| 2009-12-15 22:11:20 |
ceg |
bug |
|
|
added bug |
| 2010-03-07 16:39:13 |
ceg |
summary |
mdadm degrades all arrays (from initramfs) instead of just those required to boot |
initramfs' mdadm degrades all arrays (not just those required to boot) |
|
| 2010-03-07 16:51:23 |
ceg |
nominated for series |
|
Ubuntu Lucid |
|
| 2010-03-07 16:57:03 |
ceg |
description |
Binary package hint: mdadm
The dependencies are not checked, it looks into /proc/mdstat and uses "mdadm --assemble --scan --run".
(Additionaly a legacy non-hotplug command.)
The best way to fix the so many mdadm bugs is probably to adopt the event driven upstart/mountall init within intiramfs.
See https://wiki.ubuntu.com/ReliableRaid |
Binary package hint: mdadm
after a timeout mdadm in initrams degrades all arrays instead of just those required for the rootfs.
The dependencies are not checked and saved to initramfs. Instead the script just looks into /proc/mdstat and uses "mdadm --assemble --scan --run" starting all arrays, if some arrays are incomplete (very likely during initramfs state).
(Additionaly a legacy non-hotplug command.)
The best way to fix the so many mdadm bugs is probably to adopt the event driven upstart/mountall init within intiramfs.
See https://wiki.ubuntu.com/ReliableRaid
|
|
| 2010-03-29 16:36:53 |
ceg |
summary |
initramfs' mdadm degrades all arrays (not just those required to boot) |
initramfs' init-premount degrades *all* arrays (not just those required to boot) |
|
| 2010-03-29 16:55:24 |
ceg |
description |
Binary package hint: mdadm
after a timeout mdadm in initrams degrades all arrays instead of just those required for the rootfs.
The dependencies are not checked and saved to initramfs. Instead the script just looks into /proc/mdstat and uses "mdadm --assemble --scan --run" starting all arrays, if some arrays are incomplete (very likely during initramfs state).
(Additionaly a legacy non-hotplug command.)
The best way to fix the so many mdadm bugs is probably to adopt the event driven upstart/mountall init within intiramfs.
See https://wiki.ubuntu.com/ReliableRaid
|
After a timeout mdadm in initrams degrades all arrays instead of just those required for the rootfs.
This is not good since non-rootfs arrays are likely to be available only incompletely (due to the early stage during boot) and are getting desynced by this.
When creating the initramfs image the mdadm hook should determine the dependencies of the rootfilesystem and save a list of the required md devices in the initramfs.
Currently the initramfs boot script just looks for *any* available incomplete array and calls "mdadm --assemble --scan --run", which starts all runnable arrays.
--
The best way to fix the so many mdadm bugs is probably to adopt the event driven upstart/mountall init within intiramfs.
Bug #491463 upstart init within initramfs |
|
| 2010-03-29 17:16:30 |
ceg |
mdadm (Ubuntu): status |
New |
Confirmed |
|
| 2010-03-30 11:32:59 |
ceg |
description |
After a timeout mdadm in initrams degrades all arrays instead of just those required for the rootfs.
This is not good since non-rootfs arrays are likely to be available only incompletely (due to the early stage during boot) and are getting desynced by this.
When creating the initramfs image the mdadm hook should determine the dependencies of the rootfilesystem and save a list of the required md devices in the initramfs.
Currently the initramfs boot script just looks for *any* available incomplete array and calls "mdadm --assemble --scan --run", which starts all runnable arrays.
--
The best way to fix the so many mdadm bugs is probably to adopt the event driven upstart/mountall init within intiramfs.
Bug #491463 upstart init within initramfs |
After a timeout mdadm in initrams degrades all arrays instead of just those required for the rootfs.
This is not good since non-rootfs arrays are likely to be available only incompletely (due to the early stage during boot) and are getting desynced by this.
When creating the initramfs image the mdadm hook should determine the dependencies of the rootfilesystem and save a list of the required md devices in the initramfs.
See: How would you decide what device is needed? at https://wiki.ubuntu.com/ReliableRaid
Currently the initramfs boot script just looks for *any* available incomplete array and calls "mdadm --assemble --scan --run", which will start *all* runnable arrays.
---
comment #2 contains a workaround for the proper command to run single arrays degraded. |
|
