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| author | Pavel Machek <pavel@suse.cz> | 2009-01-15 13:51:03 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-02-12 09:50:38 -0800 |
| commit | e117993af63778e46f68ea7477ff502e90d1c552 (patch) | |
| tree | dd47e3adbb66f390fdacf305c4ab3ddfcef1f269 /block | |
| parent | f5d7b376ef4ef7acde7049d2c0f6222ccfcd964c (diff) | |
| download | lwn-e117993af63778e46f68ea7477ff502e90d1c552.tar.gz lwn-e117993af63778e46f68ea7477ff502e90d1c552.zip | |
nbd: do not allow two clients at the same time
commit c91192d66d6cea7878b8542c9d9f1873971aba92 upstream.
Two nbd-clients at same time are bad idea, and cause WARN_ON from nbd in
2.6.28-rc7 from sysfs_add_one. This simply prevents that from happening.
To reproduce:
cat /dev/zero | head -c 10000000 > /tmp/delme.fstest.fs
nbd-server 9100 -l /anyone.can.connect > /tmp/delme.fstest.fs &
sleep 1
nbd-client localhost 9100 /dev/nd0 &
nbd-client localhost 9100 /dev/nd0 &
Signed-off-by: Pavel Machek <pavel@suse.cz>
Acked-by: Paul Clements <paul.clements@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions