All of lore.kernel.org
 help / color / mirror / Atom feed
From: Anand Jain <Anand.Jain@oracle.com>
To: linux-btrfs@vger.kernel.org
Subject: device failure hangs the system
Date: Fri, 01 Jul 2011 17:25:50 +0800	[thread overview]
Message-ID: <4E0D929E.7030704@oracle.com> (raw)


hi,

Following test case causes my remote system to hard-hang and does
not respond to any key strokes.

-----------
# btrfs fi show
failed to read /dev/sr0
Label: none  uuid: 75ad3c9f-f661-498e-8c13-89d4e4c58312
	Total devices 3 FS bytes used 28.00KB
	devid    1 size 465.76GB used 2.02GB path /dev/sdb
	devid    3 size 465.76GB used 2.01GB path /dev/sdd
	devid    2 size 465.76GB used 1.01GB path /dev/sdc

Btrfs v0.19-35-g1b444cd
------------


Stopping the disk
------------
# echo 1 > /sys/block/sdd/device/delete
------------
------------
# dmesg | tail
sd 3:0:0:0: [sdd] Stopping disk
::
#
------------

------------
# btrfs fi show
failed to read /dev/sr0
Label: none  uuid: 75ad3c9f-f661-498e-8c13-89d4e4c58312
	Total devices 3 FS bytes used 28.00KB
	devid    1 size 465.76GB used 2.02GB path /dev/sdb
	devid    2 size 465.76GB used 1.01GB path /dev/sdc
	*** Some devices missing

Btrfs v0.19-35-g1b444cd
------------

and the following command hangs the system.
-------------
# btrfs fi balance /btrfs
-------------

Any idea if this is an known issue ? OR if there is any better way
to fail a disk (or a loop disk) for testing.

(something similar to cfgadm -c unconfigure in solaris).

Thanks
-Anand


             reply	other threads:[~2011-07-01  9:25 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-01  9:25 Anand Jain [this message]
2011-07-01  9:42 ` device failure hangs the system Anand Jain
2011-07-01  9:44   ` Roman Mamedov
2011-07-01 20:14 ` Josef Bacik
2011-07-07  9:35   ` Anand Jain

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=4E0D929E.7030704@oracle.com \
    --to=anand.jain@oracle.com \
    --cc=linux-btrfs@vger.kernel.org \
    /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.