From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2E976C2D0C0 for ; Sat, 21 Dec 2019 14:06:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D58A42072B for ; Sat, 21 Dec 2019 14:06:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="cFleuRkh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727015AbfLUOGH (ORCPT ); Sat, 21 Dec 2019 09:06:07 -0500 Received: from mout.gmx.net ([212.227.17.20]:55941 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726948AbfLUOGH (ORCPT ); Sat, 21 Dec 2019 09:06:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1576937163; bh=gCApY3FQxlcUS9rYiM7xEkfCH0ZB7DqpLF9xVIGMKxI=; h=X-UI-Sender-Class:Date:From:To:Subject; b=cFleuRkhBhwCBP85lp/Te2m5/puhXqSRPtUtxL21ln0vcSkw/A8uZZtxR1KlHDdUQ eo2ZqM5hG7S6a3ShAf8pA7Xu7HisKeQglxE+DYoqlr0rK8xP6ekjkKkjCHRNdec7AX Jt/2Dxe4UYzI9P8V4KV9bYIifeZS4qWfmrr9SNLY= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [10.0.8.1] ([91.17.252.101]) by mail.gmx.com (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1Msq24-1hpssU3Zge-00tDm9 for ; Sat, 21 Dec 2019 15:06:03 +0100 Date: Sat, 21 Dec 2019 15:06:00 +0100 From: jollemeyer@gmx.de To: linux-btrfs@vger.kernel.org Message-ID: Subject: read time block corruption on root partition, Not booting MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Mailer: MailDroid/4.91 (Android 9) User-Agent: MailDroid/4.91 (Android 9) X-Provags-ID: V03:K1:Hy2Py7gu4swOJ+G2j08FcdDS6yOMP/UPIXFDUJ3d8HUpAGv98R9 nClRkgckoE8o9Abkekg/dstoF2NXWcE8x9d1N6tVqot6VPHAo57G1Afm122NZG334KnBh41 taANOc04HWERBqGqoCgzbCEh3pn5ip4Q81dSAUmPB+r5Y0JZMsuDKDJGwSN9ha1mSCbw4uj IzBOCW50qLzfFCGRCDX1Q== X-UI-Out-Filterresults: notjunk:1;V03:K0:wHWnFrQJb3g=:/ojyVqF2NZTP+FVeUJO6c5 z1Nw5py+Rjpv6bWF3ihocPnsQJH0cpq0rO77eLyRDKDfxE9XDJiblAe802L2vMIFL5EJnLB1t PK6BCBLBFOGkfSkOHG76ZRJ//Bxe+qhAoCqtHEOYkqJvpoHr2A1EPjo+3mFsPML+OEF4UqJNK WHSSvw/dqT7w/Hljn2Lfijjm4JAYZYogCvddtfzGTrVna999EkVUin2vggdnUKu9zOHc0dNT+ SWMbTVtFI08QFMeWt4QvjcntrA+GH8WC1zzLtd4liHdywvoILvtqkv5DwdStBPGfoTCVBkcsh VfCdcApltx9H2pQ08XP7sTUc3cRpNF6g3jf9SJMLDBox/QZ38ATDDsA3bbmHt6vh2o7SbKdMt 81ginoQhF+Vm6u5QAv8wgtODyW2cURslC04LZ6/0xpI521OJaZn6nEmKEsBBTBJ2SoM6i+kDb RoJmkQZpNjXkKPWiXD8tKJZ7v2d7Pvfss/fv1HAEY3afWq6PoIqqLNBgWKFHkVtYIExbOr67C gNS9TD4FIo6NXWxp/pao9Tz2PkHGkPN54g06Ru7kyfgVKxtE3IZKayUNhbwy5WFzOtaR7FZId BolLf3zaeoSyaxS+hx4RVuZ0+ymNqMdqTR+pAYMCIeNlMaDo87iYBTuWC7R83G7zi0PlW7OKi 50D3tKRIEuzxWPyJcmlr9eQp0C839u1MPF4wY/HafkS4vlJ7vfM5vl2cfClwprGdzgK8Es+DQ YhpEdOudATqDEcnhL7RzDERcIm5ANJ+il7I50wI8tKu/1u0vHAYrVc3dC3671JWJzRdDPtnji 4AegGcGqurBTJ9dxSt0JqjC6IJ74RGOVDPDyNwvHw4owgug7quz9mIbWaIH7HBFbBxdAquJHz jPUK5eC54tZ/UO4HsUKRkK3cLeCLrQEpQqUJbupk7JD8witBqLAV5RNisv2DPTDZ8b96sYNyU YJiDqpY0pWTK2gPkCmbq1NoxgEMEJqmM10JKnxzNeHWcSS3NMYHZuSRFEW/+B/aej+uRs9mee TLPIhdzGkVdZfJY9bPuTU+lQfEkfE0JFHLDQKa2/h7vA42TudYNd74SPRbeYac36fOf4ZHZax maXc4IJD6FOXtV9HmiUdK3dsFTpH9XnI2gk2Bm1SCX+BJH6auEGnQ5g/FnwVesYxlpPUIJAdn 7jtCEQU8VuIyJWS3PJBeaBf9rAy2al+oLd2HUFBQmFSXsFvynAnRosHHN3Ig0TuqtYTe6uwWE fooQqqCKLbT5mxzgQc1Vxc/mVtjYMqvELkBAg54S8CFgKC5DBO4EPola8r58= Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Dear all, =20 on my BTRFS root partition (/dev/sda), a "read time block