On Thursday 09 May 2013, you wrote: > On Thu, May 09, 2013 at 09:07:35AM +0200, Stefan Fritsch wrote: > > I have two disks, one SSD and one HDD. There are to MD RAID1 > > volumes that each use one partition on the SSD and one on the > > HDD. > > > > After the first reboot with 3.8, MD kicked the HDD's partitions > > from both RAID devices. > > [...] > > This sounds like a known bug that is fixed in 3.8.12. md will > send discard commands to both the SSD and the HDD, whereas it > should of course send them to the SSD only. > > Are you are using btrfs or ext4 filesystems with the 'discard' > option? If so, does removing the option avoid this problem?
I am using ext4 but without either discard or nodiscard option. "grep discard /proc/mounts" gives no output (when running 3.2). According to the docs, nodiscard should be the default. So I guess it is not worth the effort to test with an explicit "nodiscard". Or has the default changed between 3.2 and 3.8? If so, Documentation/filesystems/ext4.txt is out of date. More information which may or may not be helpful: md0 has ext4 on it without LVM (root partition). md1 is a LVM pv. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
