Re: btrfs restore
From: Mihail Zaporozhets <hidden>
Date: 2014-08-22 08:39:25
Marc MERLIN <marc <at> merlins.org> writes:
quoted hunk ↗ jump to hunk
On Thu, Aug 21, 2014 at 05:52:01AM +0000, Mihail Zaporozhets wrote:quoted
# btrfs-zero-log /dev/sda1 warning devid 5 not found already Check tree block failed, want=16845270495232, have=0 read block failed check_tree_block Couldn't read tree rootYou may be hitting the same problem I was a week back. See the thread that says "btrfs-zero-log fails, can't mount FS" Download the source for btrfs-progs, and apply this patch from Chris:diff --git a/disk-io.c b/disk-io.c index 8db0335..d9a8e19 100644 --- a/disk-io.c +++ b/disk-io.c <at> <at> -911,13 +911,13 <at> <at> int btrfs_setup_all_roots(struct
btrfs_fs_info *fs_info, u64 root_tree_bytenr,
return -EIO;
}
fs_info->csum_root->track_dirty = 1;
-
+#if 0
ret = find_and_setup_log_root(root, fs_info, sb);
if (ret) {
printk("Couldn't setup log root tree\n");
return -EIO;
}
-
+#endif
fs_info->generation = generation;
fs_info->last_trans_committed = generation;
if (extent_buffer_uptodate(fs_info->extent_root->node) &&
Or if you're desparate and want a binary, I'll Email you one directly
(not that you should run a binary you got from someone via Email as
root, so it's only if you're desperate)
Marc
Thanks for answers.
ok,
git clone git://repo.or.cz/btrfs-progs-unstable/devel.git;
make;
Do I need to patch devel's version, or it contains this changes? if no:
sudo ./btrfs-zero-log /dev/sda1
warning devid 5 not found already
Check tree block failed, want=16845270495232, have=0
read block failed check_tree_block
Couldn't read tree root
sudo btrfs-debug-tree -R /dev/sda1
warning devid 5 not found already
Check tree block failed, want=16845270495232, have=0
read block failed check_tree_block
Couldn't read tree root
sudo ./btrfs-show-super /dev/sda1
superblock: bytenr=65536, device=/dev/sda1
---------------------------------------------------------
csum 0x9867082d [match]
bytenr 65536
flags 0x1
magic _BHRfS_M [match]
fsid 841f1b5c-adb2-485f-a4cf-83bbf880dced
label
generation 59176
root 16845270495232
sys_array_size 97
chunk_root_generation 59166
root_level 2
chunk_root 11409648779264
chunk_root_level 2
log_root 0
log_root_transid 0
log_root_level 0
total_bytes 10001983041536
bytes_used 9997613580288
sectorsize 4096
nodesize 4096
leafsize 4096
stripesize 4096
root_dir 6
num_devices 5
compat_flags 0x0
compat_ro_flags 0x0
incompat_flags 0x1
csum_type 0
csum_size 4
cache_generation 59176
uuid_tree_generation 59176
dev_item.uuid 1ef01e06-b355-4a17-a2c8-5623188813f9
dev_item.fsid 841f1b5c-adb2-485f-a4cf-83bbf880dced [match]
dev_item.type 0
dev_item.total_bytes 2000397885440
dev_item.bytes_used 1999324119040
dev_item.io_align 4096
dev_item.io_width 4096
dev_item.sector_size 4096
dev_item.devid 1
dev_item.dev_group 0
dev_item.seek_speed 0
dev_item.bandwidth 0
dev_item.generation 0
./btrfs --version
Btrfs v3.14.2
last dmesg :
[110290.284290] show_signal_msg: 174 callbacks suppressed
[110290.284294] btrfs-debug-tre[6014]: segfault at e0 ip 00000000004022b0 sp
00007fffcb77d1d0 error 4 in btrfs-debug-tree[400000+27000]
[111278.465863] btrfs-debug-tre[10907]: segfault at e0 ip 00000000004022b0
sp 00007fff856c6bd0 error 4 in btrfs-debug-tree[400000+27000]
sudo ./btrfs rescue chunk-recover -v /dev/sda1
All Devices:
Device: id = 4, name = /dev/sde1
Device: id = 3, name = /dev/sdd1
Device: id = 2, name = /dev/sdc1
Device: id = 1, name = /dev/sda1
still waiting....
I started this before write to mail list, but, as i remember, my pc after
one night stay fully freeze, and had no reaction for anyone keys, and I
just reboot it at that time.
Nothing changes until this moment...