直接交给trae这种ai ide也可以，我的提示词如下：我的飞牛硬盘原本有两个3.6T的硬盘组成raid1、并配置了相应的固态缓存盘 repair.md 中记录了我在原始机器上的操作日志 backup-original.txt 中是我通过vgcfgbackup获取到的要修复的逻辑卷的VG的元数据；现在我的固态缓存盘丢失了，我想要移除要vg元数据中的额缓存盘信息，请帮我生成一份新的VG的元数据文件
修改前：
# Generated by LVM2 version 2.03.16(2) (2022-05-18): Fri Feb 13 21:23:06 2026
contents = "Text Format Volume Group"
version = 1
description = "vgcfgbackup -f ./backup-original.txt trim_6bafc2d3_adeb_4306_8fa1_95a46f3f675f"
creation_host = "hhsw-fn-nas" # Linux hhsw-fn-nas 6.12.18-trim #211 SMP PREEMPT_DYNAMIC Fri Jan 30 17:47:53 CST 2026 x86_64
creation_time = 1770988986 # Fri Feb 13 21:23:06 2026
trim_6bafc2d3_adeb_4306_8fa1_95a46f3f675f {
id = "oSudKo-3x6n-Ylpm-HE1D-REjY-94vd-cpKWNh"
seqno = 8
format = "lvm2" # informational
status = ["RESIZEABLE", "READ", "WRITE"]
flags = []
extent_size = 8192 # 4 Megabytes
max_lv = 0
max_pv = 0
metadata_copies = 0
physical_volumes {
pv0 {
id = "8Oldiq-LDBA-FcNg-0S04-zoud-Tadi-rsu3Zc"
device = "/dev/md125" # Hint only
status = ["ALLOCATABLE"]
flags = []
dev_size = 7813767168 # 3.63857 Terabytes
pe_start = 2048
pe_count = 953829 # 3.63857 Terabytes
}
pv1 {
id = "gMdkmp-YSem-Ym0a-6vSz-WL5H-gzxP-zT7jmJ"
device = "[unknown]" # Hint only
status = ["ALLOCATABLE"]
flags = ["MISSING"]
dev_size = 115439616 # 55.0459 Gigabytes
pe_start = 2048
pe_count = 14091 # 55.043 Gigabytes
}
}
logical_volumes {
0 {
id = "NqTXxA-8Twd-18fx-Hyls-l3kn-yctB-82GuhS"
status = ["READ", "WRITE", "VISIBLE"]
flags = []
creation_time = 1742639964 # 2025-03-22 18:39:24 +0800
creation_host = "HhswNasFn"
segment_count = 1
segment1 {
start_extent = 0
extent_count = 953829 # 3.63857 Terabytes
type = "cache"
cache_pool = "0cache_cpool"
origin = "0_corig"
}
}
lvol0_pmspare {
id = "vfIVIw-TDAe-9iEX-mxbX-pZ1H-7xvN-svrjnR"
status = ["READ", "WRITE"]
flags = []
creation_time = 1743300471 # 2025-03-30 10:07:51 +0800
creation_host = "HhswNasFn"
segment_count = 1
segment1 {
start_extent = 0
extent_count = 11 # 44 Megabytes
type = "striped"
stripe_count = 1 # linear
stripes = [
"pv1", 0
]
}
}
0cache_cpool {
id = "DexJzS-3WMG-xnB1-eyxa-mmJZ-l4Je-xDe1G9"
status = ["READ", "WRITE"]
flags = []
creation_time = 1743300471 # 2025-03-30 10:07:51 +0800
creation_host = "HhswNasFn"
segment_count = 1
segment1 {
start_extent = 0
extent_count = 14069 # 54.957 Gigabytes
type = "cache-pool+METADATA_FORMAT"
data = "0cache_cpool_cdata"
metadata = "0cache_cpool_cmeta"
metadata_format = 2
chunk_size = 128
cache_mode = "writeback"
policy = "smq"
}
}
0cache_cpool_cmeta {
id = "wUi5M2-Qw3s-hqf0-hjSC-jHxP-z03s-c0Qmb2"
status = ["READ", "WRITE"]