corruption" was d= etected. The system refuses to boot. Current kernel is 5.4.2-1-Manjaro. =20 Systemd's journalctl generated the following output: =20 Dez 21 10:46:41 Phoenix kernel: BTRFS critical (device sda): corrupt leaf: = block=3D2089035464704 slot=3D85 extent bytenr=3D1937096425472 len=3D4096 in= valid extent refs, have 1 expect >=3D inline 1048577 Dez 21 10:46:41 Phoenix kernel: BTRFS error (device sda): block=3D208903546= 4704 read time tree block corruption detected Dez 21 10:46:41 Phoenix kernel: BTRFS critical (device sda): corrupt leaf: = block=3D2089035464704 slot=3D85 extent bytenr=3D1937096425472 len=3D4096 in= valid extent refs, have 1 expect >=3D inline 1048577 Dez 21 10:46:41 Phoenix kernel: BTRFS error (device sda): block=3D208903546= 4704 read time tree block corruption detected Dez 21 10:46:41 Phoenix kernel: BTRFS critical (device sda): corrupt leaf: = block=3D2089035464704 slot=3D85 extent bytenr=3D1937096425472 len=3D4096 in= valid extent refs, have 1 expect >=3D inline 1048577 Dez 21 10:46:41 Phoenix kernel: BTRFS error (device sda): block=3D208903546= 4704 read time tree block corruption detected Dez 21 10:46:41 Phoenix kernel: BTRFS critical (device sda): corrupt leaf: = block=3D2089035464704 slot=3D85 extent bytenr=3D1937096425472 len=3D4096 in= valid extent refs, have 1 expect >=3D inline 1048577 Dez 21 10:46:41 Phoenix kernel: BTRFS error (device sda): block=3D208903546= 4704 read time tree block corruption detected Dez 21 10:46:41 Phoenix kernel: BTRFS: error (device sda) in btrfs_replay_l= og:2293: errno=3D-5 IO failure (Failed to recover log tree) Dez 21 10:46:41 Phoenix kernel: ------------[ cut here ]------------ Dez 21 10:46:41 Phoenix kernel: WARNING: CPU: 7 PID: 621 at fs/btrfs/block-= group.c:132 btrfs_put_block_group+0x42/0x50 [btrfs] Dez 21 10:46:41 Phoenix kernel: Modules linked in: usblp snd_hda_codec_hdmi= intel_rapl_msr snd_hda_codec_realtek intel_rapl_common snd_hda_codec_gener= ic ext4 ledtrig_audio x86_pkg_temp_thermal intel_powerclamp coretemp crc16 = kvm_intel mbcache i915 jbd2 kvm snd_hda_intel snd_intel_nhlt i2c_algo_bit i= rqbypass drm_kms_helper snd_hda_codec crct10dif_pclmul crc32_pclmul snd_hda= _core mousedev ghash_clmulni_intel drm snd_hwdep snd_pcm aesni_intel crypto= _simd cryptd glue_helper mei_hdcp intel_cstate iTCO_wdt intel_gtt snd_timer= iTCO_vendor_support intel_uncore mei_me intel_rapl_perf input_leds agpgart= i2c_i801 snd syscopyarea mei sysfillrect lpc_ich r8168(OE) sysimgblt sound= core fb_sys_fops evdev ie31200_edac mac_hid vboxpci(OE) vboxnetflt(OE) vbox= netadp(OE) vboxdrv(OE) sg crypto_user ip_tables x_tables hid_generic usbhid= hid btrfs libcrc32c crc32c_generic xor uas usb_storage raid6_pq sr_mod cdr= om sd_mod ahci serio_raw atkbd libahci libps2 libata xhci_pci scsi_mod xhci= _hcd ehci_pci crc32c_intel ehci_hcd i8042 serio Dez 21 10:46:41 Phoenix kernel: CPU: 7 PID: 621 Comm: mount Tainted: G = OE 5.4.2-1-MANJARO #1 Dez 21 10:46:41 Phoenix kernel: Hardware name: To Be Filled By O.E.M. To Be= Filled By O.E.M./H77 Pro4/MVP, BIOS P1.40 09/04/2012 Dez 21 10:46:41 Phoenix kernel: RIP: 