Univention Bugzilla – Bug 29952
Configure VM writeback times to prevent data loss when unplugging USB mass storage
Last modified: 2013-03-26 09:14:07 CET
In "TCS experimental"the following was set in the LTSPD init script: echo "10" > /proc/sys/vm/dirty_expire_centisecs echo "10" > /proc/sys/vm/dirty_writeback_centisecs These values also need to be configured if the UCC thin client image is used. For the desktop image we should stick with the Ubuntu default.
univetion-corporate-client defines an Upstart job ucc-base A UCR variable should be configured, which - if activated - sets the specified sysctls. Additional this variable must be set for the thin client image: The official UCC thin client images are defined in ucc-integration/ucc-image-toolkit/example/ucc-thinclient.cfg (section ucr_variables:)
Added two ucr variables to set quick writeback times for thinclient - ucc/sysctl/dirtywritebackcentisecs - ucc/sysctl/dirtyexpiredcentisecs Set ucr vm writeback variables for thinclient image in ucc-thinclient.cfg
(In reply to comment #2) > Added two ucr variables to set quick writeback times for thinclient > - ucc/sysctl/dirtywritebackcentisecs > - ucc/sysctl/dirtyexpiredcentisecs > > Set ucr vm writeback variables for thinclient image in ucc-thinclient.cfg OK -> variables set to 10 OK -> values are written to file by ucc-base.conf Verified.
UCC 1.0 has been released: http://forum.univention.de/viewtopic.php?f=26&t=2417 http://forum.univention.de/viewtopic.php?f=54&t=2418 If this error occurs again, please use "Clone This Bug".