flags = []
creation_time = 1743300471 # 2025-03-30 10:07:51 +0800
creation_host = "HhswNasFn"
segment_count = 1
segment1 {
start_extent = 0
extent_count = 11 # 44 Megabytes
type = "striped"
stripe_count = 1 # linear
stripes = [
"pv1", 11
]
}
}
0cache_cpool_cdata {
id = "hcHkKY-PPpp-6lsW-helo-Pe5h-HWla-TQeTR2"
status = ["READ", "WRITE"]
flags = []
creation_time = 1743300471 # 2025-03-30 10:07:51 +0800
creation_host = "HhswNasFn"
segment_count = 1
segment1 {
start_extent = 0
extent_count = 14069 # 54.957 Gigabytes
type = "striped"
stripe_count = 1 # linear
stripes = [
"pv1", 22
]
}
}
0_corig {
id = "NjhGAB-YFkN-17hC-36Xy-uC82-paVk-fXQ7Lu"
status = ["READ", "WRITE"]
flags = []
creation_time = 1743300471 # 2025-03-30 10:07:51 +0800
creation_host = "HhswNasFn"
segment_count = 1
segment1 {
start_extent = 0
extent_count = 953829 # 3.63857 Terabytes
type = "striped"
stripe_count = 1 # linear
stripes = [
"pv0", 0
]
}
}
}
}
修改后
# Generated by LVM2 version 2.03.16(2) (2022-05-18): Fri Feb 13 21:30:00 2026
contents = "Text Format Volume Group"
version = 1
description = "Modified to remove missing cache PV and restore origin LV"
creation_host = "hhsw-fn-nas"
creation_time = 1770989400 # Fri Feb 13 21:30:00 2026
trim_6bafc2d3_adeb_4306_8fa1_95a46f3f675f {
id = "oSudKo-3x6n-Ylpm-HE1D-REjY-94vd-cpKWNh"
seqno = 9
format = "lvm2" # informational
status = ["RESIZEABLE", "READ", "WRITE"]
flags = []
extent_size = 8192 # 4 Megabytes
max_lv = 0
max_pv = 0
metadata_copies = 0
physical_volumes {
pv0 {
id = "8Oldiq-LDBA-FcNg-0S04-zoud-Tadi-rsu3Zc"
device = "/dev/md125" # Hint only
status = ["ALLOCATABLE"]
flags = []
dev_size = 7813767168 # 3.63857 Terabytes
pe_start = 2048
pe_count = 953829 # 3.63857 Terabytes
}
}
logical_volumes {
0 {
id = "NqTXxA-8Twd-18fx-Hyls-l3kn-yctB-82GuhS"
status = ["READ", "WRITE", "VISIBLE"]
flags = []
creation_time = 1742639964 # 2025-03-22 18:39:24 +0800
creation_host = "HhswNasFn"
segment_count = 1
segment1 {
start_extent = 0
extent_count = 953829 # 3.63857 Terabytes
type = "striped"
stripe_count = 1 # linear
stripes = [
"pv0", 0
]
}
}
}
}
最后，检查元数据一致性（可选、确定修改后的是否正确）
sudo vgcfgrestore -f /Users/hhsw/Documents/trae_projects/fn_storage/backup-repaired.txt --test trim_6bafc2d3_adeb_4306_8fa1_95a46f3f675f
正式恢复元数据
sudo vgcfgrestore -f /Users/hhsw/Documents/trae_projects/fn_storage/backup-repaired.txt trim_6bafc2d3_adeb_4306_8fa1_95a46f3f675f
激活卷组
sudo vgchange -ay trim_6bafc2d3_adeb_4306_8fa1_95a46f3f675f
2025-7-13 16:37:15
2025-7-13 16:49:26 楼主
我认为是缓存功能有BUG，缓存盘损坏了，无法快速删除缓存盘保留数据盘。
这要怎么操作。也是之前ssd只读缓存坏了，重新装了fnos。