BMC/Intel-BMC/linux.git/fs/ubifs/sb.c, branch dev

UBIFS: extend debug/message capabilities

2015-03-25T09:08:41+00:00

In the case where we have more than one volumes on different UBI devices, it may be not that easy to tell which volume prints the messages. Add ubi number and volume id in ubifs_msg/warn/error to help debug. These two values are passed by struct ubifs_info. For those where ubifs_info is not initialized yet, ubifs_* is replaced by pr_*. For those where ubifs_info is not avaliable, ubifs_info is passed to the calling function as a const parameter. The output looks like, [ 95.444879] UBIFS (ubi0:1): background thread "ubifs_bgt0_1" started, PID 696 [ 95.484688] UBIFS (ubi0:1): UBIFS: mounted UBI device 0, volume 1, name "test1" [ 95.484694] UBIFS (ubi0:1): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes [ 95.484699] UBIFS (ubi0:1): FS size: 30220288 bytes (28 MiB, 238 LEBs), journal size 1523712 bytes (1 MiB, 12 LEBs) [ 95.484703] UBIFS (ubi0:1): reserved for root: 1427378 bytes (1393 KiB) [ 95.484709] UBIFS (ubi0:1): media format: w4/r0 (latest is w4/r0), UUID 40DFFC0E-70BE-4193-8905-F7D6DFE60B17, small LPT model [ 95.489875] UBIFS (ubi1:0): background thread "ubifs_bgt1_0" started, PID 699 [ 95.529713] UBIFS (ubi1:0): UBIFS: mounted UBI device 1, volume 0, name "test2" [ 95.529718] UBIFS (ubi1:0): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes [ 95.529724] UBIFS (ubi1:0): FS size: 19808256 bytes (18 MiB, 156 LEBs), journal size 1015809 bytes (0 MiB, 8 LEBs) [ 95.529727] UBIFS (ubi1:0): reserved for root: 935592 bytes (913 KiB) [ 95.529733] UBIFS (ubi1:0): media format: w4/r0 (latest is w4/r0), UUID EEB7779D-F419-4CA9-811B-831CAC7233D4, small LPT model [ 954.264767] UBIFS error (ubi1:0 pid 756): ubifs_read_node: bad node type (255 but expected 6) [ 954.367030] UBIFS error (ubi1:0 pid 756): ubifs_read_node: bad node at LEB 0:0, LEB mapping status 1 Signed-off-by: Sheng Yong Signed-off-by: Artem Bityutskiy

UBIFS: fix error path in create_default_filesystem()

2014-07-19T06:53:52+00:00

In the end of 'create_default_filesystem()' we need to check the return value of 'ubifs_write_node()' to ensure that we have successfully written the 'cs_node'. Signed-off-by: hujianyang Signed-off-by: Artem Bityutskiy

UBIFS: remove useless statements

2014-07-19T06:53:51+00:00

This patch removes useless and duplicate statements. Signed-off-by: hujianyang Signed-off-by: Artem Bityutskiy

Merge tag 'upstream-3.7-rc1' of git://git.infradead.org/linux-ubifs

2012-10-03T03:47:48+00:00

Pull ubifs changes from Artem Bityutskiy: "No big changes for 3.7 in UBIFS: - Error reporting and debug printing improvements - Power cut emulation fixes - Minor cleanups" Fix trivial conflict in fs/ubifs/debug.c due to the user namespace changes. * tag 'upstream-3.7-rc1' of git://git.infradead.org/linux-ubifs: UBIFS: print less UBIFS: use pr_ helper instead of printk UBIFS: comply with coding style UBIFS: use __aligned() attribute UBIFS: remove __DATE__ and __TIME__ UBIFS: fix power cut emulation for mtdram UBIFS: improve scanning debug output UBIFS: always print full error reports UBIFS: print PID in debug messages

userns: Convert ubifs to use kuid/kgid

2012-09-21T10:13:36+00:00

Cc: Artem Bityutskiy Cc: Adrian Hunter Acked-by: Serge Hallyn Signed-off-by: Eric W. Biederman

UBIFS: comply with coding style

2012-08-31T14:32:57+00:00

Join all the split printk lines in order to stop checkpatch complaining. Signed-off-by: Artem Bityutskiy

UBIFS: fix a bug in empty space fix-up

2012-07-20T07:13:27+00:00

UBIFS has a feature called "empty space fix-up" which is a quirk to work-around limitations of dumb flasher programs. Namely, of those flashers that are unable to skip NAND pages full of 0xFFs while flashing, resulting in empty space at the end of half-filled eraseblocks to be unusable for UBIFS. This feature is relatively new (introduced in v3.0). The fix-up routine (fixup_free_space()) is executed only once at the very first mount if the superblock has the 'space_fixup' flag set (can be done with -F option of mkfs.ubifs). It basically reads all the UBIFS data and metadata and writes it back to the same LEB. The routine assumes the image is pristine and does not have anything in the journal. There was a bug in 'fixup_free_space()' where it fixed up the log incorrectly. All but one LEB of the log of a pristine file-system are empty. And one contains just a commit start node. And 'fixup_free_space()' just unmapped this LEB, which resulted in wiping the commit start node. As a result, some users were unable to mount the file-system next time with the following symptom: UBIFS error (pid 1): replay_log_leb: first log node at LEB 3:0 is not CS node UBIFS error (pid 1): replay_log_leb: log error detected while replaying the log at LEB 3:0 The root-cause of this bug was that 'fixup_free_space()' wrongly assumed that the beginning of empty space in the log head (c->lhead_offs) was known on mount. However, it is not the case - it was always 0. UBIFS does not store in it the master node and finds out by scanning the log on every mount. The fix is simple - just pass commit start node size instead of 0 to 'fixup_leb()'. Signed-off-by: Artem Bityutskiy Cc: stable@vger.kernel.org [v3.0+] Reported-by: Iwo Mergler Tested-by: Iwo Mergler Reported-by: James Nute

UBI: Kill data type hint

2012-05-20T17:25:59+00:00

We do not need this feature and to our shame it even was not working and there was a bug found very recently. -- Artem Bityutskiy Without the data type hint UBI2 (fastmap) will be easier to implement. Signed-off-by: Richard Weinberger Signed-off-by: Artem Bityutskiy

UBIFS: remove Kconfig debugging option

2012-05-16T16:53:46+00:00

Have the debugging stuff always compiled-in instead. It simplifies maintanance a lot. Signed-off-by: Artem Bityutskiy

UBIFS: rename dumping functions

2012-05-16T16:15:56+00:00

This commit re-names all functions which dump something from "dbg_dump_*()" to "ubifs_dump_*()". This is done for consistency with UBI and because this way it will be more logical once we remove the debugging sompilation option. Signed-off-by: Artem Bityutskiy