Fedora 21 on Raspberry PI 2

[Dario Lesca]

Follow this how to:

http://jonarcher.info/2015/02/getting-fedora-21-raspberry-pi-2/

I have load and update a official F21 arm7 (minimal install) on a new
raspberry PI 2, to make network backup of some server on a 1Gb USB hd
via rsync.

> Linux s-backup-lampo 3.18.12-v7+ #783 SMP PREEMPT Tue May 5 22:48:52 BST 2015 armv7l armv7l armv7l GNU/Linux

Apparent all work find, but after a while rsync run, the mount point go
in read only mode and rsync stop to work with this error:

> rsync: write failed on "/mnt/metal-bk-1t/temp2/dir/file": Input/output error (5)
> rsync error: error in file IO (code 11) at receiver.c(393) [receiver=3.1.1]

And in dmesg and journalctl I see a lot of this message:

> mag 11 09:01:17 s-backup-lampo.ansaldisrl.it kernel: XFS (sda1): xfs_log_force: error -5 returned.
> ....

If I try unmount the device, the umount command still blocked and into
journalctl I see this error:

> mag 11 09:57:26 s-backup-lampo.ansaldisrl.it kernel: XFS (sda1): xfs_log_force: error -5 returned.
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: INFO: task umount:812 blocked for more than 120 seconds.
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel:       Not tainted 3.18.12-v7+ #783
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: umount          D 80521780     0   812    678 0x00000001
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: [<80521780>] (__schedule) from [<80521c70>] (schedule+0x40/0x8c)
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: [<80521c70>] (schedule) from [<7f259530>] (xfs_ail_push_all_sync+0xb8/0xf8 [xfs])
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: [<7f259530>] (xfs_ail_push_all_sync [xfs]) from [<7f2436e4>] (xfs_unmountfs+0x58/0x194 [xfs]
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: [<7f2436e4>] (xfs_unmountfs [xfs]) from [<7f24530c>] (xfs_fs_put_super+0x28/0x5c [xfs])
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: [<7f24530c>] (xfs_fs_put_super [xfs]) from [<8013ed4c>] (generic_shutdown_super+0x80/0xe8)
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: [<8013ed4c>] (generic_shutdown_super) from [<8013f0a0>] (kill_block_super+0x28/0x78)
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: [<8013f0a0>] (kill_block_super) from [<8013f400>] (deactivate_locked_super+0x6c/0x80)
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: [<8013f400>] (deactivate_locked_super) from [<8013fa00>] (deactivate_super+0x68/0x6c)
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: [<8013fa00>] (deactivate_super) from [<8015a900>] (cleanup_mnt+0x4c/0x88)
> mag 11 09:57:31 s-backup-lampo.ansaldisrl.it kernel: [<8015a900>] (cleanup_mnt) from [<8015a9b8>] (__cleanup_mnt+0x1c/0x20)
> mag 11 09:57:32 s-backup-lampo.ansaldisrl.it kernel: [<8015a9b8>] (__cleanup_mnt) from [<8003e6c8>] (task_work_run+0xc0/0xf0)
> mag 11 09:57:32 s-backup-lampo.ansaldisrl.it kernel: [<8003e6c8>] (task_work_run) from [<80012804>] (do_work_pending+0xd8/0xdc)
> mag 11 09:57:32 s-backup-lampo.ansaldisrl.it kernel: [<80012804>] (do_work_pending) from [<8000eb18>] (work_pending+0xc/0x20)
> mag 11 09:57:43 s-backup-lampo.ansaldisrl.it sudo[835]: lesca : TTY=pts/2 ; PWD=/home/lesca ; USER=root ; COMMAND=/bin/bash
> mag 11 09:57:43 s-backup-lampo.ansaldisrl.it sudo[835]: pam_unix(sudo-i:session): session opened for user root by lesca(uid=0)
> mag 11 09:57:56 s-backup-lampo.ansaldisrl.it kernel: XFS (sda1): xfs_log_force: error -5 returned.
> mag 11 09:58:26 s-backup-lampo.ansaldisrl.it kernel: XFS (sda1): xfs_log_force: error -5 returned.
> mag 11 09:58:56 s-backup-lampo.ansaldisrl.it kernel: XFS (sda1): xfs_log_force: error -5 returned.

the only solution for get control of USB hd is restart the raspberry 

I have test the USB disk on another PC whit fedora 21 with same kind
backup and work great

Someone have some suggest?

Many thanks for your help.

-- 
Dario Lesca
(inviato dal mio Linux Fedora 21 con Gnome 3.14)