how to identify UUID conf or ordinary dev conf from fstab
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up vote
1
down vote
favorite
we need to add disks on more then 100 redhat machines,
therefore we need to update also the /etc/fstab on each machine
the problem is that some machines configured with UUID and other with ordinary dev in fstab
so I want to make a bash script that will identify the fstab configuration as the following
- in case fstab configured with UUID add new UUID lines for each additional disk
- in case fstab configured with ordinary dev then add new dev lines for each additional disk
so my question is - what is the best approach to identify what configured in fstab UUID or ordinary dev ?
remark - not include the OS , we talk here only on additional disks in HW machines
here is example of linux machine with UUID conf in fstab
/dev/mapper/vg00-loov_root / xfs defaults 00
UUID=7de1dc5c-b605-4a6f-bdf1-f1e869f6ffb9 /boot xfs
defaults 0 0
/dev/mapper/vg00-loov_var /var xfs defaults 00
/dev/mapper/vg00-loov_swap swap swap defaults 00
UUID="fcb73644-4ad3-4b19-85f8-dbb9ed53a871" /data/sdb
ext4 defaults,noatime 0 0
UUID="5f56c1d6-266f-4ea2-a8f7-df06f08e01c0" /data/sdc
ext4 defaults,noatime 0 0
UUID="4c908671-4045-41e8-a396-a5198978e3ac" /data/sdd
ext4 defaults,noatime 0 0
UUID="d44fe62a-72dc-4674-91ac-5a1962797e22" /data/sde
ext4 defaults,noatime 0 0
UUID="ee3d8fa8-e000-4abb-a26c-da99499e630c" /data/sdf
ext4 defaults,noatime 0 0
UUID="61e9e16f-eb49-4c97-aaf0-0ed2dc3f3007" /data/sdg
ext4 defaults,noatime 0 0
UUID="ada12394-0e0b-4657-a148-d85548d7bc75" /data/sdh
ext4 defaults,noatime 0 0
shell-script fstab uuid
asked Jan 3 at 23:55
yael
2,0091145
add a comment |Â
up vote
1
down vote
favorite
we need to add disks on more then 100 redhat machines,
therefore we need to update also the /etc/fstab on each machine
the problem is that some machines configured with UUID and other with ordinary dev in fstab
so I want to make a bash script that will identify the fstab configuration as the following
- in case fstab configured with UUID add new UUID lines for each additional disk
- in case fstab configured with ordinary dev then add new dev lines for each additional disk
so my question is - what is the best approach to identify what configured in fstab UUID or ordinary dev ?
remark - not include the OS , we talk here only on additional disks in HW machines
here is example of linux machine with UUID conf in fstab
/dev/mapper/vg00-loov_root / xfs defaults 00
UUID=7de1dc5c-b605-4a6f-bdf1-f1e869f6ffb9 /boot xfs
defaults 0 0
/dev/mapper/vg00-loov_var /var xfs defaults 00
/dev/mapper/vg00-loov_swap swap swap defaults 00
UUID="fcb73644-4ad3-4b19-85f8-dbb9ed53a871" /data/sdb
ext4 defaults,noatime 0 0
UUID="5f56c1d6-266f-4ea2-a8f7-df06f08e01c0" /data/sdc
ext4 defaults,noatime 0 0
UUID="4c908671-4045-41e8-a396-a5198978e3ac" /data/sdd
ext4 defaults,noatime 0 0
UUID="d44fe62a-72dc-4674-91ac-5a1962797e22" /data/sde
ext4 defaults,noatime 0 0
UUID="ee3d8fa8-e000-4abb-a26c-da99499e630c" /data/sdf
ext4 defaults,noatime 0 0
UUID="61e9e16f-eb49-4c97-aaf0-0ed2dc3f3007" /data/sdg
ext4 defaults,noatime 0 0
UUID="ada12394-0e0b-4657-a148-d85548d7bc75" /data/sdh
ext4 defaults,noatime 0 0
shell-script fstab uuid
asked Jan 3 at 23:55
yael
2,0091145
Why is it a problem that some systems do not use UUIDs yet? Is that anyhow an argument against UUIDs for the new disks?
– Hauke Laging
Jan 4 at 0:22
3
If you already have 100 machines that have inconsistent configuration styles then you have a bigger problem to solve first. You need to look into using something like puppet or ansible
– cas
Jan 4 at 1:58
what we want is to do the same conf on fstab I mean that if machine have UUID then need to insert UUID lines if machine have ordinary dev lines then need to insert DEV ordinary lines to fstan , all this to avoid mishmash on fstab file , it will not be good if fstab file will include both configuration isnt it?
