Questa è la situazione: Nov 22, 2019 · Hi, I have a RAID 5 with 4 disks that has run smoothly for 5 years. Md127 is a 3. From what I have gathered, the parent container is /dev/md127 or /dev/md/imsm0 (linked to each other), but attempts to re-add the device to the parent container also fail. I Dec 31, 2011 · Yesterday I shut down my PC normally, but when I started it up today the boot failed. 10 with a 3 disk software RAID 5 configuration, with 3TB hard drives, in e mdadm --examine /dev/md127 mdadm: No md superblock detected on /dev/md127. Sep 22, 2009 · # mdadm --examine /dev/sda1 /dev/sda1: Magic : a92b4efc Version : 1. 26 GB) Array Size : 5860147200 Mar 7, 2017 · Before all you must understand how it works. Questa è la situazione: You should try stopping and re-starting the array: mdadm --stop /dev/md0 mdadm --assemble --scan to re-assemble the array and if that doesn't work, you may need to update your mdadm. mdadm --misc --detail /dev/md0 mdadm: cannot open /dev/md0: No such file or directory May 31, 2014 · 1. mdadm -A --force /dev/md2 /dev/sd[acde]4. Sometimes /dev/md0 does not exists at all. 3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0001f015 Device Boot Start End Blocks Id Dec 22, 2009 · I've tried "mdadm --add /dev/md/imsm /dev/sdc", but this just seems to create a *new* imsm container. Can someone help on this matter? partitioning Jun 15, 2022 · mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sda1 /dev/sdb1 mdadm: Note: this array has metadata at the start and may not be suitable as a boot device. My /etc/mdadm/mdadm. As usual, don't forget to update your initramfs: update-initramfs -u Oct 19, 2022 · /dev/sda: Magic : a92b4efc Version : 1. conf file and fstab worked like a charm. For whatever reason the raid array would get deleted on reboot until i did this. 98GiB raid0 2 devices, 0 spares. – Oct 2, 2019 · mdadm --detail --scan /dev/md127 >> /etc/mdadm/mdadm. Jan 24, 2024 · Posted: Wed Dec 14, 2011 7:28 pm Post subject: mdadm: cannot get array info for /dev/md Salve gente, mi trovo da live cd, ed ho bisogno di liberare sda1 dal RAID. x metadata, or use --metadata=0. If udev is setup properly there should be a device named /dev/md/ip-10-0-1-21:0, that is what you should be using in your /etc/fstab for newer style arrays. Mar 6, 2019 · When I run mdadm --assemble --scan I get the following output: mdadm: /dev/md127 assembled from 7 drives - not enough to start the array while not clean - consider --force. Jan 21, 2017 · At this point, try manually stopping and restarting the array. 92 GB) Data For example: mdadm /dev/md0 -f /dev/hda1 -r /dev/hda1 -a /dev/hda1 will firstly mark /dev/hda1 as faulty in /dev/md0 and will then remove it from the array and finally add it back in as a spare. 2. alternatively, specify devices to scan, using # wildcards if desired. I ran fsck /dev/sdb -y which wrote many many times on the disk. 1 Ubuntu HP EliteBook 8570w laptop the following message is displayed a number of times when I boot it without an external disk (two partitions, data not system) plugged in: mdadm: No ar Feb 3, 2015 · Subject: Re: mdadm: Cannot get exclusive access to /dev/md127; From: Rick Stevens <ricks@xxxxxxxxxxxxxx>; Date: Tue, 3 Feb 2015 10:17:19 -0800; Delivered-to: users@xxxxxxxxxxxxxxxxxxxxxxx Sep 2, 2018 · sudo mdadm --examine /dev/sdd /dev/sdd: Magic : a92b4efc Version : 1. 39 GiB 3000. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Why does it keep saying it's busy. No Space left on device". Dec 23, 2023 · mdadm --stop /dev/md127 mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? At this stage, I noticed that /proc/mdproc was actually in the process of recovering my raid. conf might be possibly replaced by something like for example /dev/disk/by-label/DATA. This should add a line like the following to the end of mdadm. 6 - 25th October 2012 # ~/mdadm-3. Exclusive for LQ members, get up to 45% off per month. Jul 15, 2014 · When I try to stop the array this is what I get: mdadm: Cannot get exclusive access to /dev/md2:Perhaps a running process, mounted filesystem or active volume group? It gave me trouble to unmount the (empty, unused) file system but was able to use umount -l. I then tried to add the new drive to the pool, ended up with this - mdadm --manage /dev/md0 --add /dev/sdc1 mdadm: cannot get array info for /dev/md0 I then tried to check the status of the raid - Jul 7, 2012 · I fixed my md127 issue like this: Stop the array if not stopped already: mdadm --stop /dev/md127 Reassemble the array on md0: mdadm -A /dev/md0 /dev/sd[abcd] Get the UUID from the mdadm --detail /dev/md0 command and use it to edit the mdadm. If the RAID setups are using RAID1, the “Personalities” line