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authorJoe Thornber <ejt@redhat.com>2014-05-09 15:59:38 +0100
committerMike Snitzer <snitzer@redhat.com>2014-05-14 16:11:37 -0400
commit85ad643b7e7e52d37620fb272a9fd577a8095647 (patch)
treee7599aa49a532c6ae05ac99a31bf901341ce2b45 /drivers/pnp/quirks.c
parent8d07e8a5f5bc7b90f755d9b427ea930024f4c986 (diff)
dm thin: add timeout to stop out-of-data-space mode holding IO forever
If the pool runs out of data space, dm-thin can be configured to either error IOs that would trigger provisioning, or hold those IOs until the pool is resized. Unfortunately, holding IOs until the pool is resized can result in a cascade of tasks hitting the hung_task_timeout, which may render the system unavailable. Add a fixed timeout so IOs can only be held for a maximum of 60 seconds. If LVM is going to resize a thin-pool that is out of data space it needs to be prompt about it. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org # 3.14+
Diffstat (limited to 'drivers/pnp/quirks.c')
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