On Sun, Aug 6, 2017 at 8:49 AM, Cloud Admin <admin@xxxxxxxxxxxxxxxxxxx> wrote: > Hi, > is it safe (has it an effect?) to use the 'clear_cache' option in a > 'mount -o remount'? I recognize messages in my kernel log regarding > 'BTRFS info (device dm-7): The free space cache file (31215079915520) > is invalid. skip it'. I would like to fix it and would do it (in best > case) without rebooting. It is safe and the cache is immediately rebuilt. You will see 'space_cache,clear_cache' as mount options, which is normal and you can ignore. I just tried this with a remount and I get the expected messaging. [ 400.465624] BTRFS info (device sda7): force clearing of disk cache [ 400.465639] BTRFS info (device sda7): disk space caching is enabled Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