in /proc/mdstat should include it as “[raid1]” Try to run the device with “mdadm –run” Oct 10, 2023 · root@pop-os:~# mdadm -AsfR && vgchange -ay mdadm: Found some drive for an array that is already active: /dev/md/diskstation:3 mdadm: giving up. 20 GB) Array Size : 10744359296 (10246. # alternatively, specify devices to scan, using wildcards Jan 20, 2023 · @NikitaKipriyanov - avoid chastising people for not being "attentive" when the directions you initially provided are incorrect. mdadm: /dev/sdb is identified as a member of /dev/md/imsm0, slot -1. You may need to use -r option first to remove the problematic disk partition before re-adding I also have this same problem I created a raid md0 and placed that in my /etc/fstab and end up seeing a raid md127 so modifying the /etc/fstab to add md127 and that work but then the one I created md0 returns and I have to change the /etc/fstab again I read that when there is a problem raid creates that md127 but I haven't figured where in the configuration of raid this issues is generated The raid was never used and has no \ data. 90 UUID=a44a52e4:0211e47f:f15bce44:817d167c Oct 20, 2022 · When this happens, the array will re-sync the data to the spare drive to repair the array to full health. Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use. 67 GiB 6000. A few days ago one of the disks failed. 4T raid4 array, and when i run mdadm --grow /dev/md127 --size=3T it says "mdadm: Cannot set device size for /dev/md127. 78 GiB 2000. 11:0 Creation Time : Tue Dec 20 17:49:08 2016 Raid Level : raid10 Raid Devices : 6 Avail Dev Size : 5860270080 (2794. conf(5) for information about this file. It's not doing anything, it can't, it's not even What a case! A long story short one of our disks got a bad disk in a software RAID1 setup and when we tried replacing the disk in a recovery Linux console we got the strange error of an MD device: mdadm: Cannot get array info for /dev/md125. But I've not tried this yet: The examples in the manual page of mdadm. Resync The following properties apply to a resync: [1] Mar 4, 2019 · If failed, you can try to assemble them by yourself using 'mdadm -A /dev/md0 /dev/XXX /dev/YYY'. conf: ARRAY /dev/md0 level=raid5 num-devices=3 metadata=00. # mdadm -Q /dev/md0. In your case it doesn’t, and the reason isn’t entirely obvious: if constituent devices are themselves read-only, the RAID array is read-only (which is what matches the behaviour you’re seeing, and the code-paths used when you try to re-enable read-write). If the metadata version is 1. The raid reference has changed; mdadm -D /dev/md127 Do not shutdown or reboot until this is fully functional!! I have 10 HDDS currently in my system 9 raid and one to replace failed disk. You generally should Feb 28, 2024 · So I will leave it like it is. mdadm: /dev/sde1 is identified as a member of /dev livecd ~ # mdadm --add /dev/md125 /dev/sda3 mdadm: Cannot get array info for /dev/md125 In general, to recover a RAID in inactive state: Check if the kernel modules are loaded. 298333] md/raid:md127: device dm-8 operational as raid disk 1 [86802. To add a spare, pass in the array and the new device to the mdadm --add command: from /proc/mdstat. In a RAID array, data is stored across multiple physical storage devices, and those devices are combined into a single virtual storage device. 04. 6/mdadm /dev/md127 --remove /dev/sdg mdadm: hot remove failed for /dev/sdg: Device or resource busy I can see how the initial report might be similar to the You need to stop a particular participant in that array. Apr 25, 2019 · Admittedly I'm not too familiar with MDADM. 75 GB) Used Dev Size : 5859211264 (2793. Output: # mdadm -Ss mdadm: stopped /dev/md126 mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? mdadm: Cannot get Dec 18, 2009 · mdadm: looking for devices for further assembly md: md127 stopped. 59 GiB 16002. Make sure that /dev/md0 really is the live copy of your data. Posted: Wed Dec 14, 2011 7:28 pm Post subject: mdadm: cannot get array info for /dev/md Salve gente, mi trovo da live cd, ed ho bisogno di liberare sda1 dal RAID. 2). ~$ mdadm --version mdadm - v3. conf. Aug 16, 2016 · initialize each storage volume and create a partition on it, so if your drives are /dev/sda /dev/sdb /dev/sdc create partitions so you can make your raid array using /dev/sda1 /dev/sdb1 /dev/sdc1. 