Thanks for the help. I tried btrfs-progs 3.16, same results. IWT-VM ~ # blkid /dev/sdb1: LABEL="Fast" UUID="c41dc6db-6f00-4d60-a2f7-acbceb25e4e7" UUID_SUB="0d26e72e-3848-455f-a250-56b442aa3bec" TYPE="btrfs" PARTUUID="000f11d6-01" /dev/sdb2: LABEL="Root" UUID="61f6ce80-6d05-414f-9f0f-3d540fa82f2e" UUID_SUB="cb941fed-b0f5-4a3c-8407-919f8de730b2" TYPE="btrfs" PARTUUID="000f11d6-02" /dev/sdd1: LABEL="Backup" UUID="92162be2-e52f-42fe-a9fd-da4f26c6abd1" UUID_SUB="988edf3f-616a-482d-a29a-dfd0d61185f8" TYPE="btrfs" PARTUUID="000963fc-01" /dev/sdc1: LABEL="Backup" UUID="92162be2-e52f-42fe-a9fd-da4f26c6abd1" UUID_SUB="3be06b82-6e5a-4f3b-a01c-19a0ae75711e" TYPE="btrfs" PARTLABEL="Linux filesystem" PARTUUID="1128e68b-15ff-4279-b7a2-dfd4410d2c77" /dev/sdf1: LABEL="Backup" UUID="92162be2-e52f-42fe-a9fd-da4f26c6abd1" UUID_SUB="c4573cea-cede-4143-a649-2cc3d97549a5" TYPE="btrfs" PARTLABEL="Linux filesystem" PARTUUID="4faf614b-8748-4464-b828-c26d1f477ca0" /dev/sde3: LABEL="Backup" UUID="92162be2-e52f-42fe-a9fd-da4f26c6abd1" UUID_SUB="cfbc161b-8a80-4f8b-85d8-48703a1670ea" TYPE="btrfs" PARTLABEL="Backup" PARTUUID="f8626199-38c0-490e-851d-24230d374ce2" /dev/sdg3: LABEL="Backup" UUID="92162be2-e52f-42fe-a9fd-da4f26c6abd1" UUID_SUB="6e395f0f-47d0-4fec-b509-19d6f8ff076d" TYPE="btrfs" PTTYPE="dos" PARTLABEL="Backup" PARTUUID="588303d8-5af0-48c6-8d85-7ef778c04783" /dev/sdh1: LABEL="Fast" UUID="c41dc6db-6f00-4d60-a2f7-acbceb25e4e7" UUID_SUB="e513f51a-0014-4332-a3ea-a1296b22618d" TYPE="btrfs" PARTLABEL="Fast" PARTUUID="348b71c0-3353-46f9-a777-f63c68fdc934" /dev/sdh2: LABEL="Swap2" UUID="10fd61ac-c911-4d0b-8b2e-b72b845fec28" TYPE="swap" PARTLABEL="Swap" PARTUUID="a09a4bd5-a098-4c6d-a668-627175cdd574" /dev/sdi1: LABEL="Fast" UUID="c41dc6db-6f00-4d60-a2f7-acbceb25e4e7" UUID_SUB="2b8930e5-2fb9-4bb0-a67c-aa12aaea1640" TYPE="btrfs" PARTUUID="492b4f1e-71a8-4002-baeb-e17e584bd032" /dev/sdi2: LABEL="Swap1" UUID="8f22117a-9cd7-4a50-8f92-b10ed2e890e3" TYPE="swap" PARTLABEL="Swap" PARTUUID="a09a4bd5-a098-4c6d-a668-627175cdd574" /dev/sdi3: LABEL="Root" UUID="61f6ce80-6d05-414f-9f0f-3d540fa82f2e" UUID_SUB="36f3b7ca-70fd-4188-91c6-87bbb4914ffb" TYPE="btrfs" PARTUUID="cbdc9b38-d8a5-4b2a-9050-bdfc6d9ee1f1" /dev/sr0: UUID="2011-12-21-00-52-16-00" LABEL="DA 5.0 (2)" TYPE="iso9660" /dev/sdj1: LABEL="Data" UUID="89181f84-bace-43f8-9534-693f99c4d033" UUID_SUB="2c35cfb9-e7c5-4258-8a66-0eabe763e1d9" TYPE="btrfs" PARTUUID="c193216e-01" /dev/sda1: LABEL="Data" UUID="89181f84-bace-43f8-9534-693f99c4d033" UUID_SUB="c0dcd706-cffc-41ce-a633-3fa501b8ddd3" TYPE="btrfs" PARTUUID="ad3ee8a5-01" /dev/sde1: PARTLABEL="Grub" PARTUUID="79155d93-6922-462e-be91-fbc35eb16051" /dev/sde2: PARTUUID="0d4f7267-afe9-45af-a833-f4d618aedbf9" /dev/sdg1: PARTLABEL="Grub" PARTUUID="79155d93-6922-462e-be91-fbc35eb16051" /dev/sdg2: PARTUUID="d9e177f6-2b38-4e9f-8c5c-96c0f5234f46"
