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b5b0369e4d
When a device id is set for a device, using an idtype other than devname, it means that sysfs has been used with the device to match the device id. So, checking for a sysfs entry for the device in filter-sysfs is redundant. For any other cases not covered by this (e.g. devname ids), have filter-sysfs simply stat /sys/dev/block/major:minor to test if the device exists in sysfs. The extensive processing done by filter-sysfs init is removed. It was taking an immense amount of time with many devices, e.g. . 1024 PVs in 520 VGs . 520 concurrent vgchange -ay <vgname> commands . vgchange scans only PVs in the named VG (based on pvs_online files from a pending patch) A large number of the vgchange commands were taking over 1 min, and nearly half of that time was used by filter-sysfs init. With this patch, the vgchange commands take about half the time. |
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| .. | ||
| activate | ||
| cache | ||
| cache_segtype | ||
| commands | ||
| config | ||
| datastruct | ||
| device | ||
| display | ||
| error | ||
| filters | ||
| format_text | ||
| freeseg | ||
| integrity | ||
| label | ||
| locking | ||
| log | ||
| lvmpolld | ||
| metadata | ||
| mirror | ||
| misc | ||
| mm | ||
| notify | ||
| properties | ||
| raid | ||
| report | ||
| snapshot | ||
| striped | ||
| thin | ||
| unknown | ||
| uuid | ||
| vdo | ||
| writecache | ||
| zero | ||
| Makefile.in | ||