22 GB) Raid Devices : 12 Total Devices : 12 Preferred Minor : 0 Update # ~/mdadm/mdadm /dev/md127 --remove /dev/sdg mdadm: hot remove failed for /dev/sdg: Device or resource busy # ~/mdadm-3. Try: mdadm --fail /dev/md0 /dev/sda1 mdadm --remove /dev/md0 /dev/sda1 This is a good resource: Feb 2, 2015 · mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? but the filesystem is still mounted. For some reason I'm unable Jul 14, 2020 · sudo mdadm --manage /dev/md127 --re-add /dev/sdl mdadm: Cannot get array info for /dev/md127 Oct 21, 2018 · A bit confusing but if it works. Then create partition as needed, and add new disk to the array; mdadm --manage /dev/md127 --add /dev/sdc1 Then check /proc/mdadm for the sync of the device Aug 12, 2021 · mdadm /dev/md126 --re-add /dev/sdb mdadm: Cannot add disks to a 'member' array, perform this operation on the parent container. The devices part of this raid are logical volumes and work fine. 2 Feature Map : 0x1 Array UUID : b8ecad1a:56e6c31c:35bb6532:3dd2f9c7 Name : ncloud:vo1 (local to host ncloud) Creation Time : Wed Dec 9 13:01:02 2020 Raid Level : raid5 Raid Devices : 4 Avail Dev Size : 3906764976 (1862. rich@xxxxxxxxx>; Date: Wed, 4 Feb 2015 15:46:50 -0800; Delivered-to: users@xxxxxxxxxxxxxxxxxxxxxxx Dec 16, 2017 · mdadm --zero-superblock device Takes the device argument as the disk(s), not the array. 51 GiB 1000. Apr 26, 2017 · I would therefore like /dev/md0 to use the last 1 TB, too. 2 Feature Map : 0x0 Array UUID : 3e82e98a:7050682c:c641e233:714b5b69 Name : omv:storage Creation Time : Mon Sep 26 20:08:00 2016 Raid Level : raid5 Raid Devices : 3 Avail Dev Size : 1953263024 (931. Questa è la situazione: sudo mdadm --manage /dev/md127 --re-add /dev/sdl mdadm: Cannot get array info for /dev/md127 Posted: Wed Dec 14, 2011 7:28 pm Post subject: mdadm: cannot get array info for /dev/md Salve gente, mi trovo da live cd, ed ho bisogno di liberare sda1 dal RAID. I recently set up an array for a NAS, but incorrectly sized the partitions in my setup script, and need to remove the array, re-partition the disks, and Apr 12, 2023 · [86802. 07 GB) Array Size : 1953262592 (1862. 42. Questa è la situazione: At this point, your best option is probably to destroy the /dev/md127 array and re-add /dev/sdb1 to /dev/md0. /dev/md0 and /dev/md1 show up in /proc/mdstat and /proc/partition again. May 3, 2015 · root@maples-server:~# cat /etc/mdadm/mdadm. 2 UUID=XXXXXXXX:XXXXXXXX:XXXXXXXX:XXXXXXXX. 90. After that, you can use 'mdadm -E -s > /etc/mdadm. 89 GiB 2999. 298858] md/raid:md127: raid level 6 active with 4 out of 4 A redundant array of independent disks (RAID) is a set of vendor-independent specifications that support redundancy and fault tolerance for configurations on multiple-device storage systems. Spares cannot be added to non-redundant arrays (RAID 0) because the array will not survive the failure of a drive. com Dec 15, 2023 · Upon further inspection the new drive I added was made the spare disk, but the old spare disk was kicked out of the array? and also I can't mount it anymore as mdadm: Cannot get array info for /dev/md127 Oct 24, 2016 · No big deal, I figured, I'll do this with mdadm. I tried to assemble the array. mdadm: cannot open device /dev/sdb5: Device or resource busy mdadm: /dev Oct 20, 2018 · Welcome to LinuxQuestions. I have a RAID5 array (/dev/md127)mounted as /data in /etc/fstab, and on boot it waits 1m30s for the service mounting /data to complete, then fails and drops me in an emergency shell. 3 x86_64 running under VirtualBox. Supplemental information by OP: As described above the update-initramfs -u did indeed seem to be crucial! However, there turned out to a bit more tweaking possible, which I'll edit in here rather Jul 16, 2011 · shrkw@frutiger:~$ sudo mdadm --misc--stop /dev/md127 mdadm: stopped /dev/md127 shrkw@frutiger:~$ sudo mdadm --assemble--scan /dev/md0 mdadm: /dev/md0 has been started with 2 drives. If you plan to store '/boot' on this device please ensure that your boot-loader understands md/v1. 07 GB) Array Size : 1953260544 (1862. Stop the array – this will free up the disks from being ‘resource busy’. So I went into MDADM and tried to stop the array and got this back: mdadm: Cannot get exclusive access to /dev/md1:Perhaps a running process, mounted filesystem or active volume group? So I decided to boot Linux into single user mode as it seems like a lot of people have run into similar issues. Use mdadm --detail for more detail. The partition tables all look the same, May 14, 2012 · Now, you should be able to run mdadm -A /dev/md127 If this all still fails, there's one last hope for the easy recovery. Also I did something that might have get the things worse. So from here I'm stumped Sep 14, 2021 · It seems that /dev/md127 is already formatted: # mkfs /dev/md127 mke2fs 1. At that point the array was up, running with 4 of the 5 devices, and I was able to add the replacement device and it's rebuilding. This device is created for each array when they are running. 89 GiB 2000. 