– yael
Jan 4 at 5:47
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
we need to add disks on more then 100 redhat machines,
therefore we need to update also the /etc/fstab on each machine
the problem is that some machines configured with UUID and other with ordinary dev in fstab
so I want to make a bash script that will identify the fstab configuration as the following
- in case fstab configured with UUID add new UUID lines for each additional disk
- in case fstab configured with ordinary dev then add new dev lines for each additional disk
so my question is - what is the best approach to identify what configured in fstab UUID or ordinary dev ?
remark - not include the OS , we talk here only on additional disks in HW machines
here is example of linux machine with UUID conf in fstab
/dev/mapper/vg00-loov_root / xfs defaults 00
UUID=7de1dc5c-b605-4a6f-bdf1-f1e869f6ffb9 /boot xfs
defaults 0 0
/dev/mapper/vg00-loov_var /var xfs defaults 00
/dev/mapper/vg00-loov_swap swap swap defaults 00
UUID="fcb73644-4ad3-4b19-85f8-dbb9ed53a871" /data/sdb
ext4 defaults,noatime 0 0
UUID="5f56c1d6-266f-4ea2-a8f7-df06f08e01c0" /data/sdc
ext4 defaults,noatime 0 0
UUID="4c908671-4045-41e8-a396-a5198978e3ac" /data/sdd
ext4 defaults,noatime 0 0
UUID="d44fe62a-72dc-4674-91ac-5a1962797e22" /data/sde
ext4 defaults,noatime 0 0
UUID="ee3d8fa8-e000-4abb-a26c-da99499e630c" /data/sdf
ext4 defaults,noatime 0 0
UUID="61e9e16f-eb49-4c97-aaf0-0ed2dc3f3007" /data/sdg
ext4 defaults,noatime 0 0
UUID="ada12394-0e0b-4657-a148-d85548d7bc75" /data/sdh
ext4 defaults,noatime 0 0
shell-script fstab uuid
asked Jan 3 at 23:55
yael
2,0091145
we need to add disks on more then 100 redhat machines,
therefore we need to update also the /etc/fstab on each machine
the problem is that some machines configured with UUID and other with ordinary dev in fstab
so I want to make a bash script that will identify the fstab configuration as the following
- in case fstab configured with UUID add new UUID lines for each additional disk
- in case fstab configured with ordinary dev then add new dev lines for each additional disk
so my question is - what is the best approach to identify what configured in fstab UUID or ordinary dev ?
remark - not include the OS , we talk here only on additional disks in HW machines
here is example of linux machine with UUID conf in fstab
/dev/mapper/vg00-loov_root / xfs defaults 00
UUID=7de1dc5c-b605-4a6f-bdf1-f1e869f6ffb9 /boot xfs
defaults 0 0
/dev/mapper/vg00-loov_var /var xfs defaults 00
/dev/mapper/vg00-loov_swap swap swap defaults 00
UUID="fcb73644-4ad3-4b19-85f8-dbb9ed53a871" /data/sdb
ext4 defaults,noatime 0 0
UUID="5f56c1d6-266f-4ea2-a8f7-df06f08e01c0" /data/sdc
ext4 defaults,noatime 0 0
UUID="4c908671-4045-41e8-a396-a5198978e3ac" /data/sdd
ext4 defaults,noatime 0 0
UUID="d44fe62a-72dc-4674-91ac-5a1962797e22" /data/sde
ext4 defaults,noatime 0 0
UUID="ee3d8fa8-e000-4abb-a26c-da99499e630c" /data/sdf
ext4 defaults,noatime 0 0
UUID="61e9e16f-eb49-4c97-aaf0-0ed2dc3f3007" /data/sdg
ext4 defaults,noatime 0 0
UUID="ada12394-0e0b-4657-a148-d85548d7bc75" /data/sdh
ext4 defaults,noatime 0 0
shell-script fstab uuid
asked Jan 3 at 23:55
yael
2,0091145
edited Jan 4 at 8:32
asked Jan 3 at 23:55
yael
2,0091145
asked Jan 3 at 23:55
yael
2,0091145
asked Jan 3 at 23:55
yael
2,0091145
2,0091145
Why is it a problem that some systems do not use UUIDs yet? Is that anyhow an argument against UUIDs for the new disks?
– Hauke Laging
Jan 4 at 0:22
3
If you already have 100 machines that have inconsistent configuration styles then you have a bigger problem to solve first. You need to look into using something like puppet or ansible
– cas
Jan 4 at 1:58
what we want is to do the same conf on fstab I mean that if machine have UUID then need to insert UUID lines if machine have ordinary dev lines then need to insert DEV ordinary lines to fstan , all this to avoid mishmash on fstab file , it will not be good if fstab file will include both configuration isnt it?
– yael
Jan 4 at 5:47
add a comment |Â
Why is it a problem that some systems do not use UUIDs yet? Is that anyhow an argument against UUIDs for the new disks?
– Hauke Laging
Jan 4 at 0:22
3
If you already have 100 machines that have inconsistent configuration styles then you have a bigger problem to solve first. You need to look into using something like puppet or ansible
– cas
Jan 4 at 1:58
what we want is to do the same conf on fstab I mean that if machine have UUID then need to insert UUID lines if machine have ordinary dev lines then need to insert DEV ordinary lines to fstan , all this to avoid mishmash on fstab file , it will not be good if fstab file will include both configuration isnt it?
