Chris Murphy píše v So 23. 05. 2020 v 17:21 -0600: > On Sat, May 23, 2020 at 8:38 AM Jiří Lisický <jiri_lisicky@xxxxxxxxx> wrote: > > > > [root@localhost-live tmp] # btrfs rescue super -v /dev/loop4 > > All Devices: > > Device: id = 1, name = /dev/loop4 > > > > Before Recovering: > > [All good supers]: > > device name = /dev/loop4 > > superblock bytenr = 65536 > > > > device name = /dev/loop4 > > superblock bytenr = 67108864 > > > > [All bad supers]: > > > > All supers are valid, no need to recover > > OK. So they're good. > > > > > > > > > [root@localhost-live tmp]# mount -o ro,recovery /dev/loop4 ./mnt > > mount: /home/jirka/tmp/mnt: can't read superblock on /dev/loop4. > > > But it can't be read? This doesn't make sense. What kernel messages > are reported at the time of the mount attempt? When using a newer > kernel, the recovery command is deprecated but should still work. The > new command is 'usebackuproot' [root@localhost-live tmp]# mount -o usebackuproot /dev/loop4 ./mnt mount: /home/jirka/tmp/mnt: can't read superblock on /dev/loop4. log: May 24 15:33:56 localhost-live kernel: BTRFS info (device loop4): trying to use backup root at mount time May 24 15:33:56 localhost-live kernel: BTRFS info (device loop4): disk space caching is enabled May 24 15:33:56 localhost-live kernel: BTRFS critical (device loop4): corrupt leaf: root=1 block=48295936 slot=2, invalid root item size, have 239 expect 439 May 24 15:33:56 localhost-live kernel: BTRFS critical (device loop4): corrupt leaf: root=1 block=48295936 slot=5, invalid root item size, have 239 expect 439 May 24 15:33:56 localhost-live kernel: BTRFS critical (device loop4): corrupt leaf: root=1 block=48295936 slot=7, invalid root item size, have 239 expect 439 May 24 15:33:56 localhost-live kernel: BTRFS warning (device loop4): mismatching generation and generation_v2 found in root item. This root was probably mounted with an older kernel. Resetting all new fields. May 24 15:33:56 localhost-live kernel: BTRFS warning (device loop4): mismatching generation and generation_v2 found in root item. This root was probably mounted with an older kernel. Resetting all new fields. May 24 15:33:56 localhost-live kernel: BTRFS error (device loop4): qgroup generation mismatch, marked as inconsistent May 24 15:33:56 localhost-live kernel: BTRFS info (device loop4): start tree-log replay May 24 15:33:56 localhost-live kernel: BTRFS critical (device loop4): corrupt leaf: root=18446744073709551610 block=94920704 slot=0, invalid root item size, have 239 expect 439 May 24 15:33:56 localhost-live kernel: ------------[ cut here ]------------ May 24 15:33:56 localhost-live kernel: btrfs bad mapping eb start 94920704 len 4096, wanted 3857 439 May 24 15:33:56 localhost-live kernel: WARNING: CPU: 1 PID: 174 at fs/btrfs/extent_io.c:5549 read_extent_buffer+0x10f/0x140 [btrfs] May 24 15:33:56 localhost-live kernel: Modules linked in: nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nf_tables_set nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal snd_hda_intel intel_powerclamp snd_intel_dspcfg snd_hda_codec coretemp i915 snd_hda_core kvm_intel snd_hwdep snd_seq kvm snd_seq_device joydev snd_pcm irqbypass intel_cstate intel_uncore snd_timer intel_rapl_perf snd cec ppdev iTCO_wdt hp_wmi mei_hdcp