求助，btrfs 变成 read-only

pikkaB · 2021年03月22日 05:51

用的最新的 tumbleweed，晚上突然发现文件系统变成只读的。

运行 btrfs check 反而得到 out of memory:

...................................很多类似的行
WARNING: tree block [1073987584, 1074003968) crosses 64K page boudnary, may cause problem for 64K page system
WARNING: tree block [1074053120, 1074069504) crosses 64K page boudnary, may cause problem for 64K page system
WARNING: tree block [1074118656, 1074135040) crosses 64K page boudnary, may cause problem for 64K page system
WARNING: tree block [1074184192, 1074200576) crosses 64K page boudnary, may cause problem for 64K page system
WARNING: tree block [1074249728, 1074266112) crosses 64K page boudnary, may cause problem for 64K page system
[3/7] checking free space cache
[4/7] checking fs roots
[5/7] checking only csums items (without verifying data)
[6/7] checking root refs
[7/7] checking quota groups
ERROR: out of memory
ERROR: Loading qgroups from disk: -2
ERROR: failed to check quota groups
found 71455006720 bytes used, error(s) found
total csum bytes: 63871560
total tree bytes: 3487645696
total fs tree bytes: 3292364800
total extent tree bytes: 109395968
btree space waste bytes: 640544373
file data blocks allocated: 276465897472
 referenced 221541310464
extent buffer leak: start 469499904 len 16384
extent buffer leak: start 404537344 len 16384

请问大家有没有线索这是怎么回事？怎么避免 btrfs check out of memory 呢？(电脑的内存是 32G 应该足够了)

pikkaB · 2021年03月22日 06:10

用 btrfs check --mode lowmem 试着跑了一下，还得到了：

[3/7] checking free space cache                (0:00:01 elapsed, 85 items checked)
ERROR: root 258 EXTENT_DATA[210543 4096] gap exists, expected: EXTENT_DATA[210543 256]

以及很多类似这样的错误：

ERROR: child eb corrupted: parent bytenr=108970246144 item=0 parent level=2 child bytenr=108950388736 child level=0
ERROR: root 1321 DIR ITEM[90577 3719653934] missing name ksycoca5_en_zzBTQGNOoeFvUqv9k8GEg3_R1HY= filetype 1
ERROR: root 1321 DIR INDEX[90577 4111] missing name ksycoca5_en_zzBTQGNOoeFvUqv9k8GEg3_R1HY= filetype 1
parent transid verify failed on 108950388736 wanted 93286 found 96893
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=108970246144 item=0 parent level=2 child bytenr=108950388736 child level=0
parent transid verify failed on 108950388736 wanted 93286 found 96893
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=108970246144 item=0 parent level=2 child bytenr=108950388736 child level=0
ERROR: root 1321 DIR ITEM[90556 1946503298] missing name history2.lst filetype 1
ERROR: root 1321 DIR INDEX[90556 22492] missing name history2.lst filetype 1
parent transid verify failed on 108950388736 wanted 93286 found 96893
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=108970246144 item=0 parent level=2 child bytenr=108950388736 child level=0
parent transid verify failed on 108950388736 wanted 93286 found 96893
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=108970246144 item=0 parent level=2 child bytenr=108950388736 child level=0
ERROR: root 1321 DIR ITEM[258 2670046935] missing name .bash_history filetype 1
ERROR: root 1321 DIR INDEX[258 2293] missing name .bash_history filetype 1
parent transid verify failed on 108950388736 wanted 93286 found 96893
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=108970246144 item=0 parent level=2 child bytenr=108950388736 child level=0
parent transid verify failed on 108950388736 wanted 93286 found 96893
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=108970246144 item=0 parent level=2 child bytenr=108950388736 child level=0
ERROR: root 1321 DIR ITEM[90568 3239139256] missing name konsolerc filetype 1
ERROR: root 1321 DIR INDEX[90568 16108] missing name konsolerc filetype 1
parent transid verify failed on 108950388736 wanted 93286 found 96893
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=108970246144 item=0 parent level=2 child bytenr=108950388736 child level=0
parent transid verify failed on 108950388736 wanted 93286 found 96893
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=108970246144 item=0 parent level=2 child bytenr=108950388736 child level=0
ERROR: root 1321 DIR ITEM[90577 1119642003] missing name plasma-svgelements filetype 1
ERROR: root 1321 DIR INDEX[90577 4114] missing name plasma-svgelements filetype 1

最后：

[4/7] checking fs roots                        (0:02:38 elapsed, 183840 items checked)
ERROR: errors found in fs roots
found 71461675008 bytes used, error(s) found
total csum bytes: 63871560
total tree bytes: 3487629312
total fs tree bytes: 3292348416
total extent tree bytes: 109395968
btree space waste bytes: 640535826
file data blocks allocated: 276465897472
 referenced 221541310464

slbtty · 2021年03月22日 06:54

先备份下重要数据，然后 btrfs check --repair？

pikkaB · 2021年03月22日 07:09

我也是这么想的，但是还是会出现之前 out of memory 的错，而 --mode lowmem 并不能用于 btrfs check --repair ：https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-check 呃

marguerite · 2021年03月22日 08:18

@pikkaB

先把 quota 禁用了再 check？

btrfs rescue disable-quota /dev/sdXXX

搜到的：https://www.spinics.net/lists/linux-btrfs/msg81169.html

pikkaB · 2021年03月22日 22:38

苏大人！试着编译运行了那个命令，但是依然会有 out of memory 的错误。看到一个类似的帖子 https://bbs.archlinux.org/viewtopic.php?id=233724 ，现在我在尝试运行 btrfsck --init-extent-tree

但是！已经过了好几个小时了还没结束我打算等它跑一周还没结束的话就 reformat 了

pikkaB · 2021年03月23日 22:00

最后 update 一下：btrfs check --init-extent-tree 跑了一天之后最后修正了问题~

system · 2021年03月24日 01:09

本主题在最后一个回复创建后60分钟后自动锁定。不再允许添加新回复。