Comments on: Re-read The Partition Table Without Rebooting Linux System

By: Fantomas

Fantomas — Wed, 07 Sep 2011 15:22:25 +0000

excellent!

thank you very much!

By: Rakesh Gupta

Rakesh Gupta — Sat, 04 Jun 2011 04:37:22 +0000

BLKRRPART failed: Device or resource busy

By: DaveQB

DaveQB — Tue, 24 May 2011 03:09:52 +0000

Try stopping services like samba and nfs. I found restarting nfs freed up my disk even after I used fdisk on it.

By: DaveQB

DaveQB — Tue, 24 May 2011 02:56:26 +0000

I found that even after all the fdisk’ing, the partition/disk was still in use. Ended up being nfs (even though I was not sharing that disk any more and had run exportfs -av a few times). I had to restart nfs server to free the disk, then partprobe worked.

I thought I was heading for a reboot.

By: Rakesh Gupta

Rakesh Gupta — Mon, 23 May 2011 13:40:42 +0000

i am run this command in rhel6 .and i want without reboot update partition table.when i am use partprobe ,kpartx, and hdperm -z command .
system are given massage device or resource busy due to failed .

By: Rakesh Gupta

Rakesh Gupta — Mon, 23 May 2011 07:08:40 +0000

i am run this command in rhel6 .and i want without reboot update partition table.when i am use partprobe ,kpartx, and hdperm -z command .
system are give massage device or resource busy due to failed .
so what are doing me pls help???

By: Tony

Tony — Wed, 05 Jan 2011 22:09:44 +0000

Thank you, I was going crazy trying to figure out why my table was not refreshing. Thank you,,,thank you,,,thank you.

By: Nepto

Nepto — Sat, 27 Nov 2010 14:32:15 +0000

Thank you very much for this great advice.

Btw, if you want to know what partitions kernel sees, glance at the /proc/partitions file

By: S.D

S.D — Tue, 05 Oct 2010 12:13:25 +0000

partprobe won’t always work. If you are lucky hdparm -z will work, but again cannot be guartenteed. The problem with Linux and partition tables carries on into the 21st century’s second decade.

By: DaveQB

DaveQB — Fri, 27 Nov 2009 01:33:44 +0000

A 4th way is:

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

And follow dmesg to see the kernel rescan the disk. I found this worked on a server that partprobe did not.

By: Eric

Eric — Sat, 24 Oct 2009 12:32:38 +0000

on RH systems you may need to run udevstart after partprobe

By: Harish

Harish — Sun, 18 Oct 2009 17:16:11 +0000

Never was able to get the disk formatting re-read using partprobe. Had to reboot servers. May be to note that I am working on Redhat clusters with gfs. That shouldn’t matter much, as I run partprobe on both nodes.

By: Schmoove

Schmoove — Wed, 02 Sep 2009 11:12:59 +0000

Boy was I happy to find this post. Just added a new partition to my gentoo production server after 463 days uptime and stumbled across the above mentioned ioctl warning. Thanks guys for the post and the comments :)

By: jason

jason — Wed, 27 May 2009 22:21:20 +0000

I found this website while I was trying to figure out what the difference between the three ways I’ve found so far (partprobe, hdparm -z /dev/disk, and blockdev –rereadpt /dev/disk) is.

By: Matti

Matti — Thu, 12 Feb 2009 08:30:52 +0000

Thanks for the tips (LINUXTITLI, Jason) and also thanks domen for making this more googlable!

Created a new partition from unformatted disk space (got error in re-reading the partition table: device busy) , partprobed, mkfs.ext3′d, e2labeled and mounted!
No reboot needed, thanks again. :)

By: Romaric

Romaric — Mon, 15 Sep 2008 20:49:02 +0000

Thanks a lot !

And in order to install parted for gentoo users :

emerge -av parted

;)

By: James Cassell

James Cassell — Thu, 11 Sep 2008 01:51:22 +0000

Thank You!

You saved me from having to restart my server!

(restarting is a real pain in the neck)

By: Jason

Jason — Tue, 17 Apr 2007 21:29:55 +0000

When partprobe isn’t available you can also (sometimes) use:

# hdparm -z /dev/sdX

which will re-read that device’s partition table.

By: domen

domen — Thu, 07 Dec 2006 12:48:10 +0000

Thank you!

And to make this a bit more googlable:
fdisk printout: “Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 16: Device or resource busy”

By: Jeganatham

Jeganatham — Wed, 21 Jun 2006 10:28:31 +0000

Its a very good tip that can be used in a production evironment without any downtime