2 (28-Feb-2021) /dev/md127 contains a ext4 file system last mounted on /data on Mon Sep 13 22:35:53 2021 Proceed anyway? (y,N) What is happening here? Why is there is a mention in the first line in syslog of a md0 device, instead of md127? How do I fix it? I was able to resolve this by stopping the array and then re-assembling it: mdadm --stop /dev/md2. Aug 2, 2019 · ARRAY /dev/md1 UUID=8fe790ca:f3fa3388:4ae125b6:2c3a5d44 ARRAY /dev/md2 UUID=f14bef5b:a5356e51:25fde128:09983091 ARRAY /dev/md3 UUID=0639c68d:4c844bb1:5c02b33e:00ab4a93 This is also consistent (but also depends on it to have been created this way and/or set accordingly in the metadata, otherwise you also might have to --update it). 298358] md/raid:md127: device dm-7 operational as raid disk 0 [86802. Partitions work over whole disk sda, software RAID works over partitions and next as in diagram: Disk sda -> partition sda4 -> software RAID md0 -> LVM physical volume -> LVM volume group vg0 -> LVM logical volume -> filesystem -> system mount point. 40 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Posted: Wed Dec 14, 2011 7:28 pm Post subject: mdadm: cannot get array info for /dev/md Salve gente, mi trovo da live cd, ed ho bisogno di liberare sda1 dal RAID. 26 GB) Array Size : 5860147200 (5588. /dev/XXX /dev/YYY are the drive that original /dev/md0 using. mdadm: added /dev/sdb Posted: Wed Dec 14, 2011 7:28 pm Post subject: mdadm: cannot get array info for /dev/md Salve gente, mi trovo da live cd, ed ho bisogno di liberare sda1 dal RAID. conf file so it will point to /dev/md127. 90 GiB 4000. mdadm: no RAID superblock on /dev/sdc mdadm: /dev/sdc has wrong uuid. Run the following command to add a reference to your array config at the end of the file: mdadm --detail --scan >> /etc/mdadm/mdadm. Questa è la situazione: Nov 30, 2010 · FileServer:~# mdadm /dev/md2 -r /dev/sde1 -a /dev/sde1 mdadm: cannot get array info for /dev/md2 FileServer:~# mdadm /dev/md2 -a /dev/sdd1 mdadm: cannot get array info for /dev/md2 FileServer:~# mdadm --examine /dev/sdc1 /dev/sdc1: Magic : a92b4efc Version : 00. mdadm: /dev/sdd1 is identified as a member of /dev/md0, slot 4. However, only one md array can be affected by a single command. > sudo mdadm /dev/md_d0 --add /dev/sdc1. mdadm: /dev/sda is identified as a member of /dev/md/imsm0, slot -1. mdadm: /dev/sdf is identified as a member of /dev/md/0, slot 2. 62 GiB 11002. mdadm --remove /dev/md2 /dev/sda3 mdadm: cannot get array info for /dev/md2 UPDATE 4: Notice it was automatically mounted under /dev/md127 for me. これでmd0で扱えるようになった。 けど、再起動するとやっぱりmd127に戻ってしまう 。 However, # mdadm --stop /dev/md0 informs me thusly: mdadm: Cannot stop container /dev/md0: member md127 still active So from there I tried # mdadm --stop /dev/md127, but that lead to a message stating that mdadm: Cannot get exclusive access to /dev/md127: possibly it is still in use. I checked the physical volume in lvm and there it uses /dev/md127. mdadm -A /dev Posted: Wed Dec 14, 2011 7:28 pm Post subject: mdadm: cannot get array info for /dev/md Salve gente, mi trovo da live cd, ed ho bisogno di liberare sda1 dal RAID. May 30, 2018 · TL;DR I need to read and write from / to 2 of my mdadm RAID1 arrays after unplugging one of the drives in both cases and commenting them out of /etc/mdadm/mdadm. conf use device names like /dev/md*. The mdadm raid refuses to acknowledge / see that LVM is now using less space, and complains that it can't shrink the array past the already allocated space: mdadm: Cannot set device size for /dev/md127: No space left on device May 8, 2015 · Then doing mdadm -S /dev/md126 and mdadm -S /dev/md127, and the other devices i. Now I get… Sep 8, 2017 · Now that the reshape and recovery is done, I cannot access my /dev/md0 (it does not mount), resize2fs /dev/md0 tells to run e2fsck first, and e2fsck tells: The filesystem size (according to the superblock) is 732473472 blocks The physical size of the device is 488315648 blocks Either the superblock or the partition table is likely to be corrupt! Nov 29, 2022 · On a 22. root@regDesktopHome:~# e2fsck /dev/md1 e2fsck 1. Stop all RAID devices # mdadm -Ss Actual results: Volume is stopped, but container not. 298276] md/raid:md127: device dm-10 operational as raid disk 3 [86802. 