我有一個本地伺服器，其中包含供本地電腦備份內容的共用。
伺服器有一個備份使用者(1002:1002)。
用戶端的使用者 alex(1000:1000) 也在該電腦上的 backupuser(1002) 群組中。
為了查找錯誤，我在程式碼片段中以備份使用者身分登入。
有時（使用 chmod 777）我可以使用 nano 編輯測試文件，有時則不能，有時第二次嘗試即可工作。所以這裡肯定有什麼可疑之處。
該計劃是為了讓用戶 alex 能夠完全存取資料夾 snapraid_ignored 的內容。
伺服器運行 Proxmox，客戶端運行 Antergos Gnome。
伺服器/etc/exports
/home/fileserver/storagepool 192.168.1.24(fsid=1,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/home/fileserver/storagepool 192.168.1.24(fsid=1,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/home/fileserver/storagepool/kodi 192.168.1.24(fsid=2,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/home/fileserver/storagepool/Upload 192.168.1.24(fsid=3,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/media/pool/disk6/Seafile 192.168.1.24(fsid=4,async,rw,no_subtree_check,all_squash,anonuid=1007,anongid=1000)
/home/fileserver/storagepool/test 192.168.1.24(fsid=5,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/home/fileserver/storagepool/music 192.168.1.24(fsid=6,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/home/fileserver/snapraid_logs 192.168.1.24(fsid=7,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/media/pool/disk1 192.168.1.24(fsid=8,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/media/pool/disk2 192.168.1.24(fsid=9,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/media/pool/disk3 192.168.1.24(fsid=10,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/media/pool/disk4 192.168.1.24(fsid=11,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/media/pool/disk5 192.168.1.24(fsid=12,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/media/pool/disk6 192.168.1.24(fsid=13,async,rw,no_subtree_check,all_squash,anonuid=1000,anongid=1000)
/home/fileserver/storagepool/Backups_external/snapraid_ignored 192.168.1.24(fsid=14,async,rw,no_subtree_check,all_squash,anonuid=1002,anongid=1002)
#/home/fileserver/storagepool/Backups_external/snapraid_ignored 192.168.1.24(fsid=14,async,rw,no_subtree_check)
/home/fileserver/storagepool/surveillance 192.168.1.24(fsid=15,async,rw,no_subtree_check,all_squash,anonuid=1001,anongid=1000)
客戶/etc/autofs/auto.master
/nfs /etc/autofs/auto.myshares --ghost
/nfs/rpiradio /etc/autofs/auto.rpiradio --ghost
/nfs/torrent /etc/autofs/auto.torrent --ghost
/nfs/proxmox /etc/autofs/auto.proxmox --ghost
/nfs/terraria /etc/autofs/auto.terraria --ghost
/nfs/web14 /etc/autofs/auto.web14 --ghost
/nfs/web16 /etc/autofs/auto.web16 --ghost
/nfs/quake /etc/autofs/auto.quake --ghost
/net -hosts
+dir:/etc/autofs/auto.master.d
+auto.master
客戶/etc/autofs/auto.proxmox
kodi -rw,soft,intr,rsize=8192,wsize=8192 192.168.1.10:/home/fileserver/storagepool/kodi
test -rw,soft,intr,rsize=8192,wsize=8192 192.168.1.10:/home/fileserver/storagepool/test
music -rw,soft,intr,rsize=8192,wsize=8192 192.168.1.10:/home/fileserver/storagepool/music
upload -rw,soft,intr,rsize=8192,wsize=8192 192.168.1.10:/home/fileserver/storagepool/Upload
backup -rw,soft,intr,rsize=8192,wsize=8192 192.168.1.10:/home/fileserver/storagepool/Backups_external/snapraid_ignored
homeassistant -rw,soft,intr,rsize=8192,wsize=8192 192.168.1.10:/home/homeassistant
surveillance -rw,soft,intr,rsize=8192,wsize=8192 192.168.1.10:/home/fileserver/storagepool/surveillance
seafile -rw,soft,intr,rsize=8192,wsize=8192 192.168.1.10:/media/pool/disk6/Seafile
snapraid_logs -rw,soft,intr,rsize=8192,wsize=8192 192.168.1.10:/home/fileserver/snapraid_logs
伺服器:
root@pve:/home/fileserver/storagepool/Backups_external/snapraid_ignored# id backupuser
uid=1002(backupuser) gid=1002(backupuser) groups=1002(backupuser)
root@pve:/home/fileserver/storagepool/Backups_external/snapraid_ignored# ls -l
total 20
drwxrwxr-x 9 backupuser backupuser 4096 Jul 24 2016 Alex Dator
drwxrwxr-x 3 backupuser backupuser 4096 Jul 18 15:27 piRadio
drwxrwxr-x 3 backupuser backupuser 4096 Jul 18 15:37 Tbox
-rwxrwxr-x 1 backupuser backupuser 2 Aug 7 17:24 test
drwxrwxr-x 4 backupuser backupuser 4096 Oct 20 2017 Ubuntu
客戶：
[backupuser@AlexStora backup]$ id backupuser
uid=1002(backupuser) gid=1002(backupuser) grupper=1002(backupuser),998(wheel)
[backupuser@AlexStora backup]$ id alex
uid=1000(alex) gid=985(users) grupper=985(users),1002(backupuser)
[backupuser@AlexStora backup]$ ls -l
totalt 20
drwxrwxr-x 9 backupuser backupuser 4096 24 jul 2016 'Alex Dator'
drwxrwxr-x 3 backupuser backupuser 4096 18 jul 15.27 piRadio
drwxrwxr-x 3 backupuser backupuser 4096 18 jul 15.37 Tbox
-rwxrwxrwx 1 backupuser backupuser 3 7 aug 18.24 test
drwxrwxr-x 4 backupuser backupuser 4096 20 okt 2017 Ubuntu
[backupuser@AlexStora backup]$ mv test test2
mv: kan inte flytta 'test' till 'test2': Åtkomst nekas
[backupuser@AlexStora backup]$ mkdir testfolder
mkdir: kan inte skapa katalog ”testfolder”: Åtkomst nekas
我通過嘗試使用 nano 編輯測試文件或嘗試使用mv.
A類似的問題這裡建議嘗試使用 lsattr：
root@pve:/home/fileserver/storagepool/Backups_external/snapraid_ignored# lsattr
--------------e---- ./Ubuntu
--------------e---- ./piRadio
--------------e---- ./Tbox
--------------e---- ./test
--------------e---- ./Alex Dator
編輯
當我 ssh 到我的 Raspberry Pi 時效果很好，我可以在共享上新增和編輯。我在/etc/fstab.
192.168.1.10:/home/fileserver/storagepool/Backups_external/snapraid_ignored /media/backup_on_server nfs _netdev,auto,noatime,nolock,bg,intr,tcp,actimeo=1800 0 0
在 Raspberry Pi 上，我沒有備份用戶，我以用戶 pi 的身份執行所有操作。
所以我在我試圖讓它工作的機器上做了同樣的事情。我在 fstab 中新增了相同的行。我還刪除了 backupuser 使用者和群組，並將自己從中刪除。
這沒有什麼區別。
答案1
我不確定為什麼它有效，但將所有權更改/home/fileserver/storagepool/Backups_external/為 backupuser:fileserver （而不是 backupuser:backupuser）有效。我現在可以從我的電腦新增、刪除和編輯伺服器上的檔案。