On Wednesday, July 13, 2011 07:17:27 Theodore Tso wrote: > On Jul 12, 2011, at 3:18 PM, Mike Frysinger wrote: > > when i read the kernel source, that seemed to be the case. but i dont > > think it's the case for reiserfs, and i think there's a very tiny edge > > case with ext[34] related to moving the journal, but probably so small > > we can ignore it :p. > > What do you think the edge case is? Yes, the external journal's > dev_t is cached, but that is only used by the kernel since it > was simpler than having callouts to a userspace daemon. > > E2fsck will use blkid to locate the external journal, and when it > finds it, it will update the cached dev_t if it is out of date, so that > at mount time the kernel will be able to find the external journal. > This way even if the external journal is on a device with an > unstable dev_t (e.g., a USB device), the right thing should > happen... that sounds like it covers all the non-pathological cases ;) -mike
Attachment:
signature.asc
Description: This is a digitally signed message part.
