Recreating missing virtual disk (VMDK) Descriptor File Problem- You just noticed that virtual machine’s VMDK files are missing and lost somehow. The reason, not able to start VM and when you try to add existing HDD – existing VMDK and -flat. VMDK files are not available to attach with Virtual Machine too. Solution – We …
Recreating missing virtual disk (VMDK) Descriptor File Vmware Read More »
Delete a file called abc.sh: rm abc.sh Type the following command: # debugfs -w /dev/mapper/root At debugfs: prompt type lsdel command: debugfs: lsdel Sample outputs: Inode Owner Mode Size Blocks Time deleted 2113537 0 120777 3 1/ 1 Tue May 1 06:21:22 2016 1 deleted inodes found. Get block data, enter: debugfs: logdump -i <2113537> …
Howto: Recover a file when you don’t know inode number in Linux Read More »
A step-by-step guide for recovering files using debugfs [root@unix-support-server ~]# mount /dev/sda2 on / type ext4 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw) /dev/sda1 on /boot type ext4 (rw) /dev/sdb1 on /var/www type ext3 (rw) /dev/sdd1 on …
It is possible to recover the file using the “fsdb” command (filesystem debugger). when, No new files have been created on the filesystem. No files have been extended. The filesystem is able to be unmounted. Warning: I have test this in my test server. This is undocumented one. You may facing the critical problem when …
Encrypting Filesystem on AIX 6.1. EFS offers 2 modes of operation: Root Admin mode This is the default mode. Root can reset user and group keystore passwords. Root Guard mode Root does not have access to user’s encrypted files and cannot change their passwords. Note: NFS exports of EFS filesystems are not supported. 1. Prerequisites: …
To halt the VNX for file server, type: # /nasmcd/sbin/nas_halt now ARE YOU SURE YOU WANT TO CONTINUE? [ yes or no ] : # yes Sending the halt signal to the Master Control Daemon…: Done . . Halting system… flushing ide devices: hda hdd Power down. It can take as long as 20 minutes …
Create a RAM disk of 10 MB # mkramdisk 10M /dev/rramdisk0 Create a JFS File System on this RAM disk # mkfs -V jfs /dev/rramdisk0 mkfs:destroy /dev/rramdisk0 (yes) ? y Create Mountpoint # mkdir /ramdisk Mount RAM File System # mount -V jfs -o nointegrity /dev/ramdisk0 /ramdisk The purpose of the mkramdisk command is to …
Superblock : File System size and indentification, Free list, fragment size, nbpi. Inodes: File size, ownership, permissions, pointers to data blocks. Blocks: Data blocks contain data and Indirect block contain pointers to data blocks. Journaled file systems are built within logical volumes. Because journaled file systems exist within logical volumes, the size of …
You need to use dd command to create swapfile. Next you need to use mkswap command to set up a Linux swap area on a device or in a file. a) Login as the root user b) Type following command to create 512MB swap file (1024 * 1024MB = 1048576 block size): # …
The following table shows the variables and their corresponding values. Variables in Standard File Systems Variable Description <diskname> Full path of a disk, for example, /dev/rz11c <rawdiskname> Full path of a raw disk, for example, /dev/rrz11c <disktype> Disk type, for example, rz28 <mountpointname> Full path of a mount point, for example, SAP DB: /sapdb/<SAPSID>/sapdata1 …
Compaq Tru64 UNIX: Setting up Standard File Systems Read More »