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2010 Nov 05
2
i/o scheduler deadlocks with loopback devices
...n dom0 version 3.4.2.
domU: Ubuntu 10.04, 2.6.36-rc6 based on Stefano Stabellini''s
v2.6.36-rc6-urgent-fixes tree.
Paravirtual disks and network interfaces.
Root filesystem on /dev/xvda3, formatted ext3, mounted with default options.
Both dom0 and domU are using the CFQ i/o scheduler.
The xvbd is based on LVM, on top of a local SATA RAID array.
To produce this, I can do one of the following:
Set up domU as a primary drbd node, with my drbd volume on top of a
local loopback device, and then rsync many files to the volume, delete
them, and repeat until the crash.
Mount a linux iso via...
2008 Apr 29
18
tap:aio not working...
I''m running SLES10 SP1 and have been using file:/ for my file-backed domUs. The domUs sit on a shared OCFS2 SAN-backed filesystem and are run on my three or four XEN servers. I''m having issues with the loopback devices not being released when the domUs shutdown or migrate, so I decided to switch over to tap:aio for my file-backed domUs. This isn''t working, either.