kernel software raid support
What is the status of software raid development in 2.2.x?
There seems to be a growing number of hacks addressing kernel raid support, tools, and such specifics as read balancing, yet the kernel contains very old code for raid support which seems to act as nothing more than a placeholder for patching.
Would anybody happen to have a current list of working patches for a decent implementation of software raid1 using the 2.2.18 kernel that employs some level of read performance that exceeds that of 1 harddisk?
Regards,
Charles
Quoted 3 lines · In article <[email protected]> you wrote:
Would anybody happen to have a current list of working patches for a decent implementation of software raid1 using the 2.2.18 kernel that employs some level of read performance that exceeds that of 1 harddisk?
This may seem odd, but it is actually not possible to get a sequential read performance > 1 harddisk with RAID1 for single-threaded ussage patterns, given the current on-disk structures.
I have a hack in my (2.4) tree that works around this limitation, but the on-disk format is incompatible with the stock kernel, so it is no candidate for inclusion...
Greetings,
Arjan van de Ven
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