diff options
author | Vladimir Kobal <vlad@prokk.net> | 2021-03-24 11:23:31 +0200 |
---|---|---|
committer | GitHub <noreply@github.com> | 2021-03-24 11:23:31 +0200 |
commit | 1fc4dbbbc8948bbba63a98f30119f99331e97df8 (patch) | |
tree | 95a59afd67e82766f9e9dbd44e77cfa880d7d312 /collectors/proc.plugin/proc_diskstats.c | |
parent | a66e9ef6a7e99eb968a76074fd827b3da6d55da4 (diff) |
Check device names in diskstats plugin (#10843)
Diffstat (limited to 'collectors/proc.plugin/proc_diskstats.c')
-rw-r--r-- | collectors/proc.plugin/proc_diskstats.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/collectors/proc.plugin/proc_diskstats.c b/collectors/proc.plugin/proc_diskstats.c index 22224df8f4..b5d02f329d 100644 --- a/collectors/proc.plugin/proc_diskstats.c +++ b/collectors/proc.plugin/proc_diskstats.c @@ -17,6 +17,7 @@ static struct disk { char *disk; // the name of the disk (sda, sdb, etc, after being looked up) char *device; // the device of the disk (before being looked up) + uint32_t hash; unsigned long major; unsigned long minor; int sector_size; @@ -393,7 +394,7 @@ static inline int get_disk_name_from_path(const char *path, char *result, size_t continue; } - if(major(sb.st_rdev) != major || minor(sb.st_rdev) != minor) { + if(major(sb.st_rdev) != major || minor(sb.st_rdev) != minor || strcmp(basename(filename), disk)) { //info("DEVICE-MAPPER ('%s', %lu:%lu): filename '%s' does not match %lu:%lu.", disk, major, minor, filename, (unsigned long)major(sb.st_rdev), (unsigned long)minor(sb.st_rdev)); continue; } @@ -547,13 +548,17 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis struct disk *d; + uint32_t hash = simple_hash(disk); + // search for it in our RAM list. // this is sequential, but since we just walk through // and the number of disks / partitions in a system // should not be that many, it should be acceptable - for(d = disk_root; d ; d = d->next) - if(unlikely(d->major == major && d->minor == minor)) + for(d = disk_root; d ; d = d->next){ + if (unlikely( + d->major == major && d->minor == minor && d->hash == hash && !strcmp(d->device, disk))) return d; + } // not found // create a new disk structure @@ -561,6 +566,7 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis d->disk = get_disk_name(major, minor, disk); d->device = strdupz(disk); + d->hash = simple_hash(d->device); d->major = major; d->minor = minor; d->type = DISK_TYPE_UNKNOWN; // Default type. Changed later if not correct. @@ -627,12 +633,12 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis // check if we can find its mount point // mountinfo_find() can be called with NULL disk_mountinfo_root - struct mountinfo *mi = mountinfo_find(disk_mountinfo_root, d->major, d->minor); + struct mountinfo *mi = mountinfo_find(disk_mountinfo_root, d->major, d->minor, d->device); if(unlikely(!mi)) { // mountinfo_free_all can be called with NULL mountinfo_free_all(disk_mountinfo_root); disk_mountinfo_root = mountinfo_read(0); - mi = mountinfo_find(disk_mountinfo_root, d->major, d->minor); + mi = mountinfo_find(disk_mountinfo_root, d->major, d->minor, d->device); } if(unlikely(mi)) @@ -945,13 +951,6 @@ int do_proc_diskstats(int update_every, usec_t dt) { // I/O completion time and the backlog that may be accumulating. backlog_ms = str2ull(procfile_lineword(ff, l, 13)); // rq_ticks - - // -------------------------------------------------------------------------- - // remove slashes from disk names - char *s; - for(s = disk; *s ;s++) - if(*s == '/') *s = '_'; - // -------------------------------------------------------------------------- // get a disk structure for the disk |