[lkml]   [2002]   [Sep]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: md multipath with disk missing ?
On 2002-09-09T15:08:31,
Oktay Akbal <> said:

> Can someone tell me, how md multipathing works, when a drive fails
> completly ?

Well, if the drive (not the path to it) fails _completely_, it won't be
detected by the md autostart (as it can't find the md superblock).

If it fails completely during runtime, all paths but the last one to it will
be disabled, as a drive failure can't be distinguished from a path failure in
the wonderful 2.4 error handling ;-)

But then, all requests send down the last path will fail, because the target
is broken, not the path.

In short, multipathing doesn't help a bit here; how could it?

> Does this only work with raid-autodetection ?
> When no autodetection is done and a drive is missing, would a raidstart
> kill the raid, since the drives are now available with other devices (sda
> instead of former sdb...) ?

I don't understand your question, sorry.

Lars Marowsky-Brée <>

Immortality is an adequate definition of high availability for me.
--- Gregory F. Pfister

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:28    [W:0.098 / U:1.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site