Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

bmap(9) [centos man page]

BMAP(9) 							   The Linux VFS							   BMAP(9)

bmap - find a block number in a file SYNOPSIS
sector_t bmap(struct inode * inode, sector_t block); ARGUMENTS
inode inode of file block block to find DESCRIPTION
Returns the block number on the device holding the inode that is the disk block number for the block of the file requested. That is, asked for block 4 of inode 1 the function will return the disk block relative to the disk start that holds that block of the file. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 BMAP(9)

Check Out this Related Man Page

SETQUOTA(8)						      System Manager's Manual						       SETQUOTA(8)

setquota - set disk quotas SYNOPSIS
setquota [ -rm ] [ -u | -g ] [ -F quotaformat ] name block-softlimit block-hardlimit inode-softlimit inode-hardlimit -a | filesystem... setquota [ -rm ] [ -u | -g ] [ -F quotaformat ] [ -p protoname ] name -a | filesystem... setquota -b [ -rm ] [ -u | -g ] [ -F quotaformat ] -a | filesystem... setquota -t [ -m ] [ -u | -g ] [ -F quotaformat ] block-grace inode-grace -a | filesystem... setquota -T [ -m ] [ -u | -g ] [ -F quotaformat ] name block-grace inode-grace -a | filesystem... DESCRIPTION
setquota is a command line quota editor. The filesystem, user/group name and new quotas for this filesystem can be specified on the com- mand line. Note that if a number is given in the place of a user/group name it is treated as an UID/GID. -r, --remote Edit also remote quota use rpc.rquotad on remote server to set quota. This option is available only if quota tools were compiled with enabled support for setting quotas over RPC. -m, --no-mixed-pathnames Currently, pathnames of NFSv4 mountpoints are sent without leading slash in the path. rpc.rquotad uses this to recognize NFSv4 mounts and properly prepend pseudoroot of NFS filesystem to the path. If you specify this option, setquota will always send paths with a trailing slash. This can be useful for legacy reasons but be aware that quota over RPC will stop working if you are using new rpc.rquotad. -F, --format=quotaformat Perform setting for specified format (ie. don't perform format autodetection). Possible format names are: vfsold (version 1 quota), vfsv0 (version 2 quota), rpc (quota over NFS), xfs (quota on XFS filesystem) -u, --user Set user quotas for named user. This is the default. -g, --group Set group quotas for named group. -p, --prototype=protoname Use quota settings of user or group protoname to set the quota for the named user or group. -b, --batch Read information to set from stdin (input format is name block-softlimit block-hardlimit inode-softlimit inode-hardlimit ). Empty lines and lines starting with # are ignored. -c, --continue-batch If parsing of an input line in batch mode fails, continue with processing the next line. -t, --edit-period Set grace times for users/groups. Times block-grace and inode-grace are specified in seconds. -T, --edit-times Alter times for individual user/group when softlimit is enforced. Times block-grace and inode-grace are specified in seconds or can be string 'unset'. -a, --all Go through all filesystems with quota in /etc/mtab and perform setting. To disable a quota, set the coresponding parameter to 0. To change quotas for several filesystems, invoke once for each filesystem. Only the super-user may edit quotas. FILES
aquota.user or quota file at the filesystem root (version 2 quota, non-XFS filesystems) quota.user or quota file at the filesystem root (version 1 quota, non-XFS filesystems) /etc/mtab mounted filesystem table SEE ALSO
edquota(8), quota(1), quotactl(2), quotacheck(8), quotaon(8), repquota(8) SETQUOTA(8)
Man Page