Hey List,
I have a raid10 on a rockstor machine (centOS based "4.3.3-1.el7.elrepo.x86_64“) where one drive threw SMART errors.
So I tried to replace them.
1. mount in degraded worked
2. start replace with the new drive (btrfs replace start 4 /dev/sdf /mnt2/pool_name) worked fine first too
3. shutdown (from shutdown command and then after some minutes power off since it doesn’t happen anything anymore)
4. I can’t mount anymore and restart the procedure
here some logs:
[root@rockstor ~]# dmesg | tail
[ 2039.773261] BTRFS info (device sde): btrfs: use no compression
[ 2039.773265] BTRFS info (device sde): disk space caching is enabled
[ 2039.773266] BTRFS: has skinny extents
[ 2039.775221] BTRFS: failed to read chunk tree on sde
[ 2039.785544] BTRFS: open_ctree failed
[ 2039.892750] BTRFS info (device sde): btrfs: use no compression
[ 2039.892758] BTRFS info (device sde): disk space caching is enabled
[ 2039.892761] BTRFS: has skinny extents
[ 2039.894223] BTRFS: failed to read chunk tree on sde
[ 2039.909454] BTRFS: open_ctree failed
###########################
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[root@rockstor ~]# btrfs fi sh
Label: 'rockstor_rockstor' uuid: 43308bee-a17f-4b11-9bbf-e9bd3fcc7b6f
Total devices 2 FS bytes used 1.44GiB
devid 1 size 110.88GiB used 3.02GiB path /dev/sda3
devid 2 size 1.82TiB used 0.00B path /dev/sdf
warning, device 4 is missing
warning devid 4 not found already
Label: 'waldpark' uuid: bc36f340-8b89-421e-9288-b573457ed7de
Total devices 4 FS bytes used 1.38TiB
devid 1 size 1.82TiB used 708.01GiB path /dev/sdc
devid 2 size 1.82TiB used 708.01GiB path /dev/sdd
devid 3 size 1.82TiB used 707.54GiB path /dev/sde
*** Some devices missing
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[root@rockstor ~]# btrfs-show-super /dev/sdc
superblock: bytenr=65536, device=/dev/sdc
---------------------------------------------------------
csum 0x81ca0c6d [match]
bytenr 65536
flags 0x1
( WRITTEN )
magic _BHRfS_M [match]
fsid bc36f340-8b89-421e-9288-b573457ed7de
label waldpark
generation 949
root 1288110080
sys_array_size 290
chunk_root_generation 902
root_level 1
chunk_root 1519382429696
chunk_root_level 1
log_root 0
log_root_transid 0
log_root_level 0
total_bytes 8001595736064
bytes_used 1517774807040
sectorsize 4096
nodesize 16384
leafsize 16384
stripesize 4096
root_dir 6
num_devices 4
compat_flags 0x0
compat_ro_flags 0x0
incompat_flags 0x161
( MIXED_BACKREF |
BIG_METADATA |
EXTENDED_IREF |
SKINNY_METADATA )
csum_type 0
csum_size 4
cache_generation 949
uuid_tree_generation 949
dev_item.uuid e6ede03b-2432-4d75-ad85-399730ce0bc9
dev_item.fsid bc36f340-8b89-421e-9288-b573457ed7de [match]
dev_item.type 0
dev_item.total_bytes 2000398934016
dev_item.bytes_used 760217600000
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
###########################
###########################
###########################
[root@rockstor ~]# mount -o degraded /dev/sdc /mnt2/waldpark
mount: wrong fs type, bad option, bad superblock on /dev/sdc,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
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[root@rockstor ~]# btrfs check /dev/sdc
warning, device 4 is missing
warning devid 4 not found already
Checking filesystem on /dev/sdc
UUID: bc36f340-8b89-421e-9288-b573457ed7de
checking extents
checking free space cache
checking fs roots
checking csums
checking root refs
checking quota groups
Ignoring qgroup relation key 258
Ignoring qgroup relation key 965
Ignoring qgroup relation key 966
Ignoring qgroup relation key 967
Ignoring qgroup relation key 567172078071971841
Ignoring qgroup relation key 567172078071971841
Ignoring qgroup relation key 567172078071971841
Ignoring qgroup relation key 567172078071971841
found 1517403873988 bytes used err is 0
total csum bytes: 1479836856
total tree bytes: 2050932736
total fs tree bytes: 451002368
total extent tree bytes: 51707904
btree space waste bytes: 112210244
file data blocks allocated: 1680396222464
referenced 1666725031936
extent buffer leak: start 1136508928 len 16384
extent buffer leak: start 1130315776 len 16384
extent buffer leak: start 1230094336 len 16384
extent buffer leak: start 1689272320 len 16384
extent buffer leak: start 1689436160 len 16384--
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