Questions tagged [libblkid]

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blkid doesn't doesn't print the device name on CentOS

I am running a container with CentOS: docker run -it centos bash I first check for its Label or UUID: [root@3271c071fe0a /]# cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-5.3.0-1032-aws root=LABEL=...
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1answer
49 views

How ID_PART_ENTRY_UUID is computed in GPT?

How the tag ID_PART_ENTRY_UUID is computed? Can I get ID_PART_TABLE_UUID from ID_PART_ENTRY_UUID? I have a disk with GPT partition table and some partitions. I need to identify which partitions are ...
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1answer
32 views

On `blkid`'s `-O` option

I was investigating blkid options and have trouble understanding the -O option. user@host :~ $ > blkid --help | grep -E -- '-O' -O, --offset <offset> probe at the given offset What is ...
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libblkid1 and libmount1 have unmet dependencies

I'm trying to run apt-get dist-upgrade to upgrade from Debian Wheezy to Jessie but I get following error: The following packages have unmet dependencies: mount : PreDepends: libblkid1 (>= 2.20.1) ...
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93 views

Disk doesn't appear in blkid but does appear in lsblk

When we do the following on a RHEL lab machine: lsblk | grep sdd sdd 8:48 0 1.8T 0 disk we get the sdd disk, but when we do blkid as the following: blkid | grep sdd we do not ...
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3answers
347 views

What triggers disk's UUID to change?

On the same model of industrial PCs, I see UUID of the main SSD changed. Those 2 IPCs are restored from 2 similar but different Linux disk images. Question is as per the title. UUID of the main disk /...
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2answers
2k views

How can I get my drive mounting via fstab again?

I had a nice Ubuntu 18.04 system up and running with many different internal SATA drives and rock solid for several months, and all were happy in the land. Then one day, there was a simple power ...
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58 views

Why the partx cannot output the debug info with LIBBLKID_DEBUG enabled ?

We have run the partx with LIBBLKID_DEBUG enabled on many RHEL/CentOS, but all output without their corresponding debug details! # # # LIBBLKID_DEBUG=0xffff partx /dev/cciss/c0d0 # 1: 63- ...
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1answer
232 views

blkid returns more information than expected

I'm following a recipe I created a couple of years ago, where at one point I need to use blkid to obtain a filesystem UUID. I have this command noted, along with an expected example return value: ...
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219 views

RAID1 `mdX` looks O.K. on `/proc/mdstat`, but `blkid` and `fdisk -l` of the members report whacky/faulty values

I created a RAID1 with mdadm --create /dev/mdX --level=mirror --raid-devices=2 /dev/sdb /dev/sdc Then watched the first sync on /proc/mdstat. It says [UU]. So far so good. sd[bc] were supposed to ...
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1answer
300 views

Where is struct blkid_struct_dev defined?

blkid.h typedefs as follows: typedef struct blkid_struct_dev *blkid_dev; That is the only appearance of the token blkid_struct_dev in blkid.h. grep -rl blkid_struct_dev /usr/include returns only /...