0010:btrfs_put_block_group+0x42/0x50 [= btrfs] Dez 21 10:46:41 Phoenix kernel: Code: 2d 48 83 7d 50 00 75 22 48 8b 85 e8 0= 1 00 00 48 85 c0 75 1e 48 8b bd d8 00 00 00 e8 a8 08 66 d9 48 89 ef 5d e9 9= f 08 66 d9 c3 <0f> 0b eb da 0f 0b eb cf 0f 0b eb de 66 90 0f 1f 44 00 00 31= d2 e9 Dez 21 10:46:41 Phoenix kernel: RSP: 0018:ffffa95900f47ae8 EFLAGS: 00010206 Dez 21 10:46:41 Phoenix kernel: RAX: 0000000000000001 RBX: ffff8a1eb7bfe0e0= RCX: 0000000000000000 Dez 21 10:46:41 Phoenix kernel: RDX: 0000000000000001 RSI: ffff8a1ecf5f0250= RDI: ffff8a1eb7bfe000 Dez 21 10:46:41 Phoenix kernel: RBP: ffff8a1eb7bfe000 R08: 0000000000000000= R09: 0000000000000001 Dez 21 10:46:41 Phoenix kernel: R10: 00000000003f6c00 R11: 0000000000000000= R12: ffff8a1ec81b0080 Dez 21 10:46:41 Phoenix kernel: R13: ffff8a1ec81b0090 R14: ffff8a1eb7bfe000= R15: dead000000000100 Dez 21 10:46:41 Phoenix kernel: FS: 00007f77003d7500(0000) GS:ffff8a1ecf5c= 0000(0000) knlGS:0000000000000000 Dez 21 10:46:41 Phoenix kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080= 050033 Dez 21 10:46:41 Phoenix kernel: CR2: 0000559652364460 CR3: 00000003fbaec005= CR4: 00000000001606e0 Dez 21 10:46:41 Phoenix kernel: Call Trace: Dez 21 10:46:41 Phoenix kernel: btrfs_free_block_groups+0x11c/0x260 [btrfs= ] Dez 21 10:46:41 Phoenix kernel: open_ctree+0x187a/0x1bc0 [btrfs] Dez 21 10:46:41 Phoenix kernel: btrfs_mount_root+0x57b/0x670 [btrfs] Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40 Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0 Dez 21 10:46:41 Phoenix kernel: fc_mount+0xe/0x30 Dez 21 10:46:41 Phoenix kernel: vfs_kern_mount.part.0+0x71/0x90 Dez 21 10:46:41 Phoenix kernel: btrfs_mount+0x18e/0x930 [btrfs] Dez 21 10:46:41 Phoenix kernel: ? filename_lookup+0x105/0x190 Dez 21 10:46:41 Phoenix kernel: ? legacy_get_tree+0x27/0x40 Dez 21 10:46:41 Phoenix kernel: ? btrfs_remount+0x4d0/0x4d0 [btrfs] Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40 Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0 Dez 21 10:46:41 Phoenix kernel: do_mount+0x77a/0xa30 Dez 21 10:46:41 Phoenix kernel: ksys_mount+0x7e/0xc0 Dez 21 10:46:41 Phoenix kernel: __x64_sys_mount+0x21/0x30 Dez 21 10:46:41 Phoenix kernel: do_syscall_64+0x4e/0x140 Dez 21 10:46:41 Phoenix kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9 Dez 21 10:46:41 Phoenix kernel: RIP: 0033:0x7f770055ae4e Dez 21 10:46:41 Phoenix kernel: Code: 48 8b 0d 35 00 0c 00 f7 d8 64 89 01 4= 8 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 a5 0= 0 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 02 00 0c 00 f7 d8 64 89= 01 48 Dez 21 10:46:41 Phoenix kernel: RSP: 002b:00007ffedb3135c8 EFLAGS: 00000246= ORIG_RAX: 00000000000000a5 Dez 21 10:46:41 Phoenix kernel: RAX: ffffffffffffffda RBX: 00007f7700681204= RCX: 00007f770055ae4e Dez 21 10:46:41 Phoenix kernel: RDX: 000055d9705f5650 RSI: 000055d9705f56f0= RDI: 000055d9705f73d0 Dez 21 10:46:41 Phoenix kernel: RBP: 000055d9705f5440 R08: 000055d9705f5670= R09: 0000000000000000 Dez 21 10:46:41 Phoenix kernel: R10: 0000000000000000 R11: 0000000000000246= R12: 0000000000000000 Dez 21 10:46:41 Phoenix kernel: R13: 000055d9705f73d0 R14: 