Linux partprobe/partx cannot access last and 4th partition

On a test machine I was never able to access to a newly created 4th partiton.  As we can see there are dev devices for everything but the 4th partition.

The normal "partprobe" or "kpartx" or kernel being told to rescan the block device didn't help (only a reboot did).

fdisk -l /dev/sda

Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1         123      987966   83  Linux
/dev/sda2             124        3771    29302560   83  Linux
/dev/sda3            3772       11067    58605120   83  Linux
/dev/sda4           11068       91201   643676355   83  Linux


#but where is sda4 why can't I see it but the other partitions are available in /dev
ls /dev/sda*
/dev/sda  /dev/sda1  /dev/sda2  /dev/sda3


partprobe didn't help

 partprobe
Warning: WARNING: the kernel failed to re-read the partition table on /dev/sda (Device or resource busy).  As a result, it may not reflect all of your changes until after reboot.
Warning: WARNING: the kernel failed to re-read the partition table on /dev/sdb (Device or resource busy).  As a result, it may not reflect all of your changes until after reboot.
Warning: WARNING: the kernel failed to re-read the partition table on /dev/sdc (Device or resource busy).  As a result, it may not reflect all of your changes until after reboot.
Warning: /dev/sdd contains GPT signatures, indicating that it has a GPT table.  However, it does not have a valid fake msdos partition table, as it should.  Perhaps it was corrupted -- possibly by a program that doesn't understand GPT partition tables.  Or perhaps you deleted the GPT table, and are now using an msdos partition table.  Is this a GPT partition table?
Warning: WARNING: the kernel failed to re-read the partition table on /dev/sdd (Device or resource busy).  As a result, it may not reflect all of your changes until after reboot.




partx didn't help

partx -a /dev/sda
BLKPG: Device or resource busy
error adding partition 1
BLKPG: Device or resource busy
error adding partition 2
BLKPG: Device or resource busy
error adding partition 3
BLKPG: Device or resource busy
error adding partition 4

OK let's manually tell the kernel to rescan the relevant block device.


echo 1 > /sys/block/sda/device/rescan
 


Tags:

linux, partprobe, partx, partition, newly, partiton, dev, devices, quot, kpartx, kernel, rescan, didn, reboot, fdisk, sda, disk, gb, bytes, sectors, cylinders, sector, optimal, identifier, partitions, ls, resource, reflect, sdb, sdc, sdd, contains, gpt, signatures, indicating, valid, msdos, corrupted, doesn, deleted, blkpg, adding, ok, manually, relevant, echo, sys,

Latest Articles

  • qemu: could not load PC BIOS 'bios-256k.bin' solution
  • Proxmox How To Custom Partition During Install
  • Hyper-V Linux VM Boots to Black Screen, Storage, NIC Not Found Issues
  • Ubuntu Mint How to Fix Missing/Broken /dev and /dev/pts which causes terminal to immediately close exit and not work
  • How high can a Xeon CPU get?
  • bash fix PATH environment variable "command not found" solution
  • Ubuntu Linux Mint Debian Redhat Youtube Cannot Play HD or 4K videos, dropped frames or high CPU usage with Nvidia or AMD Driver
  • hostapd example configuration for high speed AC on 5GHz using WPA2
  • hostapd how to enable and use WPS to connect wireless devices like printers
  • Dell Server Workstation iDRAC Dead after Firmware Update Solution R720, R320, R730
  • Cloned VM/Server/Computer in Linux won't boot and goes to initramfs busybox Solution
  • How To Add Windows 7 8 10 11 to GRUB Boot List Dual Booting
  • How to configure OpenDKIM on Linux with Postfix and setup bind zonefile
  • Debian Ubuntu 10/11/12 Linux how to get tftpd-hpa server setup tutorial
  • efibootmgr: option requires an argument -- 'd' efibootmgr version 15 grub-install.real: error: efibootmgr failed to register the boot entry: Operation not permitted.
  • Apache Error Won't start SSL Cert Issue Solution Unable to configure verify locations for client authentication SSL Library Error: 151441510 error:0906D066:PEM routines:PEM_read_bio:bad end line SSL Library Error: 185090057 error:0B084009:x509 certif
  • Linux Debian Mint Ubuntu Bridge br0 gets random IP
  • redis requirements
  • How to kill a docker swarm
  • docker swarm silly issues