iTCO_vendor_support mei_wdt parport_pc sparse_keymap soundcore parport rfkill i2c_algo_bit wmi_bmof drm_kms_helper mei_me tpm_infineon mei i2c_i801 lpc_ich pcspkr drm ip_tables nls_utf8 isofs squashfs dm_multipath May 24 15:33:56 localhost-live kernel: 8021q garp mrp stp llc crct10dif_pclmul crc32_pclmul e1000e ghash_clmulni_intel serio_raw wmi video btrfs blake2b_generic xor zstd_compress raid6_pq libcrc32c crc32c_intel zstd_decompress sunrpc be2iscsi bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3 mdio libcxgbi libcxgb qla4xxx iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi loop fuse scsi_transport_iscsi May 24 15:33:56 localhost-live kernel: CPU: 1 PID: 174 Comm: kworker/u8:3 Not tainted 5.6.6-300.fc32.x86_64 #1 May 24 15:33:56 localhost-live kernel: Hardware name: Hewlett-Packard HP Compaq Elite 8300 SFF/3397, BIOS K01 v02.05 05/07/2012 May 24 15:33:56 localhost-live kernel: Workqueue: btrfs-endio-meta btrfs_work_helper [btrfs] May 24 15:33:56 localhost-live kernel: RIP: 0010:read_extent_buffer+0x10f/0x140 [btrfs] May 24 15:33:56 localhost-live kernel: Code: c3 8b 0e 89 4d 00 89 c1 8b 74 0e fc 89 74 0d fc e9 72 ff ff ff 48 89 d1 4d 89 e0 4c 89 ca 48 c7 c7 e0 91 4d c0 e8 38 a4 c8 f9 <0f> 0b 31 f6 4c 89 e2 48 89 ef 5d 41 5c e9 bf 31 5d fa 89 c1 0f b7 May 24 15:33:56 localhost-live kernel: RSP: 0018:ffffb49dc026ba40 EFLAGS: 00010286 May 24 15:33:56 localhost-live kernel: RAX: 000000000000003d RBX: ffff9a37048b0000 RCX: 0000000000000007 May 24 15:33:56 localhost-live kernel: RDX: 00000000fffffff8 RSI: 0000000000000082 RDI: ffff9a37d6a99cc0 May 24 15:33:56 localhost-live kernel: RBP: ffffb49dc026ba59 R08: 0000000000000422 R09: ffffb49dc026b8d0 May 24 15:33:56 localhost-live kernel: R10: 0000000000000005 R11: 0000000000000000 R12: 00000000000001b7 May 24 15:33:56 localhost-live kernel: R13: 0000000000000065 R14: ffff9a370570f5a8 R15: 0000000000000f9b May 24 15:33:56 localhost-live kernel: FS: 0000000000000000(0000) GS:ffff9a37d6a80000(0000) knlGS:0000000000000000 May 24 15:33:56 localhost-live kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 May 24 15:33:56 localhost-live kernel: CR2: 00007ffb02c1f2b8 CR3: 00000000a960a005 CR4: 00000000000606e0 May 24 15:33:56 localhost-live kernel: Call Trace: May 24 15:33:56 localhost-live kernel: check_root_item+0x8b/0x180 [btrfs] May 24 15:33:56 localhost-live kernel: ? crc_42+0x1e/0x1e [crc32c_intel] May 24 15:33:56 localhost-live kernel: ? crc32c_pcl_intel_update+0xa4/0xb0 [crc32c_intel] May 24 15:33:56 localhost-live kernel: ? crc32c_intel_init+0x20/0x20 [crc32c_intel] May 24 15:33:56 localhost-live kernel: ? csum_tree_block+0x11f/0x130 [btrfs] May 24 15:33:56 localhost-live kernel: ? intel_cpufreq_target+0x140/0x140 May 24 15:33:56 localhost-live kernel: ? update_load_avg+0x7a/0x640 May 24 15:33:56 localhost-live kernel: ? intel_cpufreq_target+0x140/0x140 May 24 15:33:56 localhost-live kernel: ? enqueue_entity+0x177/0x770 May 24 15:33:56 localhost-live kernel: ? btrfs_get_32+0x38/0x80 [btrfs] May 24 15:33:56 localhost-live kernel: check_leaf+0x489/0x1530 [btrfs] May 24 15:33:56 localhost-live kernel: ? clear_state_bit+0x140/0x1a0 [btrfs] May 24 15:33:56 localhost-live kernel: ? map_private_extent_buffer+0xd0/0xd0 [btrfs] May 24 15:33:56 localhost-live kernel: btree_readpage_end_io_hook+0x2de/0x320 [btrfs] May 24 15:33:56 localhost-live kernel: end_bio_extent_readpage+0x1c0/0x710 [btrfs] May 24 15:33:56 localhost-live kernel: ? __rq_qos_done_bio+0x24/0x30 May 24 15:33:56 localhost-live kernel: end_workqueue_fn+0x29/0x40 [btrfs] May 24 15:33:56 localhost-live kernel: btrfs_work_helper+0xd6/0x3a0 [btrfs] May 24 15:33:56 localhost-live kernel: process_one_work+0x1b4/0x380 May 24 15:33:56 localhost-live kernel: worker_thread+0x53/0x3e0 May 24 15:33:56 localhost-live kernel: ? process_one_work+0x380/0x380 May 24 15:33:56 localhost-live kernel: kthread+0x115/0x140 May 24 15:33:56 localhost-live kernel: ? __kthread_bind_mask+0x60/0x60 May 24 15:33:56 localhost-live kernel: ret_from_fork+0x35/0x40 May 24 15:33:56 localhost-live kernel: ---[ end trace 013462e0cfd87fc0 ]--- May 24 15:33:56 localhost-live kernel: BTRFS critical (device loop4): corrupt leaf: root=18446744073709551610 block=94920704 slot=1, invalid root item size, have 239 expect 439 May 24 15:33:56 localhost-live kernel: BTRFS error (device loop4): parent transid verify failed on 94920704 wanted 2727500 found 2727499 May 24 15:33:56 localhost-live kernel: BTRFS critical (device loop4): corrupt leaf: root=18446744073709551610 block=94920704 slot=0, invalid root item size, have 239 expect 439 May 24 15:33:56 localhost-live kernel: ------------[ cut here ]------------ May 24 15:33:56 localhost-live kernel: btrfs bad mapping eb start 94920704 len 4096, wanted 3857 439 May 24 15:33:56 localhost-live kernel: WARNING: CPU: 1 PID: 174 at fs/btrfs/extent_io.c:5549 read_extent_buffer+0x10f/0x140 [btrfs] May 24 15:33:56 localhost-live kernel: Modules linked in: nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nf_tables_set nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal snd_hda_intel intel_powerclamp snd_intel_dspcfg snd_hda_codec coretemp i915 snd_hda_core kvm_intel snd_hwdep snd_seq kvm snd_seq_device joydev snd_pcm irqbypass intel_cstate intel_uncore snd_timer intel_rapl_perf snd cec ppdev iTCO_wdt hp_wmi mei_hdcp iTCO_vendor_support mei_wdt parport_pc sparse_keymap soundcore parport rfkill i2c_algo_bit wmi_bmof drm_kms_helper mei_me tpm_infineon mei i2c_i801 lpc_ich pcspkr drm ip_tables nls_utf8 isofs squashfs dm_multipath May 24 15:33:56 localhost-live kernel: 8021q garp mrp stp llc crct10dif_pclmul crc32_pclmul e1000e ghash_clmulni_intel serio_raw wmi video btrfs blake2b_generic xor zstd_compress raid6_pq libcrc32c crc32c_intel zstd_decompress sunrpc be2iscsi bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3 mdio libcxgbi libcxgb qla4xxx iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi loop fuse scsi_transport_iscsi May 24 15:33:56 localhost-live kernel: CPU: 1 PID: 174 Comm: kworker/u8:3 Tainted: G W 5.6.6-300.fc32.x86_64 #1 May 24 15:33:56 localhost-live kernel: Hardware name: Hewlett-Packard HP Compaq Elite 8300 SFF/3397, BIOS K01 v02.05 05/07/2012 May 24 15:33:56 localhost-live kernel: Workqueue: btrfs-endio-meta btrfs_work_helper [btrfs] May 24 15:33:56 localhost-live kernel: RIP: 0010:read_extent_buffer+0x10f/0x140 [btrfs] May 24 15:33:56 localhost-live kernel: Code: c3 8b 0e 89 4d 00 89 c1 8b 74 0e fc 89 74 0d fc e9 72 ff ff ff 48 89 d1 4d 89 e0 4c 89 ca 48 c7 c7 e0 91 4d c0 e8 38 a4 c8 f9 <0f> 0b 31 f6 4c 89 e2 48 89 ef 5d 41 