000055d9705f5650= R15: 000055d9705f5440 Dez 21 10:46:41 Phoenix kernel: ---[ end trace 71465d442bb4c509 ]--- Dez 21 10:46:41 Phoenix kernel: ------------[ cut here ]------------ Dez 21 10:46:41 Phoenix kernel: WARNING: CPU: 0 PID: 621 at fs/btrfs/block-= group.c:3166 btrfs_free_block_groups+0x1ea/0x260 [btrfs] Dez 21 10:46:41 Phoenix kernel: Modules linked in: usblp snd_hda_codec_hdmi= intel_rapl_msr snd_hda_codec_realtek intel_rapl_common snd_hda_codec_gener= ic ext4 ledtrig_audio x86_pkg_temp_thermal intel_powerclamp coretemp crc16 = kvm_intel mbcache i915 jbd2 kvm snd_hda_intel snd_intel_nhlt i2c_algo_bit i= rqbypass drm_kms_helper snd_hda_codec crct10dif_pclmul crc32_pclmul snd_hda= _core mousedev ghash_clmulni_intel drm snd_hwdep snd_pcm aesni_intel crypto= _simd cryptd glue_helper mei_hdcp intel_cstate iTCO_wdt intel_gtt snd_timer= iTCO_vendor_support intel_uncore mei_me intel_rapl_perf input_leds agpgart= i2c_i801 snd syscopyarea mei sysfillrect lpc_ich r8168(OE) sysimgblt sound= core fb_sys_fops evdev ie31200_edac mac_hid vboxpci(OE) vboxnetflt(OE) vbox= netadp(OE) vboxdrv(OE) sg crypto_user ip_tables x_tables hid_generic usbhid= hid btrfs libcrc32c crc32c_generic xor uas usb_storage raid6_pq sr_mod cdr= om sd_mod ahci serio_raw atkbd libahci libps2 libata xhci_pci scsi_mod xhci= _hcd ehci_pci crc32c_intel ehci_hcd i8042 serio Dez 21 10:46:41 Phoenix kernel: CPU: 0 PID: 621 Comm: mount Tainted: G = W OE 5.4.2-1-MANJARO #1 Dez 21 10:46:41 Phoenix kernel: Hardware name: To Be Filled By O.E.M. To Be= Filled By O.E.M./H77 Pro4/MVP, BIOS P1.40 09/04/2012 Dez 21 10:46:41 Phoenix kernel: RIP: 0010:btrfs_free_block_groups+0x1ea/0x2= 60 [btrfs] Dez 21 10:46:41 Phoenix kernel: Code: 49 bd 22 01 00 00 00 00 ad de e8 51 1= 3 d1 d9 e8 0c d3 4e d9 48 89 ef e8 64 9b ff ff 48 8b 85 00 10 00 00 49 39 c= 4 75 3c eb 5f <0f> 0b 31 c9 31 d2 4c 89 fe 48 89 ef e8 55 85 ff ff 48 8b 43= 08 48 Dez 21 10:46:41 Phoenix kernel: RSP: 0018:ffffa95900f47af8 EFLAGS: 00010206 Dez 21 10:46:41 Phoenix kernel: RAX: ffff8a1eca367488 RBX: ffff8a1eca367488= RCX: 0000000000000000 Dez 21 10:46:41 Phoenix kernel: RDX: 0000000000000001 RSI: ffff8a1eca364200= RDI: 00000000ffffffff Dez 21 10:46:41 Phoenix kernel: RBP: ffff8a1ec81b0000 R08: 0000000000000000= R09: 0000000020000000 Dez 21 10:46:41 Phoenix kernel: R10: 0000000000000005 R11: ffffffffffd5ce37= R12: ffff8a1ec81b1000 Dez 21 10:46:41 Phoenix kernel: R13: dead000000000122 R14: dead000000000100= R15: ffff8a1eca367400 Dez 21 10:46:41 Phoenix kernel: FS: 00007f77003d7500(0000) GS:ffff8a1ecf40= 0000(0000) knlGS:0000000000000000 Dez 21 10:46:41 Phoenix kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080= 050033 Dez 21 10:46:41 Phoenix kernel: CR2: 0000559006e55d68 CR3: 00000003fbaec006= CR4: 00000000001606f0 Dez 21 10:46:41 Phoenix kernel: Call Trace: Dez 21 10:46:41 Phoenix kernel: open_ctree+0x187a/0x1bc0 [btrfs] Dez 21 10:46:41 Phoenix kernel: btrfs_mount_root+0x57b/0x670 [btrfs] Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40 Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0 Dez 21 10:46:41 Phoenix kernel: fc_mount+0xe/0x30 Dez 21 