This pull request fixes an issue that corrupted omaps. It also
finds and repairs them. However, the repair process might
resurrect deleted omaps which would show up as an omap digest
error.
This could temporarily cause additional inconsistent PGs. So if
this has NOT been occurring longer than your deep-scrub interval
since upgrading, I'd repair the pgs and monitor going forward to
make sure the problem doesn't recur.
.dir.default.292886573.13181.12 only has a omap_digest_mismatch
and no shard errors. The automatic repair won't be sure which is
a good copy.
In this case we can see that osd 1327 doesn't match the other
two. To assist the repair process to repair the right one.
Remove the copy on osd.1327
Stop osd 1327 and use "ceph-objectstore-tool --data-path
.....1327 .dir.default.292886573.13181.12 remove"
.dir.default.64449186.344176 has selected_object_info with "od
337cf025" so shards have "omap_digest_mismatch_oi" except for osd
990.
The pg repair code will use osd.990 to fix the other 2 copies
without further handling.
On 9/8/17 11:16 AM, Robin H. Johnson
wrote:
On Thu, Sep 07, 2017 at 08:24:04PM +0000, Robin H. Johnson wrote:
pg 5.3d40 is active+clean+inconsistent, acting [1322,990,655]
pg 5.f1c0 is active+clean+inconsistent, acting [631,1327,91]
Here is the output of 'rados list-inconsistent-obj' for the PGs:
$ sudo rados list-inconsistent-obj 5.f1c0 |json_pp -json_opt canonical,pretty
{
"epoch" : 1221254,
"inconsistents" : [
{
"errors" : [
"omap_digest_mismatch"
],
"object" : {
"locator" : "",
"name" : ".dir.default.292886573.13181.12",
"nspace" : "",
"snap" : "head",
"version" : 483490
},
"selected_object_info" : "5:038f1cff:::.dir.default.292886573.13181.12:head(1221843'483490 client.417313345.0:19515832 dirty|omap|data_digest s 0 uv 483490 dd ffffffff alloc_hint [0 0])",
"shards" : [
{
"data_digest" : "0xffffffff",
"errors" : [],
"omap_digest" : "0x928b0c0b",
"osd" : 91,
"size" : 0
},
{
"data_digest" : "0xffffffff",
"errors" : [],
"omap_digest" : "0x928b0c0b",
"osd" : 631,
"size" : 0
},
{
"data_digest" : "0xffffffff",
"errors" : [],
"omap_digest" : "0x6556c868",
"osd" : 1327,
"size" : 0
}
],
"union_shard_errors" : []
}
]
}
$ sudo rados list-inconsistent-obj 5.3d40 |json_pp -json_opt canonical,pretty
{
"epoch" : 1210895,
"inconsistents" : [
{
"errors" : [
"omap_digest_mismatch"
],
"object" : {
"locator" : "",
"name" : ".dir.default.64449186.344176",
"nspace" : "",
"snap" : "head",
"version" : 1177199
},
"selected_object_info" : "5:02bc4def:::.dir.default.64449186.344176:head(1177700'1180639 osd.1322.0:537914 dirty|omap|data_digest|omap_digest s 0 uv 1177199 dd ffffffff od 337cf025 alloc_hint [0 0])",
"shards" : [
{
"data_digest" : "0xffffffff",
"errors" : [
"omap_digest_mismatch_oi"
],
"omap_digest" : "0x3242b04e",
"osd" : 655,
"size" : 0
},
{
"data_digest" : "0xffffffff",
"errors" : [],
"omap_digest" : "0x337cf025",
"osd" : 990,
"size" : 0
},
{
"data_digest" : "0xffffffff",
"errors" : [
"omap_digest_mismatch_oi"
],
"omap_digest" : "0xc90d06a8",
"osd" : 1322,
"size" : 0
}
],
"union_shard_errors" : [
"omap_digest_mismatch_oi"
]
}
]
}
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