5c e9 bf 31 5d fa 89 c1 0f b7 May 24 15:33:56 localhost-live kernel: RSP: 0018:ffffb49dc026ba40 EFLAGS: 00010286 May 24 15:33:56 localhost-live kernel: RAX: 000000000000003d RBX: ffff9a37048b0000 RCX: 0000000000000007 May 24 15:33:56 localhost-live kernel: RDX: 00000000fffffff8 RSI: 0000000000000082 RDI: ffff9a37d6a99cc0 May 24 15:33:56 localhost-live kernel: RBP: ffffb49dc026ba59 R08: 0000000000000452 R09: ffffb49dc026b8d0 May 24 15:33:56 localhost-live kernel: R10: 0000000000000005 R11: 0000000000000000 R12: 00000000000001b7 May 24 15:33:56 localhost-live kernel: R13: 0000000000000065 R14: ffff9a370570f5a8 R15: 0000000000000f9b May 24 15:33:56 localhost-live kernel: FS: 0000000000000000(0000) GS:ffff9a37d6a80000(0000) knlGS:0000000000000000 May 24 15:33:56 localhost-live kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 May 24 15:33:56 localhost-live kernel: CR2: 00007ffb02c13700 CR3: 00000000a960a005 CR4: 00000000000606e0 May 24 15:33:56 localhost-live kernel: Call Trace: May 24 15:33:56 localhost-live kernel: check_root_item+0x8b/0x180 [btrfs] May 24 15:33:56 localhost-live kernel: ? __find_get_block+0xb6/0x2f0 May 24 15:33:56 localhost-live kernel: ? crc_42+0x1e/0x1e [crc32c_intel] May 24 15:33:56 localhost-live kernel: ? crc32c_pcl_intel_update+0xa4/0xb0 [crc32c_intel] May 24 15:33:56 localhost-live kernel: ? crc32c_intel_init+0x20/0x20 [crc32c_intel] May 24 15:33:56 localhost-live kernel: ? csum_tree_block+0x11f/0x130 [btrfs] May 24 15:33:56 localhost-live kernel: ? ext4_mark_iloc_dirty+0x61f/0x830 May 24 15:33:56 localhost-live kernel: ? intel_cpufreq_target+0x140/0x140 May 24 15:33:56 localhost-live kernel: ? btrfs_get_32+0x38/0x80 [btrfs] May 24 15:33:56 localhost-live kernel: check_leaf+0x489/0x1530 [btrfs] May 24 15:33:56 localhost-live kernel: ? check_preempt_curr+0x7e/0x90 May 24 15:33:56 localhost-live kernel: ? ttwu_do_wakeup+0x19/0x140 May 24 15:33:56 localhost-live kernel: ? map_private_extent_buffer+0xd0/0xd0 [btrfs] May 24 15:33:56 localhost-live kernel: btree_readpage_end_io_hook+0x2de/0x320 [btrfs] May 24 15:33:56 localhost-live kernel: end_bio_extent_readpage+0x1c0/0x710 [btrfs] May 24 15:33:56 localhost-live kernel: ? __rq_qos_done_bio+0x24/0x30 May 24 15:33:56 localhost-live kernel: end_workqueue_fn+0x29/0x40 [btrfs] May 24 15:33:56 localhost-live kernel: btrfs_work_helper+0xd6/0x3a0 [btrfs] May 24 15:33:56 localhost-live kernel: process_one_work+0x1b4/0x380 May 24 15:33:56 localhost-live kernel: worker_thread+0x53/0x3e0 May 24 15:33:56 localhost-live kernel: ? process_one_work+0x380/0x380 May 24 15:33:56 localhost-live kernel: kthread+0x115/0x140 May 24 15:33:56 localhost-live kernel: ? __kthread_bind_ma33:56 localhost-live kernel: ret_from_fork+0x35/0x40 May 24 15:33:56 localhost-live kernel: ---[ end trace 013462e0cfd87fc1 ]--- May 24 15:33:56 localhost-live kernel: BTRFS critical (device loop4): corrupt leaf: root=18446744073709551610 block=94920704 slot=1, invalid root item size, have 239 expect 439 May 24 15:33:56 localhost-live kernel: BTRFS error (device loop4): parent transid verify failed on 94920704 wanted 2727500 found 2727499 May 24 15:33:56 localhost-live kernel: BTRFS warning (device loop4): failed to read log tree May 24 15:33:57 localhost-live kernel: BTRFS error (device loop4): open_ctree