90 Continue creating array? y mdadm: Defaulting to Nov 7, 2012 · Hi, The system is Oracle Linux 6. mdadm: looking for devices for /dev/md0 mdadm: no RAID superblock on /dev/sde mdadm: /dev/sde has wrong uuid. conf + updating initramfs, of cours Apr 28, 2022 · Trying to assemble the array manually: # mdadm --verbose --assemble /dev/md128 /dev/sdc1 /dev/sdd1 mdadm: looking for devices for /dev/md128 mdadm: no recogniseable superblock on /dev/sdc1 mdadm: /dev/sdc1 has no superblock - assembly aborted # mdadm -E /dev/sdc1 mdadm: No md superblock detected on /dev/sdc1. I removed the damaged disk and put a new one started to recreate the RAID (mdadm --add /dev/md127 /dev/sdb) but it failed at about 20%. Now I've bought the second disk and tried running this command: mdadm --add /dev/md0 /dev/sdb1 But I'm getting this error: mdadm: /dev/sdb1 not large enough to join array Apr 2, 2016 · Here is where I ran into difficulty. conf # # Please refer to mdadm. # # by default (built-in), scan all partitions (/proc/partitions) and all # containers for MD superblocks. mdadm: No arrays found in config file or automatically root@pop-os:~# cat /proc/mdstat Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md127 : active raid1 sdb3[0 mdadm -a /dev/md127 /dev/sdc1 Use mdadm -D /dev/mddevice to get more information about the array. conf file: ARRAY /dev/md0 UUID=9b2f9d1b:da9a4665:67bbc40f:fdaf6034 erwin@erwin-ubuntu:~$ sudo mdadm --examine /dev/sd*1 /dev/sda1: Magic : a92b4efc Version : 0. conf' to create the raid metadata file, system will use the info base on this file to assemble Raid Volumes during reboot. Aug 23, 2021 · root@ncloud:~# mdadm --examine /dev/sd[abcd] /dev/sda: Magic : a92b4efc Version : 1. This is because it happens before your root file system is mounted (obviously: you have to have a working RAID device to access it), so this file is being read from the initramfs image containing the so-called pre-boot environment. . mdadm --stop /dev/mdN mdadm --assemble --scan If all of this works without obvious errors (check the kernel dmesg for I/O errors, etc. 77 GiB 2000. mdadm --stop /dev/md127 (and others if those where created using your disks) mdadm -A /dev/md127 /dev/sda1 /dev/sdb1 or, if one of the disks is broken or something, you can bring the array up in degraded mode. 3 UEK boot CD. In order to remove the Linux RAID root volume I have started the system using the OL 6. Questa è la situazione: In the meantime, I've figured out that my superblocks seem to be damaged (PS I have confirmed with tune2fs and fdisk that I'm dealing with an ext3 partition):. Feb 16, 2017 · Now, when I try to stop and destroy the /dev/md127 array I get in return: /# mdadm --stop /dev/md127 mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? lsof doesn't list any files as being still open on either /dev/md127 or /mnt/storage1 mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? SOLUTION is simple: check if there are any users logged in who are still in a directory on that drive. vim /etc/mdadm/mdadm. mdadm: cannot open device /dev/sdd: Device or resource busy mdadm: /dev/sdd has wrong uuid. Questa è la situazione: Oct 30, 2012 · Stack Exchange Network. 2 Creation Time : Tue Sep 27 08:32:32 2011 Raid Level : raid1 Array Size : 1953513424 (1863. 61 GB) Used Dev Size : 3906887168 (3725. My goal is to recreate imsm raid1 array from 2 new disks after 1 of the original 2 disks failed. 2 Creation Time : Wed Jun 6 17:31:25 2018 Raid Level : raid5 Array Size : 15627548672 (14903. If I try forcing it higher: # mdadm --grow /dev/md0 --size=2147483648 mdadm: Cannot set device size for /dev/md0: No space left on device Dec 22, 2012 · Can't get any details about Array. mdadm: /dev/sdc1 not large enough to join array. OR # mdadm --query /dev/md0. I was able to resolve this by stopping the array and then re-assembling it: mdadm --stop /dev/md2. I will make a note and, if needed, I will replace the content of /etc/mdadm/mdadm. 00 UUID : 7964c122:1ec1e9ff:efb010e8:fc8e0ce0 (local to host erwin-ubuntu) Creation Time : Sun Oct 10 11:54:54 2010 Raid Level : raid5 Used Dev Size : 976759936 (931. 9 (4-Feb-2014) The filesystem size (according to the superblock) is 59585077 blocks The physical size of the device is 59585056 blocks Either the superblock or the partition table is May 19, 2015 · mdadm: /dev/md0 assembled from 2 drives and 1 spare - not enough to start the array. # mdadm -E /dev/sdd1 mdadm: No md Oct 7, 2017 · mdadm: looking for devices for /dev/md0 mdadm: /dev/sda1 is identified as a member of /dev/md0, slot 0. 46 GB) Array Size : 8788816896 (8381. I have tried: # mdadm --grow /dev/md0 --size=max mdadm: component size of /dev/md0 has been set to 2147479552K But as you can see it only sees the 2TB. conf shows: # mdadm. When I try to stop raid I get the following: # mdadm --stop /dev/md127 mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? Googling about this there are a number of folks hitting this problem over a number of fedora releases. 