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mdadm
0148-Get-failed-disk-count-from-array-state.patch
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File 0148-Get-failed-disk-count-from-array-state.patch of Package mdadm
From b13b52c80f3d9e3184ea1d6d39aa7053ef7bae49 Mon Sep 17 00:00:00 2001 From: Tomasz Majchrzak <tomasz.majchrzak@intel.com> Date: Wed, 31 May 2017 12:46:57 +0200 Subject: [PATCH] Get failed disk count from array state Git-commit: b13b52c80f3d9e3184ea1d6d39aa7053ef7bae49 Patch-mainline: mdadm-4.0+ References: bsc#1069165, bsc#1069167, bsc#1068030 Recent commit has changed the way failed disks are counted. It breaks recovery for external metadata arrays as failed disks are not part of the array and have no corresponding entries is sysfs (they are only reported for containers) so degraded arrays show no failed disks. Recent commit overwrites GET_DEGRADED result prior to GET_STATE and it is not set again if GET_STATE has not been requested. As GET_STATE provides the same information as GET_DEGRADED, the latter is not needed anymore. Remove GET_DEGRADED option and replace it with GET_STATE option. Don't count number of failed disks looking at sysfs entries but calculate it at the end. Do it only for arrays as containers report no disks, just spares. Signed-off-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com> Signed-off-by: Jes Sorensen <jsorensen@fb.com> Signed-off-by: Coly Li <colyli@suse.de> --- Incremental.c | 14 ++++---------- Monitor.c | 4 ++-- managemon.c | 4 ++-- mdadm.h | 1 - raid6check.c | 2 +- sysfs.c | 18 ++++++++---------- 6 files changed, 17 insertions(+), 26 deletions(-) diff --git a/Incremental.c b/Incremental.c index 30dc7a2..6cf2174 100644 --- a/Incremental.c +++ b/Incremental.c @@ -886,16 +886,10 @@ static int array_try_spare(char *devname, int *dfdp, struct dev_policy *pol, } sra = sysfs_read(-1, mp->devnm, GET_DEVS|GET_OFFSET|GET_SIZE|GET_STATE| - GET_DEGRADED|GET_COMPONENT|GET_VERSION); - if (!sra) { - /* Probably a container - no degraded info */ - sra = sysfs_read(-1, mp->devnm, - GET_DEVS|GET_OFFSET|GET_SIZE|GET_STATE| - GET_COMPONENT|GET_VERSION); - if (sra) - sra->array.failed_disks = -1; - } - if (!sra) + GET_COMPONENT|GET_VERSION); + if (sra) + sra->array.failed_disks = -1; + else continue; if (st == NULL) { int i; diff --git a/Monitor.c b/Monitor.c index 725f47d..bef2f1b 100644 --- a/Monitor.c +++ b/Monitor.c @@ -485,8 +485,8 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat, if (st->devnm[0] == 0) strcpy(st->devnm, fd2devnm(fd)); - sra = sysfs_read(-1, st->devnm, GET_LEVEL | GET_DISKS | GET_DEGRADED | - GET_MISMATCH | GET_DEVS | GET_STATE); + sra = sysfs_read(-1, st->devnm, GET_LEVEL | GET_DISKS | GET_MISMATCH | + GET_DEVS | GET_STATE); if (!sra) goto disappeared; diff --git a/managemon.c b/managemon.c index a8df666..68f0c2d 100644 --- a/managemon.c +++ b/managemon.c @@ -685,8 +685,8 @@ static void manage_new(struct mdstat_ent *mdstat, mdi = sysfs_read(-1, mdstat->devnm, GET_LEVEL|GET_CHUNK|GET_DISKS|GET_COMPONENT| - GET_DEGRADED|GET_SAFEMODE| - GET_DEVS|GET_OFFSET|GET_SIZE|GET_STATE|GET_LAYOUT); + GET_SAFEMODE|GET_DEVS|GET_OFFSET|GET_SIZE|GET_STATE| + GET_LAYOUT); if (!mdi) return; diff --git a/mdadm.h b/mdadm.h index ec0a39e..ee9b837 100644 --- a/mdadm.h +++ b/mdadm.h @@ -637,7 +637,6 @@ enum sysfs_read_flags { GET_MISMATCH = (1 << 5), GET_VERSION = (1 << 6), GET_DISKS = (1 << 7), - GET_DEGRADED = (1 << 8), GET_SAFEMODE = (1 << 9), GET_BITMAP_LOCATION = (1 << 10), diff --git a/raid6check.c b/raid6check.c index 551f835..a8e6005 100644 --- a/raid6check.c +++ b/raid6check.c @@ -562,7 +562,7 @@ int main(int argc, char *argv[]) GET_LEVEL| GET_LAYOUT| GET_DISKS| - GET_DEGRADED | + GET_STATE | GET_COMPONENT| GET_CHUNK| GET_DEVS| diff --git a/sysfs.c b/sysfs.c index e47f5e4..78d2b52 100644 --- a/sysfs.c +++ b/sysfs.c @@ -162,18 +162,12 @@ struct mdinfo *sysfs_read(int fd, char *devnm, unsigned long options) goto abort; sra->array.layout = strtoul(buf, NULL, 0); } - if (options & GET_DISKS) { + if (options & (GET_DISKS|GET_STATE)) { strcpy(base, "raid_disks"); if (load_sys(fname, buf, sizeof(buf))) goto abort; sra->array.raid_disks = strtoul(buf, NULL, 0); } - if (options & GET_DEGRADED) { - strcpy(base, "degraded"); - if (load_sys(fname, buf, sizeof(buf))) - goto abort; - sra->array.failed_disks = strtoul(buf, NULL, 0); - } if (options & GET_COMPONENT) { strcpy(base, "component_size"); if (load_sys(fname, buf, sizeof(buf))) @@ -359,10 +353,9 @@ struct mdinfo *sysfs_read(int fd, char *devnm, unsigned long options) strcpy(dbase, "state"); if (load_sys(fname, buf, sizeof(buf))) goto abort; - if (strstr(buf, "faulty")) { + if (strstr(buf, "faulty")) dev->disk.state |= (1<<MD_DISK_FAULTY); - sra->array.failed_disks++; - } else { + else { sra->array.working_disks++; if (strstr(buf, "in_sync")) { dev->disk.state |= (1<<MD_DISK_SYNC); @@ -379,6 +372,11 @@ struct mdinfo *sysfs_read(int fd, char *devnm, unsigned long options) dev->errors = strtoul(buf, NULL, 0); } } + + if ((options & GET_STATE) && sra->array.raid_disks) + sra->array.failed_disks = sra->array.raid_disks - + sra->array.active_disks - sra->array.spare_disks; + closedir(dir); return sra; -- 2.13.6
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