failed > What do you get for: > > # btrfs insp dump-s -fa /dev/ > [root@localhost-live tmp]# btrfs insp dump-s -fa /dev/loop4 superblock: bytenr=65536, device=/dev/loop4 --------------------------------------------------------- csum_type 0 (crc32c) csum_size 4 csum 0xdc2c003a [match] bytenr 65536 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 86180ca0-d351-4551-b262-22b49e1adf47 metadata_uuid 86180ca0-d351-4551-b262-22b49e1adf47 label sailfish generation 2727499 root 30703616 sys_array_size 226 chunk_root_generation 2342945 root_level 1 chunk_root 20971520 chunk_root_level 0 log_root 94920704 log_root_transid 0 log_root_level 0 total_bytes 14761832448 bytes_used 5075300352 sectorsize 4096 nodesize 4096 leafsize (deprecated) 4096 stripesize 4096 root_dir 6 num_devices 1 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0x3 ( MIXED_BACKREF | DEFAULT_SUBVOL ) cache_generation 2727498 uuid_tree_generation 0 dev_item.uuid bb3ff90e-e471-48d6-af4e-add19a0a532d dev_item.fsid 86180ca0-d351-4551-b262-22b49e1adf47 [match] dev_item.type 0 dev_item.total_bytes 14761832448 dev_item.bytes_used 14761787392 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 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 0) length 4194304 owner 2 stripe_len 65536 type SYSTEM io_align 4096 io_width 4096 sector_size 4096 num_stripes 1 sub_stripes 0 stripe 0 devid 1 offset 0 dev_uuid bb3ff90e-e471-48d6-af4e-add19a0a532d item 1 key (FIRST_CHUNK_TREE CHUNK_ITEM 20971520) length 8388608 owner 2 stripe_len 65536 type SYSTEM|DUP io_align 65536 io_width 65536 sector_size 4096 num_stripes 2 sub_stripes 0 stripe 0 devid 1 offset 20971520 dev_uuid bb3ff90e-e471-48d6-af4e-add19a0a532d stripe 1 devid 1 offset 29360128 dev_uuid bb3ff90e-e471-48d6-af4e-add19a0a532d backup_roots[4]: backup 0: backup_tree_root: 114339840 gen: 2727497 level: 1 backup_chunk_root: 20971520 gen: 2342945 level: 0 backup_extent_root: 117129216 gen: 2727498 level: 2 backup_fs_root: 88788992 gen: 1765467 level: 0 backup_dev_root: 49008640 gen: 2727493 level: 0 backup_csum_root: 116412416 gen: 2727498 level: 2 backup_total_bytes: 14761832448 backup_bytes_used: 5075410944 backup_num_devices: 1 backup 1: backup_tree_root: 48250880 gen: 2727498 level: 1 backup_chunk_root: 20971520 gen: 2342945 level: 0 backup_extent_root: 89980928 gen: 2727499 level: 2 backup_fs_root: 88788992 gen: 1765467 level: 0 backup_dev_root: 49008640 gen: 2727493 level: 0 backup_csum_root: 89243648 gen: 2727499 level: 2 backup_total_bytes: 14761832448 backup_bytes_used: 5075365888 backup_num_devices: 1 backup 2: backup_tree_root: 90173440 gen: 2727495 level: 1 backup_chunk_root: 20971520 gen: 2342945 level: 0 backup_extent_root: 84922368 gen: 2727495 level: 2 backup_fs_root: 88788992 gen: 1765467 level: 0 backup_dev_root: 49008640 gen: 2727493 level: 0 backup_csum_root: 94969856 gen: 2727496 level: 2 backup_total_bytes: 14761832448 backup_bytes_used: 5075275776 backup_num_devices: 1 backup 3: backup_tree_root: 102043648 gen: 2727496 level: 1 backup_chunk_root: 20971520 gen: 2342945 level: 0 backup_extent_root: 98189312 gen: 2727496 level: 2 backup_fs_root: 88788992 gen: 1765467 level: 0 backup_dev_root: 49008640 gen: 2727493 level: 0 backup_csum_root: 97951744 gen: 2727496 level: 2 backup_total_bytes: 14761832448 