IFH@204581

MFC of r201700 | mckusick | 2010-01-06

This corrects a bug that manifested itself as identifying the last
cylinder group of a UFS1 filesystem as bad. The error was in the check
and not in the cylind

MFC of r201700 | mckusick | 2010-01-06

This corrects a bug that manifested itself as identifying the last
cylinder group of a UFS1 filesystem as bad. The error was in the check
and not in the cylinder group itself. So even though fsck fixed the
cylinder group correctly, it was still endlessly reported as bad.

This bug first appeared in 8.0 so does not apply to earlier releases.

PR: 141992
Reported by: Dan Strick

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This corrects a bug that manifested itself as identifying the last
cylinder group of a UFS1 filesystem as bad. The error was in the check
and not in the cylinder group itself. So even though fsck fix

This corrects a bug that manifested itself as identifying the last
cylinder group of a UFS1 filesystem as bad. The error was in the check
and not in the cylinder group itself. So even though fsck fixed the
cylinder group correctly, it was still endlessly reported as bad.

PR: 141992
MFC after: 2 weeks
Reported by: Dan Strick

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Merge from head up to r188941 (last revision before the USB stack switch)

Update the projects tree to a newer FreeBSD current.

Update the actions previously attempted by the -D option to make them
robust. With these changes fsck is now able to detect and reliably
rebuild corrupted cylinder group maps. The -D option is no lon

Update the actions previously attempted by the -D option to make them
robust. With these changes fsck is now able to detect and reliably
rebuild corrupted cylinder group maps. The -D option is no longer
necessary as it has been replaced by a prompt asking whether the
corrupted cylinder group should be rebuilt and doing so when requested.
These actions are only offered and taken when running fsck in manual
mode. Corrupted cylinder groups found during preen mode cause the fsck
to fail.

Add the -r option to free up excess unused inodes. Decreasing the
number of preallocated inodes reduces the running time of future
runs of fsck and frees up space that can allocated to files. The -r
option is ignored when running in preen mode.

Reviewed by: Xin LI <delphij@>
Sponsored by: Rsync.net

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Follow up with previous commit: mention -D, not -C when cg check
failed.

Submitted by: obrien

Rename option 'C' to 'D' (damaged) in order to avoid a conflict with upcoming
Juniper 'C' (clean) flag.

Requested by: obrien
MFC after: 1 week

Add a new flag, '-C' which enables a special mode that is intended for
catastrophic recovery. Currently, this mode only validates whether a
cylindergroup has good signature data, and prompts the use

Add a new flag, '-C' which enables a special mode that is intended for
catastrophic recovery. Currently, this mode only validates whether a
cylindergroup has good signature data, and prompts the user to decide
whether to clear it as a whole.

This mode is useful when there is data damage on a disk and you are
working on copy of the original disk, as fsck_ffs(8) tends to abnormally
exit in such case, as a last resort to recover data from the disk.

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Implements gjournal support. If file system has gjournal support enabled
and -p flag was given perform fast file system checking (bascially only
garbage collecting of orphaned objects).

Rename bread

Implements gjournal support. If file system has gjournal support enabled
and -p flag was given perform fast file system checking (bascially only
garbage collecting of orphaned objects).

Rename bread() to blread() and bwrite() to blwrite() as we now link to
the libufs library, which also implement functions with that names.

Sponsored by: home.pl

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Eliminate linked list used to track inodes with an initial link
count of zero and instead encode this information in the inode state.
Pass 4 performed a linear search of this list for each inode in
t

Eliminate linked list used to track inodes with an initial link
count of zero and instead encode this information in the inode state.
Pass 4 performed a linear search of this list for each inode in
the file system, which performs poorly if the list is long.

Reviewed by: sam & keramida (an earlier version of the patch), mckusick
MFC after: 1 month

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Improve the delay algorithm used in bgfsck. From the author:

shuffles the timing and sleep calls in bgfsck from:

sleep timer_on io timer_off io io io io io io io
to
sleep io io io io io io i

Improve the delay algorithm used in bgfsck. From the author:

shuffles the timing and sleep calls in bgfsck from:

sleep timer_on io timer_off io io io io io io io
to
sleep io io io io io io io timer_on io timer_off

The original method basically guaranteed that the timed I/O included a
disk seek every time, which made bgfsck sleep for much longer than
necessary.

Submitted by: Dan Nelson
Reviewed by: kirk

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Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core, imp

Spell "file system" correctly.

Use __FBSDID() to quiet GCC 3.3 warnings.

Slow down the operation of background fsck so as to leave some disk
bandwidth for other processes. Since the sleeping is done from
userland, this avoids the locking issues that affected the kernel
ve

Slow down the operation of background fsck so as to leave some disk
bandwidth for other processes. Since the sleeping is done from
userland, this avoids the locking issues that affected the kernel
version.

The algorithm used here is to measure a moving average of the times
taken by a sample of read operations and then delay 1 in 8 reads
by 16 times the measured average. This should correspond to a factor
of 3 slowdown, but in practice the factor is larger (3.5 to 4) due
to hz rounding effects.

Reviewed by: mckusick
Approved by: re

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Create a new 32-bit fs_flags word in the superblock. Add code to move
the old 8-bit fs_old_flags to the new location the first time that the
filesystem is mounted by a new kernel. One of the unused f

Create a new 32-bit fs_flags word in the superblock. Add code to move
the old 8-bit fs_old_flags to the new location the first time that the
filesystem is mounted by a new kernel. One of the unused flags in
fs_old_flags is used to indicate that the flags have been moved.
Leave the fs_old_flags word intact so that it will work properly if
used on an old kernel.

Change the fs_sblockloc superblock location field to be in units
of bytes instead of in units of filesystem fragments. The old units
did not work properly when the fragment size exceeeded the superblock
size (8192). Update old fs_sblockloc values at the same time that
the flags are moved.

Suggested by: BOUWSMA Barry <freebsd-misuser@netscum.dyndns.dk>
Sponsored by: DARPA & NAI Labs.

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Clear the pending counts in the superblock after a successful run
of fsck so that the kernel does not complain about them being
non-zero when the filesystem is mounted.

Sponsored by: DARPA & NAI Lab

Clear the pending counts in the superblock after a successful run
of fsck so that the kernel does not complain about them being
non-zero when the filesystem is mounted.

Sponsored by: DARPA & NAI Labs.

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s/filesystem/file system/g as discussed on -developers

Fix a bunch of format string warnings which broke
the sparc64 build.

Tested on: sparc64, i386

Warning cleanup.

Format changes by peter

This commit adds basic support for the UFS2 filesystem. The UFS2
filesystem expands the inode to 256 bytes to make space for 64-bit
block pointers. It also adds a file-creation time field, an ability

This commit adds basic support for the UFS2 filesystem. The UFS2
filesystem expands the inode to 256 bytes to make space for 64-bit
block pointers. It also adds a file-creation time field, an ability
to use jumbo blocks per inode to allow extent like pointer density,
and space for extended attributes (up to twice the filesystem block
size worth of attributes, e.g., on a 16K filesystem, there is space
for 32K of attributes). UFS2 fully supports and runs existing UFS1
filesystems. New filesystems built using newfs can be built in either
UFS1 or UFS2 format using the -O option. In this commit UFS1 is
the default format, so if you want to build UFS2 format filesystems,
you must specify -O 2. This default will be changed to UFS2 when
UFS2 proves itself to be stable. In this commit the boot code for
reading UFS2 filesystems is not compiled (see /sys/boot/common/ufsread.c)
as there is insufficient space in the boot block. Once the size of the
boot block is increased, this code can be defined.

Things to note: the definition of SBSIZE has changed to SBLOCKSIZE.
The header file <ufs/ufs/dinode.h> must be included before
<ufs/ffs/fs.h> so as to get the definitions of ufs2_daddr_t and
ufs_lbn_t.

Still TODO:
Verify that the first level bootstraps work for all the architectures.
Convert the utility ffsinfo to understand UFS2 and test growfs.
Add support for the extended attribute storage. Update soft updates
to ensure integrity of extended attribute storage. Switch the
current extended attribute interfaces to use the extended attribute
storage. Add the extent like functionality (framework is there,
but is currently never used).

Sponsored by: DARPA & NAI Labs.
Reviewed by: Poul-Henning Kamp <phk@freebsd.org>

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UFS2 preparation commit:
Remove support for converting old FFS formats to newer.

Submitted by: mckusick
Sponspored by: DARPA & NAI Labs.

Retire the bogus uses of the disklabel field d_sbsize and begin to
initialize it to zero so we don't have to have everbody and their
aunt including FFS specific header files.

Sponsored by: DARPA & N

Retire the bogus uses of the disklabel field d_sbsize and begin to
initialize it to zero so we don't have to have everbody and their
aunt including FFS specific header files.

Sponsored by: DARPA & NAI Labs.

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Minor bug fixes uncovered while working on UFS2.
They should have no effect on existing systems.