10:46:41 Phoenix kernel: vfs_kern_mount.part.0+0x71/0x90 Dez 21 10:46:41 Phoenix kernel: btrfs_mount+0x18e/0x930 [btrfs] Dez 21 10:46:41 Phoenix kernel: ? filename_lookup+0x105/0x190 Dez 21 10:46:41 Phoenix kernel: ? legacy_get_tree+0x27/0x40 Dez 21 10:46:41 Phoenix kernel: ? btrfs_remount+0x4d0/0x4d0 [btrfs] Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40 Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0 Dez 21 10:46:41 Phoenix kernel: do_mount+0x77a/0xa30 Dez 21 10:46:41 Phoenix kernel: ksys_mount+0x7e/0xc0 Dez 21 10:46:41 Phoenix kernel: __x64_sys_mount+0x21/0x30 Dez 21 10:46:41 Phoenix kernel: do_syscall_64+0x4e/0x140 Dez 21 10:46:41 Phoenix kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9 Dez 21 10:46:41 Phoenix kernel: RIP: 0033:0x7f770055ae4e Dez 21 10:46:41 Phoenix kernel: Code: 48 8b 0d 35 00 0c 00 f7 d8 64 89 01 4= 8 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 a5 0= 0 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 02 00 0c 00 f7 d8 64 89= 01 48 Dez 21 10:46:41 Phoenix kernel: RSP: 002b:00007ffedb3135c8 EFLAGS: 00000246= ORIG_RAX: 00000000000000a5 Dez 21 10:46:41 Phoenix kernel: RAX: ffffffffffffffda RBX: 00007f7700681204= RCX: 00007f770055ae4e Dez 21 10:46:41 Phoenix kernel: RDX: 000055d9705f5650 RSI: 000055d9705f56f0= RDI: 000055d9705f73d0 Dez 21 10:46:41 Phoenix kernel: RBP: 000055d9705f5440 R08: 000055d9705f5670= R09: 0000000000000000 Dez 21 10:46:41 Phoenix kernel: R10: 0000000000000000 R11: 0000000000000246= R12: 0000000000000000 Dez 21 10:46:41 Phoenix kernel: R13: 000055d9705f73d0 R14: 000055d9705f5650= R15: 000055d9705f5440 Dez 21 10:46:41 Phoenix kernel: ---[ end trace 71465d442bb4c50a ]--- Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda): space_info 1 has 7= 33175808 free, is not full Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda): space_info total= =3D1386200694784, used=3D1385467318272, pinned=3D0, reserved=3D4096, may_us= e=3D0, readonly=3D196608 Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda): global_block_rsv: = size 0 reserved 0 Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda): trans_block_rsv: s= ize 0 reserved 0 Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda): chunk_block_rsv: s= ize 0 reserved 0 Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda): delayed_block_rsv:= size 0 reserved 0 Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda): delayed_refs_rsv: = size 0 reserved 0 Dez 21 10:46:41 Phoenix kernel: BTRFS error (device sda): open_ctree failed -- Subject: Unit process exited -- Defined-By: systemd =20 Btrfs check --readonly /dev/sda also found errors: =20 Opening filesystem to check... Checking filesystem on /dev/sda UUID: 014bdf0a-bcb3-4a7c-b58d-c1fc17281f7e found 1386975199232 bytes used, error(s) found total csum bytes: 1352697008 total tree bytes: 1508327424 total fs tree bytes: 61161472 total extent tree bytes: 37421056 btree space waste bytes: 55303865 file data blocks allocated: 1388605296640 referenced 1385670742016 =20 Btrfs scrub does not recognize any errors. =20 Kindly help me to recover this error. =20 many thanks, =20 J=C3=B6rg Meyer =20