2 Feature Map : 0x1 Array UUID : e25ff5c6:90186486:4f001b87:27056b4a Name : SAN1:0 (local to host SAN1) Creation Time : Sat Jul 16 17:13:01 2022 Raid Level : raid5 Raid Devices : 3 Avail Dev Size : 1953263024 (931. Now, stop the array: mdadm --stop /dev/md127 mdadm --remove /dev/md127 And assemble it again using the new name. The /dev/md127 entry is just providing a name for older tools and methods to also be able to use the array. Once converted to RAID 4, i am still unable to shrink/"grow" the array. May 8, 2011 · The first line shows the metadata version used by this array. $ sudo mdadm --assemble --verbose /dev/md0 /dev/loop0 /dev/loop1 mdadm: looking for devices for /dev/md0 mdadm: Cannot assemble mbr metadata on /dev/loop0 mdadm: /dev/loop0 has no superblock - assembly aborted May 19, 2019 · mdadm --grow /dev/md127 --size=25769803776 And this is where I get stuck. 298309] md/raid:md127: device dm-9 operational as raid disk 2 [86802. Bit daft given they arent actually running, but anyway: mdadm --stop /dev/md127. Next, run a forced assemble (be sure to get the disks right!): root@rescue:~# fdisk -l Disk /dev/sdb: 1500. I configured it this way to be able to add another disk when I have a chance. /dev/md0 is apparently in use by the system; will not make a filesystem here! I also tried mdadm --stop to stop it, but it didn't work: mdadm: Cannot get exclusive access to /dev/md0:Perhaps a running process, mounted filesystem or active volume group? FYI, /dev/md0 is not mounted, and the output of lsof/fuser is just empty. 67 GiB 8999. conf, edit the appended line to look like this: ARRAY /dev/md0 metadata=1. e. conf # mdadm. Inspect the output of mount to verify that it's mounted on /media/nas, and run ls /media/nas to make sure your data is there. 3 box, one disk failed, and was marked as such in the array, but is not allowing me to remove it: # mdadm /dev/md127 --fail /dev/sdg mdadm: set /dev/sdg faulty in /dev/md127 # mdadm /dev/md127 --remove /dev/sdg mdadm: hot remove failed for /dev/sdg: Device or resource See full list on ahelpme. Ok then: Apr 25, 2019 · Admittedly I'm not too familiar with MDADM. It can be verified with: mdadm --detail /dev/mdxxx Oct 2, 2019 · mdadm --detail --scan /dev/md127 >> /etc/mdadm/mdadm. Reboot Jan 2, 2024 · The -Q or --query flags of mdadm command examine a device to check if it is an md device or a component of an md array. org, a friendly and active Linux Community. 79 GB) Used Dev Size Aug 5, 2023 · One may try to assemble and start the array with mdadm --assemble --force md127 /dev/sdb1 /dev/sdc1 /dev/sdd1. You should try stopping and re-starting the array: mdadm --stop /dev/md0 mdadm --assemble --scan to re-assemble the array and if that doesn't work, you may need to update your mdadm. Jun 14, 2024 · I've tried to stop the main array but I'm a bit concerned: [root@g1016637 ~]# mdadm --stop /dev/md127 mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? I tried unmounting my array and getting this: [root@g1016637 ~]# umount /dev/md127 umount: /mnt/library: target is busy. Click here for more info. mdadm --readwrite /dev/md0 should return it to normal. mdadm: /dev/sdb1 is identified as a member of /dev/md0, slot 1. <br><br>When I try to stop raid I get the following:<br><br># mdadm --stop \ /dev/md127<br>mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running \ process, mounted filesystem or active volume group Aug 3, 2022 · $ ls /dev/md* /dev/md126 /dev/md127 /dev/md: testvol $ /sbin/mdadm --remove /dev/md126 detached $ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT nvme0n1 259:0 0 11G 0 disk └─md126 9:126 0 11G 0 raid1 nvme1n1 259:1 0 11G 0 disk └─md126 9:126 0 11G 0 raid1 Aug 24, 2017 · What's the difference between /dev/md127 and /dev/md127p1? /dev/md127 is the name of array /dev/md127p1 is the name of the partition on the array. update-initramfs -u. The reason is two-fold: Your (new)mdadm. So from here I'm stumped Aug 3, 2022 · $ ls /dev/md* /dev/md126 /dev/md127 /dev/md: testvol $ /sbin/mdadm --remove /dev/md126 detached $ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT nvme0n1 259:0 0 11G 0 disk └─md126 9:126 0 11G 0 raid1 nvme1n1 259:1 0 11G 0 disk └─md126 9:126 0 11G 0 raid1 $ ls /dev/md* /dev/md126 /dev/md127 /dev/md: testvol Feb 11, 2013 · The summary is that during a reshape of a raid6 on an up to date CentOS 6. Questa è la situazione: Dec 30, 2020 · The problem is whenever I need to change anything, mdadm can't access my raid array: mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? What I do is: Rewrite hdd raid's disks and the SSD I use as cache with zeroes using pv < /dev/zero Nov 4, 2021 · $ sudo mdadm --stop /dev/md0 mdadm: stopped /dev/md0 $ sudo mdadm --assemble --scan -v [ excluding all the random loop drive stuff ] mdadm: /dev/sdb is identified as a member of /dev/md/0, slot 1. 