From 8c0f0e8c9f07e6554b2281f86f00e769cf805fd9 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Thu, 5 Dec 2013 15:47:24 -0500 Subject: [PATCH] dm thin: requeue bios to DM core if no_free_space and in read-only mode Now that we switch the pool to read-only mode when the data device runs out of space it causes active writers to get IO errors once we resume after resizing the data device. If no_free_space is set, save bios to the 'retry_on_resume_list' and requeue them on resume (once the data or metadata device may have been resized). With this patch the resize_io test passes again (on slower storage): dmtest run --suite thin-provisioning -n /resize_io/ Later patches fix some subtle races associated with the pool mode transitions done as part of the pool's -ENOSPC handling. These races are exposed on fast storage (e.g. PCIe SSD). Signed-off-by: Mike Snitzer Acked-by: Joe Thornber --- Reading git-format-patch failed