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Message-ID: <20131127222345.GB27330@quack.suse.cz> Date: Wed, 27 Nov 2013 23:23:45 +0100 From: Jan Kara <jack@...e.cz> To: Geert Uytterhoeven <geert@...ux-m68k.org> Cc: Theodore Ts'o <tytso@....edu>, linux-ext4@...r.kernel.org, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: CONFIG_EXT4_USE_FOR_EXT23 no space left on device On Wed 27-11-13 16:50:14, Geert Uytterhoeven wrote: > To reduce kernel size, I disabled both CONFIG_EXT2_FS and > CONFIG_EXT3_FS, and enabled CONFIG_EXT4_USE_FOR_EXT23. > > Unfortunately the system behaves badly afterwards. It seems the file system > is considered full: new files can be created, but no data can be written. > Note that the file system is almost full, but root can still write more data > using the real ext3 filesystem driver. > > This is a v3.13-rc1-ish kernel. > > Diff of dmesg and output of a few operations below: Thanks for report. Maybe the easiest would be if you gathered fs metadata using "e2image -r <fs-device>", compressed it and made it available for download. We can then debug ourselves where the accounting goes wrong. Honza > > --- /tmp/good 2013-11-27 16:47:28.000000000 +0100 > +++ /tmp/bad 2013-11-27 16:47:31.000000000 +0100 > @@ -1,11 +1,13 @@ > -kjournald starting. Commit interval 5 seconds > -EXT3-fs (hda1): mounted filesystem with writeback data mode > + > +EXT4-fs (hda1): mounting ext3 file system using the ext4 subsystem > +EXT4-fs (hda1): mounted filesystem with ordered data mode. Opts: (null) > VFS: Mounted root (ext3 filesystem) readonly on device 3:1. > -Freeing unused kernel memory: 152K (0039d000 - 003c3000) > +Freeing unused kernel memory: 152K (0037f000 - 003a5000) > random: nonblocking pool is initialized > Adding 137800k swap on /dev/hda2. Priority:-1 extents:1 across:137800k > -EXT3-fs (hda1): using internal journal > -Unknown key: scancode = 0 ($00), keycode = 'numlock' ($12c) > +EXT4-fs (hda1): re-mounted. Opts: > +EXT4-fs (hda1): re-mounted. Opts: errors=remount-ro > +EXT4-fs (hda1): re-mounted. Opts: > write cmd 0xE0 (STANDBY IMMEDIATE) not supported > hda: task_no_data_intr: status=0x41 { DriveReady Error } > hda: task_no_data_intr: error=0x04 { DriveStatusError } > @@ -22,16 +24,9 @@ hda: possibly failed opcode: 0xe0 > reboot: Power down > > atari:~# mount > -/dev/hda1 on / type ext3 (rw,errors=remount-ro) > -tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755) > -proc on /proc type proc (rw,noexec,nosuid,nodev) > -sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) > -tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev) > -devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620) > -rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw) > -atari:~# cat /proc/mounts > +atari:~# cat /proc/mounts > rootfs / rootfs rw 0 0 > -/dev/root / ext3 rw,relatime,errors=remount-ro,barrier=1,data=writeback 0 0 > +/dev/root / ext3 rw,relatime,errors=remount-ro,data=ordered 0 0 > tmpfs /lib/init/rw tmpfs rw,nosuid,relatime,mode=755 0 0 > proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 > sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 > @@ -40,13 +35,9 @@ devpts /dev/pts devpts rw,nosuid,noexec, > rpc_pipefs /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0 > atari:~# touch /tmp/x > atari:~# echo hello > /tmp/x > -atari:~# cat /tmp/x > -hello > +-bash: echo: write error: No space left on device > atari:~# df -h > -Filesystem Size Used Avail Use% Mounted on > -/dev/hda1 870M 862M 0 100% / > -tmpfs 132M 0 132M 0% /lib/init/rw > -tmpfs 132M 4.0K 132M 1% /dev/shm > +df: cannot read table of mounted file systems > atari:~# ls -l /etc/mtab > --rw-r--r-- 1 root root 331 Nov 27 16:35 /etc/mtab > +-rw-r--r-- 1 root root 0 Oct 27 15:32 /etc/mtab > atari:~# poweroff > > Gr{oetje,eeting}s, > > Geert > > -- > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org > > In personal conversations with technical people, I call myself a hacker. But > when I'm talking to journalists I just say "programmer" or something like that. > -- Linus Torvalds > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Jan Kara <jack@...e.cz> SUSE Labs, CR -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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