" SATA). mdadm.conf: # mdadm.conf written out by anaconda MAILADDR root AUTO +imsm +1.x -all ARRAY /dev/md/root level=raid10 num-devices=4 UUID=942f512e:2db8dc6c:71667abc:daf408c3 /proc/mdstat: Personalities : [raid10] md127 : active raid10 sdf1[2](F)

the main advantage I know of for bios fake-raid is that the bios can boot off either of the two mirrored boot devices. usually if the sata0 device has failed, the BIOS isn't smart enough to boot from sata1 the only other reason is if you're running MS Windows desktop which can't do mirroring on its own On Mon, Nov 16, 2020 at 10:23 AM Jonathan Billings <billings at

Hello all, I have 2 x 250GB sata disks (sda and sdb). # fdisk -l /dev/sda Disk /dev/sda: 250.0 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 14939 119997486 fd Linux raid autodetect /dev/sda2 14940 29878

On 11/16/2020 01:23 PM, Jonathan Billings wrote: > On Sun, Nov 15, 2020 at 07:49:09PM -0500, H wrote: >> I have been having some problems with hardware RAID 1 on the >> motherboard that I am running CentOS 7 on. After a BIOS upgrade of >> the system, I lost the RAID 1 setup and was no longer able to boot >> the system. > The Intel RST RAID (aka Intel Matrix RAID) is

Hi List, What this means? md: syncing RAID array md0 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction. md: using 128k window, over a total of 2096384 blocks. md: md0: sync done. RAID1 conf printout: --- wd:2 rd:2 disk 0, wo:0, o:1, dev:sda2 disk 1, wo:0, o:1, dev:sdb2 sd 0:0:0:0:

> I got the email that a drive in my 4-drive RAID10 setup failed. What are > my > options? > > Drives are WD1000FYPS (Western Digital 1 TB 3.5" SATA). > > mdadm.conf: > > # mdadm.conf written out by anaconda > MAILADDR root > AUTO +imsm +1.x -all > ARRAY /dev/md/root level=raid10 num-devices=4 > UUID=942f512e:2db8dc6c:71667abc:daf408c3 > >

On Sun, Nov 15, 2020 at 07:49:09PM -0500, H wrote: > > I have been having some problems with hardware RAID 1 on the > motherboard that I am running CentOS 7 on. After a BIOS upgrade of > the system, I lost the RAID 1 setup and was no longer able to boot > the system. The Intel RST RAID (aka Intel Matrix RAID) is also known as a fakeraid. It isn't a hardware RAID, but instead

> On Nov 17, 2020, at 1:07 AM, hw <hw at gc-24.de> wrote: > > On Mon, 2020-11-16 at 18:06 -0500, H wrote: >> On 11/16/2020 01:23 PM, Jonathan Billings wrote: >>> On Sun, Nov 15, 2020 at 07:49:09PM -0500, H wrote: >>>> I have been having some problems with hardware RAID 1 on the >>>> motherboard that I am running CentOS 7 on. After a BIOS