backup_bytes_used: 5075275776 backup_num_devices: 1 superblock: bytenr=67108864, device=/dev/loop4 --------------------------------------------------------- csum_type 0 (crc32c) csum_size 4 csum 0x7c4d28f4 [match] bytenr 67108864 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 86180ca0-d351-4551-b262-22b49e1adf47 metadata_uuid 86180ca0-d351-4551-b262-22b49e1adf47 label sailfish generation 2727499 root 30703616 sys_array_size 226 chunk_root_generation 2342945 root_level 1 chunk_root 20971520 chunk_root_level 0 log_root 94920704 log_root_transid 0 log_root_level 0 total_bytes 14761832448 bytes_used 5075300352 sectorsize 4096 nodesize 4096 leafsize (deprecated) 4096 stripesize 4096 root_dir 6 num_devices 1 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0x3 ( MIXED_BACKREF | DEFAULT_SUBVOL ) cache_generation 2727498 uuid_tree_generation 0 dev_item.uuid bb3ff90e-e471-48d6-af4e-add19a0a532d dev_item.fsid 86180ca0-d351-4551-b262-22b49e1adf47 [match] dev_item.type 0 dev_item.total_bytes 14761832448 dev_item.bytes_used 14761787392 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 sys_chunk_array[2048]: item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 0) length 4194304 owner 2 stripe_len 65536 type SYSTEM io_align 4096 io_width 4096 sector_size 4096 num_stripes 1 sub_stripes 0 stripe 0 devid 1 offset 0 dev_uuid bb3ff90e-e471-48d6-af4e-add19a0a532d item 1 key (FIRST_CHUNK_TREE CHUNK_ITEM 20971520) length 8388608 owner 2 stripe_len 65536 type SYSTEM|DUP io_align 65536 io_width 65536 sector_size 4096 num_stripes 2 sub_stripes 0 stripe 0 devid 1 offset 20971520 dev_uuid bb3ff90e-e471-48d6-af4e-add19a0a532d stripe 1 devid 1 offset 29360128 dev_uuid bb3ff90e-e471-48d6-af4e-add19a0a532d backup_roots[4]: backup 0: backup_tree_root: 114339840 gen: 2727497 level: 1 backup_chunk_root: 20971520 gen: 2342945 level: 0 backup_extent_root: 117129216 gen: 2727498 level: 2 backup_fs_root: 88788992 gen: 1765467 level: 0 backup_dev_root: 49008640 gen: 2727493 level: 0 backup_csum_root: 116412416 gen: 2727498 level: 2 backup_total_bytes: 14761832448 backup_bytes_used: 5075410944 backup_num_devices: 1 backup 1: backup_tree_root: 48250880 gen: 2727498 level: 1 backup_chunk_root: 20971520 gen: 2342945 level: 0 backup_extent_root: 89980928 gen: 2727499 level: 2 backup_fs_root: 88788992 gen: 1765467 level: 0 backup_dev_root: 49008640 gen: 2727493 level: 0 backup_csum_root: 89243648 gen: 2727499 level: 2 backup_total_bytes: 14761832448 backup_bytes_used: 5075365888 backup_num_devices: 1 backup 2: backup_tree_root: 90173440 gen: 2727495 level: 1 backup_chunk_root: 20971520 gen: 2342945 level: 0 backup_extent_root: 84922368 gen: 2727495 level: 2 backup_fs_root: 88788992 gen: 1765467 level: 0 backup_dev_root: 49008640 gen: 2727493 level: 0 backup_csum_root: 94969856 gen: 2727496 level: 2 backup_total_bytes: 14761832448 backup_bytes_used: 5075275776 backup_num_devices: 1 backup 3: backup_tree_root: 102043648 gen: 2727496 level: 1 backup_chunk_root: 20971520 gen: 2342945 level: 0 backup_extent_root: 98189312 gen: 2727496 level: 2 backup_fs_root: 88788992 gen: 1765467 level: 0 backup_dev_root: 49008640 gen: 2727493 level: 0 backup_csum_root: 97951744 gen: 2727496 level: 2 backup_total_bytes: 14761832448 backup_bytes_used: 5075275776 backup_num_devices: 1