14 Apr 16, 2017 · If all you're trying to do is change the device number, add the array to your config file with the device number of our choice using the following command: echo "ARRAY /dev/md0 level=raid1 num-devices=2 UUID=$(blkid -s UUID -o value /dev/md127) devices=/dev/sdb,/dev/sdc" >> /etc/mdadm. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. You should not need to change the permissions of /dev/md127 and actually /dev only exists in memory so changes made will not exist upon reboot. Questa è la situazione: Feb 1, 2015 · When I try to stop raid I get the following: # mdadm --stop /dev/md127 mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? Googling about this there are a number of folks hitting this problem over a number of fedora releases. Sample Output: root@ubuntu-PC:~# mdadm --query /dev/md0 /dev/md0: 19. Questa è la situazione: Sudo mdadm --stop /dev/md126 Sudo mdadm --stop /dev/md127 Sudo mdadm --assemble --verbose /dev/md1 /dev/sdb1 /dev/sdc1 Sudo mdadm --assemble --verbose /dev/md2 /dev/sdb2 /dev/sdc2 すべてを検証します。 mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? SOLUTION is simple: check if there are any users logged in who are still in a directory on that drive. Apr 2, 2019 · I ran mdadm --detail and this is what i got /dev/md0: Version : 1. md: bind<sda> mdadm: added /dev/sda to /dev/md/imsm0 as -1 md: bind<sdb> mdadm: added /dev/sdb to /dev/md/imsm0 as -1 mdadm: Container /dev/md/imsm0 has been assembled with 2 drives mdadm I'm going to need some expert help - free beer/coffee to anyone who get's me on my way! My System I'm running Ubuntu 11. In linux everything is a file and these special device files are located I Have tried running sudo mdadm -A /dev/md0 but get: mdadm: /dev/md0 not identified in config file. mdadm: /dev/sdc1 is identified as a member of /dev/md0, slot 2. Questa è la situazione: May 28, 2023 · mdadm --manage /dev/md127 --fail /dev/sdc1 Then remove it from the array mdadm --manage /dev/md127 --remove /dev/sdc1 After which it is safe to power down and physically replace the disk. Any thoughts? [Update1] Apr 16, 2017 · If all you're trying to do is change the device number, add the array to your config file with the device number of our choice using the following command: echo "ARRAY /dev/md0 level=raid1 num-devices=2 UUID=$(blkid -s UUID -o value /dev/md127) devices=/dev/sdb,/dev/sdc" >> /etc/mdadm. curious, that creating an encrypted raid system on fedora seems to be an irreversible action. I am afraid that I wont recover my files. Jul 12, 2017 · I have been using my HDD as part of software RAID 1 array with the second device missing. conf, see for example this question for details on how to do that. 2. 40 GB) Used Dev Size : 1953513424 (1863. 4 - 31st August 2010 ~$ sudo mdadm --detail /dev/md0 /dev/md0: Version : 1. Feb 23, 2019 · First check the status of disk sdb by below command sudo smartctl -H /dev/sdb if it shows PASSED OR OK Then its in good condition Try re-adding disk /dev/sdb1 to raid by below command Steps to remove sudo mdadm --manage /dev/md127 --fail /dev/sdb sudo mdadm --manage /dev/md127 --remove /dev/sdb Add back to array sudo mdadm --manage /dev/md127 --add /dev/sdb Problem: # ls /dev/md* /dev/md0 /dev/md1 # dd if=/dev/zero of=/dev/sdb3 bs=1M count=1 # dd if=/dev/zero of=/dev/sdd3 bs=1M count=1 # mdadm --zero-superblock /dev/sdb3 # mdadm --zero-superblock /dev/sdd3 # mdadm --create -l 1 -n 2 /dev/md2 /dev/sdb3 /dev/sdd3 mdadm: cannot open /dev/sdb3: Device or resource busy # ls /dev/md* /dev/md0 /dev/md1 /dev/md127 /dev/md2 # mdadm -D /dev/md127 mdadm: md Jan 12, 2013 · And tried to add the new partition to the raid array and that is when I get the message that the partition is to small to be added to the raid array. mdadm: /dev/sda is identified as a member of /dev/md/0, slot 0. @JPT was trying to run the second command from your answer, which your wrote as sudo mdadm -r /dev/md127 /dev/sdc1 I just tried following your directions and found that the order of the removal params is flipped compared to the fail/faulty params: sudo mdadm -r /dev Posted: Wed Dec 14, 2011 7:28 pm Post subject: mdadm: cannot get array info for /dev/md Salve gente, mi trovo da live cd, ed ho bisogno di liberare sda1 dal RAID. You are currently viewing LQ as a guest. That examines the RAID superblock on a member device, you need to use this on /dev/sdX (with X being ina to d in your case), not on the already assembled RAID device. 6/mdadm --version mdadm - v3. If that does not work then sdb1 may need to be either added or readded to the array with mdadm --manage --add /dev/sdb1 md127 which will do a re-add if the device was already part of the array. 