All of lore.kernel.org
 help / color / mirror / Atom feed
From: Ray Van Dolson <rayvd@bludgeon.org>
To: dm-devel@redhat.com
Subject: loopX too small for target
Date: Tue, 7 Jun 2011 22:13:41 -0700	[thread overview]
Message-ID: <20110608051340.GA16351@bludgeon.org> (raw)

I've imaged the hard disk off of a CentOS 5 machine via dd which
resulted in a 112GB file "gawaine.img":

  # file gawaine.img 
  gawaine.img: x86 boot sector; GRand Unified Bootloader, stage1 version 0x3, boot drive 0x80, 1st sector stage2 0x8841; partition 1: ID=0x83, active, starthead 1, startsector 63, 208782 sectors; partition 2: ID=0x8e, starthead 0, startsector 208845, 234227700 sectors, code offset 0x48
  [root@brick VM]# sfdisk -l gawaine.img 
  Disk gawaine.img: cannot get geometry

  Disk gawaine.img: 14589 cylinders, 255 heads, 63 sectors/track
  Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

     Device Boot Start     End   #cyls    #blocks   Id  System
  gawaine.img1   *      0+     12      13-    104391   83  Linux
  gawaine.img2         13   14592   14580  117113850   8e  Linux LVM
  gawaine.img3          0       -       0          0    0  Empty
  gawaine.img4          0       -       0          0    0  Empty

  I'm trying to access this image via kpartx, but running into the
  following:

  [root@brick VM]# losetup -a
  [root@brick VM]# kpartx -av gawaine.img 
  add map loop0p1 (253:5): 0 208782 linear /dev/loop0 63
  device-mapper: resume ioctl failed: Invalid argument
  create/reload failed on loop0p2
  add map loop0p2 (0:0): 0 234227700 linear /dev/loop0 208845
  [root@brick VM]# dmesg
  device-mapper: table: 253:6: loop0 too small for target: start=208845, len=234227700, dev_size=234375000

Hmm...

  [root@brick VM]# losetup -a
  /dev/loop0: [fd03]:2386057117 (gawaine.img)
  [root@brick VM]# ls -l /dev/mapper/loop0p1 
  lrwxrwxrwx 1 root root 7 Jun  7 22:18 /dev/mapper/loop0p1 -> ../dm-5

So only the non-LVM partitioned (much smaller) got mapped.  Are there
size limitations to what a loopback device can handle?

  [root@brick VM]# rpm -q kpartx util-linux-ng
  kpartx-0.4.9-31.el6.x86_64
  util-linux-ng-2.17.2-6.el6.x86_64

Thanks,
Ray

             reply	other threads:[~2011-06-08  5:13 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-08  5:13 Ray Van Dolson [this message]
2011-06-08  5:28 ` loopX too small for target Ray Van Dolson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20110608051340.GA16351@bludgeon.org \
    --to=rayvd@bludgeon.org \
    --cc=dm-devel@redhat.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.