https://bugzilla.kernel.org/show_bug.cgi?id=70121 --- Comment #3 from Phillip Susi <psusi@xxxxxxxxxx> --- -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2/6/2014 5:38 AM, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > Full data journaling provides the ability that it is guaranteed > that a file will never be saved visible for the user in a damaged > state (except a hardware defect appears afterwards). But this has > the disadvantage that the writing througput is ~halfed as all files > are written 2 times. It does no such thing. To do that, a new kernel api is needed to allow the application to specify where transactions start/stop. Data journaling only makes sense for an external journal on an ssd or similar: then fsync() and friends can return as soon as the data hits the ssd and rely on it being safely migrated to the hdd in the future. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJTF4sKAAoJEI5FoCIzSKrwBpsH/35GAm2iqyNudw0JjJdceYqd PC+47MwQoJE2kcGLNCPVZLhRdHg+fWF6JKewnGAJXz6jsOIeblWyqyL03x8cCDMB 107ssZzXy8OllhczGp1oMR4q7bM0RiIwDjqD8qPJxYwTOHcoIp7RbyK0ER++LcE6 lISrSCyzyqpgo9o2oRAlAdP8/aioaOyiJbGpIhfH42Je+zG5k3mGwaCIuVvBR+Ef wm6rOqApxv6JwZy0s12alq6MUFMzE9qb9WTzLiDtPybSFzvUgt5brePi74HdJZHs JYjtUqk43q8wYCWcDcEjKb8q6/h/HGP296ZhM9CoXjq+HYqqWWXbl9T5F5+Nl6k= =nADc -----END PGP SIGNATURE----- -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
