Dmitry Pryanishnikov wrote:
Hello!
On Wed, 13 Dec 2006, Jan Mikkelsen wrote:
I mentioned that I have seen similar problems on machines with
ataraid, like this:
DOH! ata_alloc_composite failed! (x5)
FAILURE - out of memory in ata_raid_init_request (x6)
g_vfs_done():ar0s3f[WRITE(offset=113324673024, length=2048)]error = 5
These errors are caused by the kernel memory (specifically,
"ata_composite_zone" UMA zone) depletion. To get this knowlege, one
should Read The F[ine] Sources, as ata(4)/ataraid(4) lack the
DIAGNOSTICS section:
ata-all.h:#define ata_alloc_composite() uma_zalloc(ata_composite_zone,
M_NOWAIT | M_ZERO)
Sincerely, Dmitry
Not being able to perform an I/O due to lack of memory is a very bad
thing, since the way that memory is freed up is by doing I/O.
Scott
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