mdadm: add new device failed for /dev/sdb4 as 3: Invalid argument solution

mdadm --manage /dev/md125 -a /dev/sdb4
mdadm: add new device failed for /dev/sdb4 as 3: Invalid argument


Dec 19 01:23:48 storageboxtest kernel: [ 2328.854491] md: sdb4 does not have a valid v1.2 superblock, not importing!
Dec 19 01:23:48 storageboxtest kernel: [ 2328.854499] md: md_import_device returned -22


#zero the superblock and try again!
mdadm --zero-superblock /dev/sdb4
mdadm --manage /dev/md125 -a /dev/sdb4


mdadm: add new device failed for /dev/sdb4 as 3: Invalid argument



Solution / this is the only thing that fixed it (basically do more than just zero-superblock)

dd if=/dev/zero of=/dev/sdb4
^C77149+0 records in
77149+0 records out
39500288 bytes (40 MB) copied, 5.35553 s, 7.4 MB/s


#success!

mdadm --manage /dev/md125 -a /dev/sdb4
mdadm: added /dev/sdb4
 

The weird thing is that you can see zero-superblock was NOT enough to fix it and sometimes you have to wipe a little further than zero-superblock does and it will fix it.  I didn't find this solution anywhere so I thought I'd share it.


Tags:

mdadm, dev, sdb, invalid, solutionmdadm, md, dec, storageboxtest, kernel, valid, superblock, importing, md_import_device, dd, bytes, mb, copied, didn,

Latest Articles

  • Linux How To Create A RamDisk
  • mdadm force resync when resync=PENDING solution
  • Proxmox Breaks Storage/LVM Backing If Killing QEMU-IMG
  • Proxmox trying to acquire lock... TASK ERROR: can't lock file '/var/lock/qemu-server/lock-102.conf' - got timeout
  • Debian 9 SSH root password authentication failure password not working problem / solution
  • QEMU / KVM How To Manually Create Basic Virtual Machine VM
  • Linux wlan0 check all wireless clients
  • PHP Issues With Decoding Strange Smart Quotes And Non-Standard ASCII Characters
  • /etc/iproute2/rt_tables default settings file in Linux Centos 6,7 and most other NIX's
  • bind named error solutions named[2169]: error (no valid DS) resolving / error (broken trust chain) resolving / : error (no valid RRSIG) resolving 'com/DS/IN':
  • iptables how to log ALL dropped incoming packets
  • How To Edit Linux Based NM Network Manager Connection Settings Without GUI
  • Linux Disable IPV6 Centos / Debian / Mint Howto
  • Linux use growisofs to burn a larger file on a BD-R / Bluray Disc
  • Linux partprobe/partx cannot access last and 4th partition
  • DRBD Errors Caused By Physical Corruption
  • mdadm: add new device failed for /dev/sdb4 as 3: Invalid argument solution
  • Linux named / bind how to dump, view and clear the cache!
  • Centos 6 / 7 / 8 How To Change Default nameservers in /etc/resolv.conf when using DHCP / dhclient
  • Adobe Acrobat Reader for Linux to use and view XFA Fillable Forms