-----Original Message----- From: Anand Jain [mailto:anand.j...@oracle.com] Sent: Tuesday, 4 November 2014 2:12 PM To: Paul Jones; linux-btrfs@vger.kernel.org Subject: Re: btrfs check - Couldn't open file system very strange. I have no clue, yet. also bit concerned if this turns out to be a real issue. hope you could help to narrow down. can you send `blkid` output from your system. And can you go back to 3.16 and check if you have the same issue. thanks, anand > IWT-VM ~ # uname -a > Linux IWT-VM 3.17.2-gentoo #1 SMP Mon Nov 3 15:46:50 AEDT 2014 x86_64 > Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz GenuineIntel GNU/Linux IWT-VM > ~ # mount > /dev/sdb2 on / type btrfs > (rw,noatime,compress=zlib,ssd,noacl,space_cache) > /dev/sdh1 on /media/fast type btrfs (rw,noatime,ssd,noacl,space_cache) > /dev/sdg3 on /media/backup type btrfs > (rw,noatime,compress=zlib,noacl,space_cache) > /dev/sda1 on /media/data type btrfs > (rw,noatime,compress=zlib,noacl,space_cache) > IWT-VM ~ # btrfs fi sh > Label: 'Root' uuid: 61f6ce80-6d05-414f-9f0f-3d540fa82f2e > Total devices 2 FS bytes used 6.58GiB > devid 4 size 60.00GiB used 18.03GiB path /dev/sdb2 > devid 5 size 59.93GiB used 18.03GiB path /dev/sdi3 > > Label: 'Fast' uuid: c41dc6db-6f00-4d60-a2f7-acbceb25e4e7 > Total devices 3 FS bytes used 396.85GiB > devid 1 size 471.93GiB used 416.02GiB path /dev/sdh1 > devid 2 size 412.00GiB used 356.01GiB path /dev/sdi1 > devid 3 size 163.57GiB used 108.01GiB path /dev/sdb1 > > Label: 'Backup' uuid: 92162be2-e52f-42fe-a9fd-da4f26c6abd1 > Total devices 5 FS bytes used 2.74TiB > devid 6 size 891.50GiB used 822.00GiB path /dev/sdg3 > devid 8 size 698.64GiB used 629.00GiB path /dev/sdd1 > devid 9 size 891.51GiB used 821.03GiB path /dev/sde3 > devid 10 size 2.73TiB used 2.66TiB path /dev/sdc1 > devid 11 size 931.51GiB used 924.00GiB path /dev/sdf1 > > Label: 'Data' uuid: 89181f84-bace-43f8-9534-693f99c4d033 > Total devices 2 FS bytes used 42.50GiB > devid 1 size 279.46GiB used 211.03GiB path /dev/sda1 > devid 2 size 279.46GiB used 211.03GiB path /dev/sdj1 > > Btrfs v3.17 > IWT-VM ~ # umount /media/backup > umount: /media/backup: not mounted > IWT-VM ~ # btrfs check /dev/sdg3 > Couldn't open file system > IWT-VM ~ # btrfs check /dev/sdd1 > Couldn't open file system > IWT-VM ~ # btrfs check /dev/sde3 > Couldn't open file system > IWT-VM ~ # btrfs check /dev/sda1 > Checking filesystem on /dev/sda1 > UUID: 89181f84-bace-43f8-9534-693f99c4d033 > checking extents > checking free space cache > checking fs roots > checking csums > checking root refs > found 38060448123 bytes used err is 0 > total csum bytes: 44401072 > total tree bytes: 110723072 > total fs tree bytes: 50872320 > total extent tree bytes: 9994240 > btree space waste bytes: 12145264 > file data blocks allocated: 45618331648 > referenced 48120782848 > Btrfs v3.17 > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" > in the body of a message to majord...@vger.kernel.org More majordomo > info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html