increase root partition Post: 302530627

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Operating Systems Linux Red Hat increase root partition Post 302530627 by reply.ravi on Tuesday 14th of June 2011 01:18:06 PM

06-14-2011

Registered User

Code:

lvdisplay
  --- Logical volume ---
  LV Name                /dev/vg0/lvm
  VG Name                vg0
  LV UUID                4q8Yrk-wkJh-cxyY-rVil-9nNs-Td3i-ZoMfey
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                10.00 GB
  Current LE             2560
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

[root@UPID-RHEL7 ~]#
[root@UPID-RHEL7 ~]# vgdisplay
  --- Volume group ---
  VG Name               vg0
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  2
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               1
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               301.43 GB
  PE Size               4.00 MB
  Total PE              77165
  Alloc PE / Size       2560 / 10.00 GB
  Free  PE / Size       74605 / 291.43 GB
  VG UUID               Jpz5kZ-iaJd-HedN-Ehab-oQgX-XRXL-eQKOCy

[root@UPID-RHEL7 ~]#
[root@UPID-RHEL7 ~]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda6
  VG Name               vg0
  PV Size               301.43 GB / not usable 2.90 MB
  Allocatable           yes
  PE Size (KByte)       4096
  Total PE              77165
  Free PE               74605
  Allocated PE          2560
  PV UUID               Y79DFU-DlDa-jcvZ-1vcS-aufc-8J00-hUAVUs

[root@UPID-RHEL7 ~]#
[root@UPID-RHEL7 ~]# fdisk -l

Disk /dev/sda: 437.9 GB, 437998583808 bytes
255 heads, 63 sectors/track, 53250 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1         319     2562336   83  Linux
/dev/sda2             320       10581    82429515   83  Linux
/dev/sda3           10582       12684    16892347+  82  Linux swap / Solaris
/dev/sda4           12685       53250   325846395    5  Extended
/dev/sda5           12685       13901     9775521   83  Linux
/dev/sda6           13902       53250   316070811   8e  Linux LVM

Last edited by pludi; 06-14-2011 at 05:21 PM..

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switch_root

SWITCH_ROOT(8)                                                 System Administration                                                SWITCH_ROOT(8)

NAME

       switch_root - switch to another filesystem as the root of the mount tree

SYNOPSIS

       switch_root [-hV]

       switch_root newroot init [arg...]

DESCRIPTION

       switch_root moves already mounted /proc, /dev, /sys and /run to newroot and makes newroot the new root filesystem and starts init process.

       WARNING: switch_root removes recursively all files and directories on the current root filesystem.

OPTIONS

       -h, --help
              Display help text and exit.

       -V, --version
              Display version information and exit.

RETURN VALUE

       switch_root returns 0 on success and 1 on failure.

NOTES

       switch_root  will  fail  to  function if newroot is not the root of a mount. If you want to switch root into a directory that does not meet
       this requirement then you can first use a bind-mounting trick to turn any directory into a mount point:

              mount --bind $DIR $DIR

SEE ALSO

       chroot(2), init(8), mkinitrd(8), mount(8)

AUTHORS

       Peter Jones <pjones@redhat.com>
       Jeremy Katz <katzj@redhat.com>
       Karel Zak <kzak@redhat.com>

AVAILABILITY

       The switch_root command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.

util-linux                                                           June 2009                                                      SWITCH_ROOT(8)

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