2 Commits

Author	SHA1	Message	Date
Dimitri John Ledkov	18552ef041	udev.rules: make safe timeouts compatible with split-usr systems. ... Instead of /usr/bin/sh, and /usr/bin/echo, use /bin/sh and shell built-in echo respectively. This makes udev-md-raid-safe-timeouts.rules to be compatible with both usr-merged and split-usr systems alike. Signed-off-by: Dimitri John Ledkov <xnox@ubuntu.com> Signed-off-by: Jes Sorensen <jsorensen@fb.com>	2018-07-31 11:43:14 -04:00
Jonathan Underwood	b96c193b9f	Add udev-md-raid-safe-timeouts.rules ... These udev rules attempt to set a safe kernel controller timeout for disks containing RAID level 1 or higher partitions for commodity disks which do not have SCTERC capability, or do have it but it is disabled. No attempt is made to change the STCERC settings on devices which support it. This attempts to mitigate the problem described here: https://raid.wiki.kernel.org/index.php/Timeout_Mismatch http://strugglers.net/~andy/blog/2015/11/09/linux-software-raid-and-drive-timeouts/ where the kernel controller may timeout on a read from a disk after the default timeout of 30 seconds and consequently cause mdraid to regard the disk as dead and eject it from the RAID array. The mitigation is to set the timeout to 180 seconds for disks which contain a RAID level 1 or higher partition. Signed-off-by: Jonathan G. Underwood <jonathan.underwood@gmail.com> Signed-off-by: Jes Sorensen <jsorensen@fb.com>	2018-02-01 09:08:51 -05:00