– yael
Jan 4 at 5:47
Why is it a problem that some systems do not use UUIDs yet? Is that anyhow an argument against UUIDs for the new disks?
– Hauke Laging
Jan 4 at 0:22
Why is it a problem that some systems do not use UUIDs yet? Is that anyhow an argument against UUIDs for the new disks?
– Hauke Laging
Jan 4 at 0:22
3
3
If you already have 100 machines that have inconsistent configuration styles then you have a bigger problem to solve first. You need to look into using something like puppet or ansible
– cas
Jan 4 at 1:58
If you already have 100 machines that have inconsistent configuration styles then you have a bigger problem to solve first. You need to look into using something like puppet or ansible
– cas
Jan 4 at 1:58
what we want is to do the same conf on fstab I mean that if machine have UUID then need to insert UUID lines if machine have ordinary dev lines then need to insert DEV ordinary lines to fstan , all this to avoid mishmash on fstab file , it will not be good if fstab file will include both configuration isnt it?
– yael
Jan 4 at 5:47
what we want is to do the same conf on fstab I mean that if machine have UUID then need to insert UUID lines if machine have ordinary dev lines then need to insert DEV ordinary lines to fstan , all this to avoid mishmash on fstab file , it will not be good if fstab file will include both configuration isnt it?
– yael
Jan 4 at 5:47
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
0
down vote
accepted
You may have to define more precisely what counts as UUID configuration.
If it is enough that a single volume is mounted via UUID then you can simply use
if grep -q '^s*UUID=' /etc/fstab; then
:
else
:
fi
answered Jan 4 at 0:27
Hauke Laging
53.5k1282130
not good , because in some linux machines the disk sda ( OS ) is with UUID , while other disks in machine are isn't
– yael
Jan 4 at 5:50
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
You may have to define more precisely what counts as UUID configuration.
If it is enough that a single volume is mounted via UUID then you can simply use
if grep -q '^s*UUID=' /etc/fstab; then
:
else
:
fi
answered Jan 4 at 0:27
Hauke Laging
53.5k1282130
not good , because in some linux machines the disk sda ( OS ) is with UUID , while other disks in machine are isn't
– yael
Jan 4 at 5:50
add a comment |Â
up vote
0
down vote
accepted
You may have to define more precisely what counts as UUID configuration.
If it is enough that a single volume is mounted via UUID then you can simply use
if grep -q '^s*UUID=' /etc/fstab; then
:
else
:
fi
answered Jan 4 at 0:27
Hauke Laging
53.5k1282130
not good , because in some linux machines the disk sda ( OS ) is with UUID , while other disks in machine are isn't
– yael
Jan 4 at 5:50
add a comment |Â
up vote
0
down vote
accepted
up vote
0
down vote
accepted
You may have to define more precisely what counts as UUID configuration.
If it is enough that a single volume is mounted via UUID then you can simply use
if grep -q '^s*UUID=' /etc/fstab; then
:
else
:
fi
answered Jan 4 at 0:27
Hauke Laging
53.5k1282130
You may have to define more precisely what counts as UUID configuration.
If it is enough that a single volume is mounted via UUID then you can simply use
if grep -q '^s*UUID=' /etc/fstab; then
:
else
:
fi
answered Jan 4 at 0:27
Hauke Laging
53.5k1282130
answered Jan 4 at 0:27
Hauke Laging
53.5k1282130
answered Jan 4 at 0:27
Hauke Laging
53.5k1282130
answered Jan 4 at 0:27
Hauke Laging
53.5k1282130
53.5k1282130
not good , because in some linux machines the disk sda ( OS ) is with UUID , while other disks in machine are isn't
– yael
Jan 4 at 5:50
add a comment |Â
not good , because in some linux machines the disk sda ( OS ) is with UUID , while other disks in machine are isn't
– yael
Jan 4 at 5:50
not good , because in some linux machines the disk sda ( OS ) is with UUID , while other disks in machine are isn't
– yael
Jan 4 at 5:50
not good , because in some linux machines the disk sda ( OS ) is with UUID , while other disks in machine are isn't
– yael
Jan 4 at 5:50
add a comment |Â
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Why is it a problem that some systems do not use UUIDs yet? Is that anyhow an argument against UUIDs for the new disks?
– Hauke Laging
Jan 4 at 0:22
3
If you already have 100 machines that have inconsistent configuration styles then you have a bigger problem to solve first. You need to look into using something like puppet or ansible
– cas
Jan 4 at 1:58
what we want is to do the same conf on fstab I mean that if machine have UUID then need to insert UUID lines if machine have ordinary dev lines then need to insert DEV ordinary lines to fstan , all this to avoid mishmash on fstab file , it will not be good if fstab file will include both configuration isnt it?
– yael
Jan 4 at 5:47