Term
| CD and DVD file system ISO number |
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Definition
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Term
| command to make a file system |
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Definition
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Term
| make an ext3 filesystem on sdb1 |
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Definition
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Term
| make an ext3 filesystem on lvol1 in VolGroup01 |
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Definition
| mkfs -t ext3 /dev/VolGroup01/lvol1 |
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Term
| add a journal to the ext2 file system on sdb1 |
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Definition
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Term
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Definition
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Term
| show all the currently mounted file systems |
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Definition
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Term
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Definition
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Term
| you tried umount /data1 but it says it is busy, what now |
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Definition
use fuser with the -cu option for -c processid and -u username:
fuser -cu /data1
or
lsof /data1 |
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Term
| kill all the processes that are using /data1 so you can umount it |
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Definition
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Term
| unmount all the filesystem exect for those that can't be unmounted |
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Definition
umount -a
/var, /usr, and / can't be unmounted |
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Term
| resize the sdb1 filesystem to 1000MB currently mounted on data1 |
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Definition
umount /data1
resize2fs /dev/sdb1 1000M |
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Term
| how does a filesystem mount on boot |
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Definition
| The lines in /etc/fstab mount a filesystem on boot |
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Term
| you have added two filesystems in /etc/fstab . mount everything in /etc/fstab |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| add rw options for file1 for user2 |
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Definition
| setfacl -m u:user4:rw file1 |
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Term
| see if acl is enabled on sdb1 |
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Definition
| tune2fs -l /dev/sdb1 | grep acl |
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Term
| delete all the acl entries for file1 |
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Definition
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Term
| set the acl for file2 to have user rwx, group rw, and others r, also add rwx for user3, use octal notation |
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Definition
| setfacl -m u::7,g::6,o:4,u:user3:7 file2 |
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Term
| set the default acl on the /home/user3/project directory giving both user1 and user2 rw |
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Definition
| set -m d:u:user1:6,d:u:user2:6 /home/user3/project |
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Term
| what is the point of setting the default ACL |
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Definition
| it is set on a directory so that all the files and sub-directories automatically are created with those acl permissions |
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Term
| confirm that Disk quota is turned on |
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Definition
| grep CONFIG_QUOTA /boot/config-`uname -r` |
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Term
| what is a disk quota soft limit |
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Definition
| an upper level threshhold. If a grace period is set a user must remove files within a time period set for further use |
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Term
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Definition
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Term
| determine if the quota package is installed on your computer |
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Definition
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Term
| check the mount status to determine if quota is supported on /home |
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Definition
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Term
| remount /home with quota support enabled for the user and group levels |
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Definition
| mount -o remount,acl,usrquota,grpquota /home |
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Term
| confirm that /home is mounted with quota support enabled |
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Definition
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Term
| check the quotas for users and groups for /home |
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Definition
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Term
| you have run "quotacheck -cgmuv /home" but your get errors about old group files, why |
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Definition
| quotacheck creates two files when it is first run, aquota.user and aquota.group. Once created you will not see the errors again. |
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Term
| quotacheck /home for user and group quota information |
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Definition
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Term
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Definition
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Term
| modify the user quota information for user user2 |
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Definition
edquota user2
This uses vi to edit aquota.user |
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Term
| set the quota for the user user2 set a soft limit of 300MB and a hard limit of 350MB on the file system /home |
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Definition
| setquota -u user2 300000 350000 0 0 /home |
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Term
| edit the group quota for the dba group |
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Definition
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Term
| set the group quota for the dba group. Set a soft limit of 2GB and a hard limit of 2.2GB on the file system /home |
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Definition
| setquota -g dba 2000000 2200000 0 0 /home |
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Term
| look at the grace period for the soft limit |
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Definition
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Term
| modify the grace period for the user user2 |
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Definition
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Term
| copy the user quota settings from user2 to user4 and user5 |
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Definition
| edquota -up user2 user4 user5 |
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Term
| activate the disk quota for groups and users when the system is rebooted when needs to be changed |
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Definition
/etc/fstab
for users and groups it needs the following options added to the appropriate line:
acl,usrquota,grpquota |
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Term
| view a quota report for users |
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Definition
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Term
| view a quota report for groups |
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Definition
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Term
| check the user quota on /home |
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Definition
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Term
| view the quota report for user2 |
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Definition
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Term
| you are logged in as a user, take a look at your quota usage |
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Definition
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Term
| Turn off the quota for all users and groups |
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Definition
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Term
| turn off the quota for all users and groups on the file system /home |
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Definition
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Term
| check the filesystem /data1 which is a mount of /dev/VolGroup01/lvol0 |
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Definition
umount /data1
fsck /dev/VolGroup01/lvol0 |
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Term
| run a file system check and automatically repair any errors |
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Definition
| fsck -p /dev/VolGroup01/lvol0 |
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Term
| The primary superblock is missing or corrupted on the /dev/sdc1 file system, fix this |
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Definition
dumpe2fs /dev/sdc1
find the backup superblock location (ex: 32768)
fsck -b 32768 /dev/sdc1
-repair the primary superblock |
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Term
| see how much space is free on each file system |
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Definition
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Term
| see how much space is free in MB on each file system |
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Definition
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Term
| Files have been recovered and placed in the lost+found directory, how can you find the original name |
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Definition
| cat the file, or use strings to find some legible information in the file. |
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Term
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Definition
mkdir /usb0
mount -t vfat /dev/sdf /usb0 |
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Term
| look at the free space, make it easy to read |
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Definition
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Term
| find out how much disk space /home/user2 is using |
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Definition
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Term
| find out how much swap space is in use |
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Definition
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Term
| show the memory information on a system |
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Definition
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Term
| create a logical volume named swapvol in VolGroup01 with a size of 2000MB |
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Definition
| lvcreate -L 2000 -n swapvol VolGroup01 |
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Term
| create the swap structures in /dev/VolGroup01/swapvol |
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Definition
| mkswap /dev/VolGroup01/swapvol |
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Term
| you have a volume swapvol that has already been created with mkswap. Use it for swap space |
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Definition
| swapon /dev/VolGroup01/swapvol |
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Term
| confirm that the system is using your newly enable swap volume |
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Definition
cat /proc/swaps
or
swapon -s |
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Term
| look at the virtual memory statistics |
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Definition
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Term
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Definition
device swap and file system swap
device swap is primary and file system swap should always be defined as secondary |
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Term
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Definition
| Setting up such file system swap space allows for extra swap if there is occasional need for more than the allocated device swap space. It is used only when device swap space is insufficient. |
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Term
| reserve 200MB of contiguous swap space in /data2 |
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Definition
dd if=/dev/zero /of=dat2/fs_swap1 bs=1024 count=204800
This creates the file "fs_swap1" |
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Term
| You have contiguous file that you created with dd, /data2/fs_swap1, turn it into swap space |
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Definition
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Term
| turn on the file system swap space /data2/fs_swap1 |
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Definition
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Term
| enable swap space at system boot |
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Definition
edit fstab with a line like this:
/dev/VolGroup01/swapvol swap swap defaults 0 0 |
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Term
| list some swap best practices |
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Definition
<=1 swap space per disk
favor faster disks over slower
two small swaps on different disks faster than one large swap
Avoid file sysstem swap |
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