Hi guys, and again my 12TB virtual machine btrfs file system broke into pieces. I checked today in the morning and there was not any error message regarding btrfs. 10 minutes ago I needed to suspend the virtual machine and after I resumed, all folders on my (still mounted) file system have gone. So in my opinion, the Parallels Virtual machine is not cleanly handling this. Is there anything I can do now to save my data? This are the error log messages: # tail -f /var/log/messages 2020-01-11T13:57:55.739361-03:00 linux-ze6w kernel: [512260.892881] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:57:57.986773-03:00 linux-ze6w chronyd[1943]: Selected source 185.184.223.224 2020-01-11T13:58:00.766543-03:00 linux-ze6w kernel: [512265.894004] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:00.766559-03:00 linux-ze6w kernel: [512265.894089] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:02.891790-03:00 linux-ze6w sudo: chris : TTY=pts/100 ; PWD=/home/chris ; USER=root ; COMMAND=/usr/bin/su 2020-01-11T13:58:02.893238-03:00 linux-ze6w sudo: pam_unix(sudo:session): session opened for user root by chris(uid=0) 2020-01-11T13:58:02.897765-03:00 linux-ze6w su: (to root) chris on pts/100 2020-01-11T13:58:02.898820-03:00 linux-ze6w su: pam_unix(su:session): session opened for user root by chris(uid=0) 2020-01-11T13:58:05.798179-03:00 linux-ze6w kernel: [512270.925046] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:05.798193-03:00 linux-ze6w kernel: [512270.925102] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:10.822192-03:00 linux-ze6w kernel: [512275.951137] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:10.822204-03:00 linux-ze6w kernel: [512275.951174] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:15.850385-03:00 linux-ze6w kernel: [512280.977909] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:15.850400-03:00 linux-ze6w kernel: [512280.977975] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:20.882236-03:00 linux-ze6w kernel: [512286.010503] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:20.882247-03:00 linux-ze6w kernel: [512286.010577] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:22.234199-03:00 linux-ze6w kernel: [512287.361025] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562110521344 2020-01-11T13:58:22.234213-03:00 linux-ze6w kernel: [512287.364054] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562110472192 2020-01-11T13:58:22.234214-03:00 linux-ze6w kernel: [512287.364060] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562110455808 2020-01-11T13:58:22.250399-03:00 linux-ze6w kernel: [512287.377085] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562110488576 2020-01-11T13:58:22.270208-03:00 linux-ze6w kernel: [512287.397958] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562110455808 2020-01-11T13:58:22.270221-03:00 linux-ze6w kernel: [512287.398038] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562110455808 2020-01-11T13:58:22.270221-03:00 linux-ze6w kernel: [512287.398067] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562110455808 2020-01-11T13:58:23.098451-03:00 linux-ze6w kernel: [512288.225913] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562059993088 2020-01-11T13:58:25.910246-03:00 linux-ze6w kernel: [512291.036604] btree_readpage_end_io_hook: 17 callbacks suppressed 2020-01-11T13:58:25.910266-03:00 linux-ze6w kernel: [512291.036607] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:25.910267-03:00 linux-ze6w kernel: [512291.036708] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:26.338226-03:00 linux-ze6w kernel: [512291.467459] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562258780160 2020-01-11T13:58:26.338237-03:00 linux-ze6w kernel: [512291.467517] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562258780160 2020-01-11T13:58:26.338238-03:00 linux-ze6w kernel: [512291.467585] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562258780160 2020-01-11T13:58:26.338238-03:00 linux-ze6w kernel: [512291.467624] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562258780160 2020-01-11T13:58:28.882182-03:00 linux-ze6w kernel: [512294.011515] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345484288 2020-01-11T13:58:28.914197-03:00 linux-ze6w kernel: [512294.041798] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345484288 2020-01-11T13:58:28.914214-03:00 linux-ze6w kernel: [512294.041883] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345484288 2020-01-11T13:58:28.914214-03:00 linux-ze6w kernel: [512294.041936] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345484288 2020-01-11T13:58:30.938342-03:00 linux-ze6w kernel: [512296.064421] btree_readpage_end_io_hook: 4 callbacks suppressed 2020-01-11T13:58:30.938354-03:00 linux-ze6w kernel: [512296.064425] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:30.938355-03:00 linux-ze6w kernel: [512296.064503] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:32.078216-03:00 linux-ze6w kernel: [512297.204873] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562285453312 2020-01-11T13:58:32.078230-03:00 linux-ze6w kernel: [512297.205110] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562285453312 2020-01-11T13:58:32.078230-03:00 linux-ze6w kernel: [512297.205174] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562285453312 2020-01-11T13:58:32.078232-03:00 linux-ze6w kernel: [512297.205212] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562285453312 2020-01-11T13:58:35.962296-03:00 linux-ze6w kernel: [512301.090582] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:35.962308-03:00 linux-ze6w kernel: [512301.090653] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:40.482196-03:00 linux-ze6w kernel: [512305.611514] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562258780160 2020-01-11T13:58:40.482211-03:00 linux-ze6w kernel: [512305.611572] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562258780160 2020-01-11T13:58:40.482212-03:00 linux-ze6w kernel: [512305.611624] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562258780160 2020-01-11T13:58:40.482213-03:00 linux-ze6w kernel: [512305.611664] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562258780160 2020-01-11T13:58:40.990210-03:00 linux-ze6w kernel: [512306.116117] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:40.990226-03:00 linux-ze6w kernel: [512306.116218] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:42.530181-03:00 linux-ze6w kernel: [512307.659684] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345484288 2020-01-11T13:58:42.530194-03:00 linux-ze6w kernel: [512307.659724] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345484288 2020-01-11T13:58:42.530194-03:00 linux-ze6w kernel: [512307.659762] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345484288 2020-01-11T13:58:42.530195-03:00 linux-ze6w kernel: [512307.659800] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345484288 2020-01-11T13:58:43.462391-03:00 linux-ze6w kernel: [512308.589145] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345451520 2020-01-11T13:58:43.462410-03:00 linux-ze6w kernel: [512308.590058] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345451520 2020-01-11T13:58:43.462410-03:00 linux-ze6w kernel: [512308.590113] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345451520 2020-01-11T13:58:43.462412-03:00 linux-ze6w kernel: [512308.590152] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345451520 2020-01-11T13:58:46.014183-03:00 linux-ze6w kernel: [512311.142992] btree_readpage_end_io_hook: 20 callbacks suppressed 2020-01-11T13:58:46.014200-03:00 linux-ze6w kernel: [512311.142994] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:46.014200-03:00 linux-ze6w kernel: [512311.143077] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:46.290228-03:00 linux-ze6w kernel: [512311.418594] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345451520 2020-01-11T13:58:46.290246-03:00 linux-ze6w kernel: [512311.418638] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345451520 2020-01-11T13:58:51.042208-03:00 linux-ze6w kernel: [512316.170407] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:51.042229-03:00 linux-ze6w kernel: [512316.170495] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:53.786220-03:00 linux-ze6w kernel: [512318.911878] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562059993088 2020-01-11T13:58:53.786240-03:00 linux-ze6w kernel: [512318.911963] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562059993088 2020-01-11T13:58:53.786241-03:00 linux-ze6w kernel: [512318.913482] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345451520 2020-01-11T13:58:53.786241-03:00 linux-ze6w kernel: [512318.913583] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562345451520 2020-01-11T13:58:53.786242-03:00 linux-ze6w kernel: [512318.913588] BTRFS: error (device sdc1) in __btrfs_run_delayed_items:1148: errno=-5 IO failure 2020-01-11T13:58:53.786242-03:00 linux-ze6w kernel: [512318.913590] BTRFS info (device sdc1): forced readonly 2020-01-11T13:58:53.786242-03:00 linux-ze6w kernel: [512318.913591] BTRFS warning (device sdc1): Skipping commit of aborted transaction. 2020-01-11T13:58:53.786243-03:00 linux-ze6w kernel: [512318.913592] BTRFS: error (device sdc1) in cleanup_transaction:1881: errno=-5 IO failure 2020-01-11T13:58:56.078317-03:00 linux-ze6w kernel: [512321.203683] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 2020-01-11T13:58:56.078334-03:00 linux-ze6w kernel: [512321.203751] BTRFS error (device sdc1): bad tree block start 14275350892879035392 2562508521472 Thanks, Chris
