Mindaugas wrote:
>
> Hi,
>
> > > How to explain to fdisk that /dev/sda size changed? I increased
> > > LUN on storage, reloaded iscsi, did echo 1 >
> > > /sys/<something>/rescan. And I see in "dmesg" that kernel
> found new
> > > size of the LUN. But when I type "fdisk /dev/sda"
> > > it still shows old size. On /dev/sda1 sits LVM PV and I'd like to
> > > resize it instead of adding one more PV to volume group.
> > >
> >
> > I think it may be the MBR that still has the old size in it.
> >
> > Try opening it in fdisk, save it, then re-open it.
>
> Probably. But opening and saving does not help. "partprobe
> /dev/sda" does not help too.
>
> Mindaugas
>
> dmesg:
> SCSI device sda: 1048576000 512-byte hdwr sectors (536871 MB)
> SCSI device sda: drive cache: write through
>
> # fdisk /dev/sda
>
> The number of cylinders for this disk is set to 26108.
> There is nothing wrong with that, but this is larger than
> 1024, and could in certain setups cause problems with:
> 1) software that runs at boot time (e.g., old versions of LILO)
> 2) booting and partitioning software from other OSs
> (e.g., DOS FDISK, OS/2 FDISK)
>
> Command (m for help): p
>
> Disk /dev/sda: 214.7 GB, 214748364800 bytes
> 255 heads, 63 sectors/track, 26108 cylinders Units =
> cylinders of 16065 * 512 = 8225280 bytes
>
> Device Boot Start End Blocks Id System
> /dev/sda1 1 26108 209712478+ 8e Linux LVM
>
> Command (m for help): w
> The partition table has been altered!
>
> Calling ioctl() to re-read partition table.
>
> WARNING: Re-reading the partition table failed with error 16:
> Device or resource busy.
> The kernel still uses the old table.
> The new table will be used at the next reboot.
> Syncing disks.
>
> # partprobe /dev/sda
>
> # fdisk -l /dev/sda
>
> Disk /dev/sda: 214.7 GB, 214748364800 bytes
> 255 heads, 63 sectors/track, 26108 cylinders Units =
> cylinders of 16065 * 512 = 8225280 bytes
>
> Device Boot Start End Blocks Id System
> /dev/sda1 1 26108 209712478+ 8e Linux LVM
Make sure no partitions on the volume are mounted before
running fdisk, you can't do this "live".
-Ross
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