history/include/linux/raid, branch master

[PATCH] raid5 overlapping read hack

2005-02-07T23:47:54Z

If we detect an overlap, we set a flag and wait for a wakeup. When requests are handled, if the flag was set, we perform the wakeup. Note that the code currently in -mm is badly broken. With this patch applied, it passes tests the use O_DIRECT to cause lots of overlapping requests. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] md: improve 'hash' code in linear.c

2005-01-08T06:00:48Z

The hashtable that linear uses to find the right device stores two pointers for every entry. The second is always one of: The first plus 1 NULL When NULL, it is never accessed, so any value can be stored. Thus it could always be "first plus 1", and so we don't need to store it as it is trivial to calculate. This patch halves the size of this table, which results in some simpler code as well. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] md: "Faulty" personality

2004-11-11T05:49:10Z

The 'faulty' personality provides a layer over any block device in which errors may be synthesised. A variety of errors are possible including transient and persistent read and write errors, and read errors that persist until the next write. There error mode can be changed on a live array. Accessing this personality requires mdadm 2.8.0 or later. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] md: fix problem with md/linear for devices larger than 2 terabytes

2004-11-11T05:48:15Z

Some size fields were "int" instead of "sector_t". Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] md: fixes to make version-1 superblocks work in md driver

2004-10-25T11:13:38Z

Add some missing data_offset additions and some le_to_cpu convertions and fix a few other little mistakes. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] md: make retry_list non-global in raid1 and multipath

2004-10-25T11:11:34Z

Both raid1 and multipath have a "retry_list" which is global, so all raid1 arrays (for example) us the same list. This is rather ugly, and it is simple enough to make it per-array, so this patch does that. It also changes to multipath code to use list.h lists instead of roll-your-own. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] mark md_interrupt_thread static

2004-09-14T00:47:27Z

Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] md: RAID10 module

2004-08-24T04:29:06Z

This patch adds a 'raid10' module which provides features similar to both raid0 and raid1 in the one array. Various combinations of layout are supported. This code is still "experimental", but appears to work. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] md: assorted fixes/improvemnet to generic md resync code.

2004-08-24T04:28:31Z

1/ Introduce "mddev->resync_max_sectors" so that an md personality can ask for resync to cover a different address range than that of a single drive. raid10 will use this. 2/ fix is_mddev_idle so that if there seem to be a negative number of events, it doesn't immediately assume activity. 3/ make "sync_io" (the count of IO sectors used for array resync) an atomic_t to avoid SMP races. 4/ Pass md_sync_acct a "block_device" rather than the containing "rdev", as the whole rdev isn't needed. Also make this an inline function. 5/ Make sure recovery gets interrupted on any error. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] md: support reshaping raid1 arrays - adding or removing drives.

2004-06-05T03:56:50Z

This allows the number of "raid_disks" in a raid1 to be changed. This requires allocating a new pool of "r1bio" structures which a different number of bios, suspending IO, and swapping the new pool in place of the old. (and a few other related changes). Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds