сканировать файловую систему на предмет использования диска, создавать, проверять и восстанавливать файлы квот (scan a filesystem for disk usage, create, check and repair quota files)
Имя (Name)
quotacheck - scan a filesystem for disk usage, create, check and
repair quota files
Синопсис (Synopsis)
quotacheck
[ -gubcfinvdMmR
] [ -F
quota-format ] -a
| filesystem
Описание (Description)
quotacheck
examines each filesystem, builds a table of current
disk usage, and compares this table against that recorded in the
disk quota file for the filesystem (this step is omitted if
option -c
is specified). If any inconsistencies are detected,
both the quota file and the current system copy of the incorrect
quotas are updated (the latter only occurs if an active
filesystem is checked which is not advised). By default, only
user quotas are checked. quotacheck
expects each filesystem to
be checked to have quota files named [a]quota.user and
[a]quota.group located at the root of the associated filesystem.
If a file is not present, quotacheck
will create it.
If the quota file is corrupted, quotacheck
tries to save as much
data as possible. Rescuing data may need user intervention. With
no additional options quotacheck
will simply exit in such a
situation. When in interactive mode (option -i
) , the user is
asked for advice. Advice can also be provided from command line
(see option -n
) , which is useful when quotacheck
is run
automatically (ie. from script) and failure is unacceptable.
quotacheck
should be run each time the system boots and mounts
non-valid filesystems. This is most likely to happen after a
system crash.
It is strongly recommended to run quotacheck
with quotas turned
off for the filesystem. Otherwise, possible damage or loss to
data in the quota files can result. It is also unwise to run
quotacheck
on a live filesystem as actual usage may change during
the scan. To prevent this, quotacheck
tries to remount the
filesystem read-only before starting the scan. After the scan is
done it remounts the filesystem read-write. You can disable this
with option -m
. You can also make quotacheck
ignore the failure
to remount the filesystem read-only with option -M
.
Параметры (Options)
-b, --backup
Forces quotacheck
to make backups of the quota file before
writing the new data.
-v, --verbose
quotacheck
reports its operation as it progresses.
Normally it operates silently. If the option is specified
twice, also the current directory is printed (note that
printing can slow down the scan measurably).
-d, --debug
Enable debugging mode. It will result in a lot of
information which can be used in debugging the program.
The output is very verbose and the scan will be slow.
-u, --user
Only user quotas listed in /etc/mtab or on the filesystems
specified are to be checked. This is the default action.
-g, --group
Only group quotas listed in /etc/mtab or on the
filesystems specified are to be checked.
-c, --create-files
Don't read existing quota files. Just perform a new scan
and save it to disk. quotacheck
also skips scanning of
old quota files when they are not found.
-f, --force
Forces checking and writing of new quota files on
filesystems with quotas enabled. This is not recommended
as the created quota files may be out of sync.
-M, --try-remount
This flag forces checking of filesystem in read-write mode
if a remount fails. Do this only when you are sure no
process will write to a filesystem while scanning.
-m, --no-remount
Don't try to remount filesystem read-only. See comment
with option -M
.
-i, --interactive
Interactive mode. By default quotacheck
exits when it
finds an error. In interactive mode user is asked for
input instead. See option -n
.
-n, --use-first-dquot
If the quota files become corrupted, it is possible for
duplicate entries for a single user or group ID to exist.
Normally in this case, quotacheck
exits or asks user for
input. When this option is set, the first entry found is
always used (this option works in interactive mode too).
-F, --format=
format-name
Check and fix quota files of specified format (ie. don't
perform format auto-detection). This is recommended as
detection might not work well on corrupted quota files.
Possible format names are: vfsold
Original quota format
with 16-bit UIDs / GIDs, vfsv0
Quota format with 32-bit
UIDs / GIDs, 64-bit space usage, 32-bit inode usage and
limits, vfsv1
Quota format with 64-bit quota limits and
usage, rpc
(quota over NFS), xfs
(quota on XFS filesystem)
-a, --all
Check all mounted non-NFS filesystems in /etc/mtab
-R, --exclude-root
When used together with the -a
option, all filesystems
except for the root filesystem are checked for quotas.
Примечание (Note)
quotacheck
should only be run by super-user. Non-privileged users
are presumably not allowed to read all the directories on the
given filesystem.
Смотри также (See also)
quota(1), quotactl(2), fstab(5), quotaon(8), repquota(8),
convertquota(8), setquota(8), edquota(8), fsck(8), efsck
(8),
e2fsck(8), xfsck
(8)
Файлы (Files)
aquota.user or aquota.group
located at filesystem root with quotas (version 2 quota,
non-XFS filesystems)
quota.user or quota.group
located at filesystem root with quotas (version 1 quota,
non-XFS filesystems)
/etc/mtab
names and locations of mounted filesystems