Chúng tôi đã có một lỗi đĩa trong một máy chủ và thay thế nó trước khi loại bỏ ổ đĩa khỏi LVM.
Máy chủ có 4 ổ đĩa vật lý (PV), mỗi ổ có nhóm âm lượng riêng (VG). Mỗi VG có 2 hoặc nhiều khối lượng logic (LV's.) Bây giờ LVM đang phàn nàn về ổ đĩa bị thiếu. Vì vậy, chúng tôi có một VG (vg04) với hai LV đã trở thành trẻ mồ côi hơn chúng tôi cần phải loại bỏ khỏi hệ thống.
Vấn đề là mỗi khi chúng tôi chạy bất kỳ lệnh LVM nào, chúng tôi đều nhận được các lỗi 'đọc thất bại' này:
# lvscan
/dev/vg04/swap: read failed after 0 of 4096 at 4294901760: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 4294959104: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 0: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 4096: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 995903864832: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 995903922176: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 0: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 4096: Input/output error
# vgreduce vg04 --removemissing --force
/dev/vg04/swap: read failed after 0 of 4096 at 4294901760: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 4294959104: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 0: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 4096: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 995903864832: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 995903922176: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 0: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 4096: Input/output error
Volume group "vg04" not found
# vgchange -a n /dev/vg04
/dev/vg04/swap: read failed after 0 of 4096 at 4294901760: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 4294959104: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 0: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 4096: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 995903864832: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 995903922176: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 0: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 4096: Input/output error
Volume group "vg04" not found
# lvchange -a n /dev/vg04/vz
/dev/vg04/swap: read failed after 0 of 4096 at 4294901760: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 4294959104: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 0: Input/output error
/dev/vg04/swap: read failed after 0 of 4096 at 4096: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 995903864832: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 995903922176: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 0: Input/output error
/dev/vg04/vz: read failed after 0 of 4096 at 4096: Input/output error
Volume group "vg04" not found
Skipping volume group vg04
Việc thiếu VG và LV không quan trọng, chúng tôi chỉ muốn loại bỏ chúng.
Như bạn có thể thấy, chúng tôi đã thử tất cả các đề xuất được đưa ra, cho đến nay không gặp may mắn.
Đầu ra từ 'lvm dumpconfig' có thể được kiểm tra tại http://pastebin.com/MHiBzrLJ