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libceph: handle new osdmap down/state change encoding 

Old incrementals encode a 0 value (nearly always) when an osd goes down.
Change that to allow any state bit(s) to be flipped.  Special case 0 to
mean flip the CEPH_OSD_UP bit to mimic the old behavior.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2011-05-03 12:52:05 -07:00
parent 9db4b3e327
commit 7662d8ff57
1 changed files with 8 additions and 3 deletions
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11
net/ceph/osdmap.c
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@ -830,15 +830,20 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
map->osd_addr[osd] = addr;
}
/* new_down */
/* new_state */
ceph_decode_32_safe(p, end, len, bad);
while (len--) {
u32 osd;
u8 xorstate;
ceph_decode_32_safe(p, end, osd, bad);
xorstate = **(u8 **)p;
(*p)++; /* clean flag */
pr_info("osd%d down\n", osd);
if (xorstate == 0)
xorstate = CEPH_OSD_UP;
if (xorstate & CEPH_OSD_UP)
pr_info("osd%d down\n", osd);
if (osd < map->max_osd)
map->osd_state[osd] &= ~CEPH_OSD_UP;
map->osd_state[osd] ^= xorstate;
}
/* new_weight */