46. So, for example this is valid and working for sda drive: mdadm --zero-superblock /dev/sda or. 1. 2 Feature Map : 0x1 Array UUID : 9fd0e97e:8379c390:5b0dac21:462d643c Name : ncloud:vo1 (local to host ncloud) Creation Time : Tue Jan 25 11:23:04 2022 Raid Level : raid5 Raid Devices : 4 Avail Dev Size : 3906764976 (1862. mdadm --zero-superblock /dev/sda1 depending on how you have set up the RAID. 39 GiB 1000. 2 Feature Map : 0x0 Array UUID : 70ae8214:9e4a0f4f:de955df3:db5c9f39 Name : ant-16. Nov 6, 2017 · This won’t explain why your array ended up in read-only mode, but. Remove /dev/sdb1 from /dev/md127: mdadm /dev Jul 6, 2012 · Now, if you still do not get the raid array mounting on /dev/md0, but still on /dev/md127 do the following: Find the mounted array: df -kh; Then unmount the /dev/md127 device: umount /dev/md127; Then stop the array: mdadm -S /dev/md127; Then re-assemble the array: mdadm –assemble –scan; Then check the array: mdadm –detail /dev/md0; Once Aug 15, 2011 · However, # mdadm --stop /dev/md0 informs me thusly: mdadm: Cannot stop container /dev/md0: member md127 still active So from there I tried # mdadm --stop /dev/md127, but that lead to a message stating that mdadm: Cannot get exclusive access to /dev/md127: possibly it is still in use. 3. I recently set up an array for a NAS, but incorrectly sized the partitions in my setup script, and need to remove the array, re-partition the disks, and Sep 4, 2015 · EDIT: @Michael Hamptons comment: The device name /dev/md0 mentioned in the ARRAY line in the configuration file /etc/mdadm/mdadm. conf is not being read by the time the arrays are assembled. 0 or higher, use this: mdadm --assemble /dev/md3 /dev/sd[abcdefghijk]3 --update=name The OS is on a separate SSD disk (/dev/sda) which is not part of the raid array, so it boots but it cannot mount the array anymore. Reboot Feb 4, 2015 · Subject: Re: SOLVED mdadm: Cannot get exclusive access to /dev/md127; From: Rich Emberson <emberson. Trying to assemble and scan only shows /dev/sdc3 as active: $ sudo mdadm --stop /dev/md12[567] mdadm: stopped /dev/md126 mdadm: stopped /dev/md127 $ sudo cat /proc/mdstat Personalities : [linear] [raid1] unused devices: <none> $ sudo mdadm --assemble --scan mdadm: /dev/md/MyBookLiveDuo:3 assembled from 1 drive - not enough to start the array Posted: Wed Dec 14, 2011 7:28 pm Post subject: mdadm: cannot get array info for /dev/md Salve gente, mi trovo da live cd, ed ho bisogno di liberare sda1 dal RAID. When I try to fail one of the devices from the raid I get the followi= Posted: Wed Dec 14, 2011 7:28 pm Post subject: mdadm: cannot get array info for /dev/md Salve gente, mi trovo da live cd, ed ho bisogno di liberare sda1 dal RAID. <br>Also, the raid disks are encrypted along with the rest of the disk<br>in the \ machine. In other words, remove the name part, and set the device to /dev/md0. 00 UUID : a74ff408:37ff5c21:37e2a043:dbd5e4e5 Creation Time : Sat Aug 4 17:13:32 Aug 12, 2023 · [解決済み] Debian11 の mdadm で組んだ md0 が、再起動すると md127 になる問題 To put it back into the array as a spare disk, it must first be removed using mdadm --manage /dev/mdN -r /dev/sdX1 and then added again mdadm --manage /dev/mdN -a /dev/sdd1. Questa è la situazione: Nov 28, 2021 · mdadm /dev/md/mirror --fail /dev/sdc1 --remove /dev/sdc1 mdadm --grow /dev/md/mirror --raid-devices=2 If ever you happen to have already removed a disk from a three disk mirror to a two disks mirror, use only the second line (grow) to fix the degraded mode (tested on openSUSE 42. 02 GiB 2000. # # by default, scan all partitions (/proc/partitions) for MD superblocks. I would try the --force option, but the output of mdadm --detail /dev/md127 is as follows: Jul 20, 2022 · sudo mdadm --examine /dev/sda /dev/sda: Magic : a92b4efc Version : 1. Sadly, I could not find any fix. 65 GB) Raid Devices : 5 Total Devices : 5 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time Apr 24, 2013 · Run OLCE: # export MDADM_EXPERIMENTAL=1 # mdadm -G /dev/md127 -n3 3. ) then I'd be daring enough to try the --readwrite command. then saving in the mdadm. 14 GB) Used Dev Aug 3, 2022 · $ ls /dev/md* /dev/md126 /dev/md127 /dev/md: testvol $ /sbin/mdadm --remove /dev/md126 detached $ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT nvme0n1 259:0 0 11G 0 disk └─md126 9:126 0 11G 0 raid1 nvme1n1 259:1 0 11G 0 disk └─md126 9:126 0 11G 0 raid1 Apr 22, 2024 · Decided to go ahead and try to shrink raid-0 by first converting it to Raid 4. The puzzle is to see if this is possible without data loss (so without using the raid bios, because that seems to destroy all data). coccw whewvmp dyira jtoq ranvwn aqzbi gpbpthg jafbi mlcg mbhw
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