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dmeventd: (workaround) fix mirror DSO to work with lvmetad

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Automatic dmeventd repair of mirrors with active lvmetad configured
(mirror_image_fault_policy = "allocate") fails because the lvscan
run before the repair in the mirror DSO does not update the
lvmetad cache properly thus "lvconvert --repair ..." fails.

Need to scan the mirror LV before and after the repair
to have proper cache content after the repair finished.
The cache can't be relied on or the repair will fail.

Resolves: rhbz1380521
This commit is contained in:
Heinz Mauelshagen 2017-03-09 20:41:07 +01:00
parent 67ddc0c292
commit 76f6951c3e
1 changed files with 4 additions and 1 deletions
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5
daemons/dmeventd/plugins/mirror/dmeventd_mirror.c
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@ -111,6 +111,9 @@ static int _remove_failed_devices(const char *cmd_lvscan, const char *cmd_lvconv
return 0;
}
if (!dmeventd_lvm2_run_with_lock(cmd_lvscan))
log_warn("WARNING: Re-scan of mirrored device %s failed.", device);
log_info("Repair of mirrored device %s finished successfully.", device);
return 1;
@ -188,7 +191,7 @@ int register_device(const char *device,
goto_bad;
if (!dmeventd_lvm2_command(state->mem, state->cmd_lvconvert, sizeof(state->cmd_lvconvert),
"lvconvert --repair --use-policies", device))
"lvconvert --config global{use_lvmetad = 0}' --repair --use-policies", device))
goto_bad;
*user = state;