我想使用 rsync 將資料從網頁伺服器備份到 Truenas。網路伺服器執行 Debian 11，Truenas 版本為 12.0-U5 備份使用 Restic 以加密格式儲存在網路伺服器上。由於它已經加密，我想直接使用 rsync 以避免 ssh 開銷。
當我使用時，Debian rsync 的版本為 3.2.3，Truenas 的版本為 3.1.3
rsync -rdt rsync://rsync@truenas
我偶爾會被同伴重置連接
rsync: [Receiver] safe_read failed to read 1 bytes: Connection reset by peer (104)
rsync error: error in rsync protocol data stream (code 12) at io.c(276) [Receiver=3.2.3]
這種情況發生大約 3、4 或 5 次，然後傳輸就會起作用。
rsync -rdt rsync://rsync@truenas
web_backup
db_backup
我啟動了 tcpdump 看看會發生什麼。客戶端始終發送相同的字串，但 truenas 的 rsync 有時會回應，有時會重置連接（[R]-Flag）：
轉帳成功：
12:26:44.035035 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 66)
truenas.873 > webserver.58482: Flags [P.], cksum 0x2e81 (correct), seq 1:15, ack 15, win 1027, options [nop,nop,TS val 2820912976 ecr 2728215840], length 14
E..B..@[email protected]...:.c...........
.#.P..E @RSYNCD: 31.0
12:26:44.035098 IP (tos 0x0, ttl 63, id 53872, offset 0, flags [DF], proto TCP (6), length 52)
webserver.58482 > truenas.873: Flags [.], cksum 0xd829 (correct), ack 15, win 502, options [nop,nop,TS val 2728215841 ecr 2820912976], length 0
E..4.p@.?.....n......r.i.:.c.y.......).....
..E!.#.P
12:26:44.035127 IP (tos 0x0, ttl 63, id 53873, offset 0, flags [DF], proto TCP (6), length 53)
webserver.58482 > truenas.873: Flags [P.], cksum 0xce20 (correct), seq 15:16, ack 15, win 502, options [nop,nop,TS val 2728215841 ecr 2820912976], length 1
E..5.q@.?.....n......r.i.:.c.y....... .....
..E!.#.P
12:26:44.035218 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 69)
truenas.873 > webserver.58482: Flags [P.], cksum 0x56b7 (correct), seq 15:32, ack 16, win 1027, options [nop,nop,TS val 2820912976 ecr 2728215841], length 17
E..E..@[email protected]...:.d....V......
.#.P..E!web_backup
12:26:44.035226 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 83)
truenas.873 > webserver.58482: Flags [FP.], cksum 0xa8e8 (correct), seq 32:63, ack 16, win 1027, options [nop,nop,TS val 2820912976 ecr 2728215841], length 31
E..S..@.@..?......n..i.r.y.!.:.d...........
.#.P..E!db_backup
@RSYNCD: EXIT
傳輸失敗：
12:26:50.724628 IP (tos 0x0, ttl 63, id 469, offset 0, flags [DF], proto TCP (6), length 66)
webserver.58532 > truenas.873: Flags [P.], cksum 0x98eb (correct), seq 1:15, ack 1, win 502, options [nop,nop,TS val 2728222530 ecr 633812564], length 14
E..B..@.?..{..n........iB.'.M..............
.._B%.6T@RSYNCD: 31.0
12:26:50.724972 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 40)
truenas.873 > webserver.58532: Flags [R], cksum 0x43ae (correct), seq 1292349879, win 0, length 0
E..(..@[email protected].........
12:26:50.725398 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 66)
truenas.873 > webserver.58532: Flags [P.], cksum 0x96d0 (correct), seq 1:15, ack 15, win 1027, options [nop,nop,TS val 633812564 ecr 2728222530], length 14
E..B..@[email protected].'............
%.6T.._B@RSYNCD: 31.0
12:26:50.725470 IP (tos 0x0, ttl 63, id 0, offset 0, flags [DF], proto TCP (6), length 40)
webserver.58532 > truenas.873: Flags [R], cksum 0xd85b (correct), seq 1123821333, win 0, length 0
E..(..@.?..j..n........iB.'.....P....[..
Truenas 日誌不顯示任何其他內容：
Sep 3 12:26:44 truenas 1 2021-09-03T12:26:44.030844+02:00 truenas.local rsyncd 10028 - - connect from UNDETERMINED (webserver)
Sep 3 12:26:44 truenas 1 2021-09-03T12:26:44.031075+02:00 truenas.local rsyncd 10028 - - module-list request from UNDETERMINED (webserver)
Sep 3 12:26:50 truenas 1 2021-09-03T12:26:50.721209+02:00 truenas.local rsyncd 10032 - - connect from UNDETERMINED (webserver)
Sep 3 12:26:50 truenas 1 2021-09-03T12:26:50.721447+02:00 truenas.local rsyncd 10032 - - rsync: safe_read failed to read 1 bytes [Receiver]: Connection reset by peer (54)
Sep 3 12:26:50 truenas 1 2021-09-03T12:26:50.721476+02:00 truenas.local rsyncd 10032 - - rsync error: error in rsync protocol data stream (code 12) at io.c(276) [Receiver=3.1.3]
這裡發生了什麼事？
答案1
嘗試在您的 debian 上使用舊的且相同版本的 rsync (舊穩定）。因為TrueNAS-13.1-RELEASE使用rsync版本3.1.3協定版本31。似乎支援 FreeBSD ACL 的最新版本 (202112)。也rsync 當前問題和調試。