Re: Where do I find the definitive man page for mdadm?
On Saturday 13 November 2021 18:37:34 Greg Wooledge wrote:
> On Sat, Nov 13, 2021 at 04:06:43PM -0700, Charles Curley wrote:
> > On Sat, 13 Nov 2021 16:57:01 -0500
> >
> > Gene Heskett <gheskett@shentel.net> wrote:
> > > So which of these various UUID's is actually valid in an fstab
> >
> > Thanks, Andy. This is nice to know about.
> >
> > Gene, the answer is, anythng the TYPE of which is a valid file
> > system. Try, e.g.:
> >
> > blkid | grep -E -i \(ext\|ntfs\|fat\)
>
> lsblk is a lot easier and prettier for this purpose.
>
> unicorn:~$ sudo lsblk -o +UUID
> NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT UUID
> sda 8:0 0 931.5G 0 disk
> ├─sda1 8:1 0 260M 0 part /boot/efi 4C30-7972
> ├─sda2 8:2 0 16M 0 part
> ├─sda3 8:3 0 92.2G 0 part 7294B93794B8FEA3
> ├─sda4 8:4 0 980M 0 part 609E71C79E71966E
> ├─sda5 8:5 0 11.5G 0 part 6858F6A458F66FE4
> ├─sda6 8:6 0 11.2G 0 part [SWAP]
> 08c87bdb-17f4-40ab-9b2f-5cb2f29149fb ├─sda7 8:7 0 23.3G 0 part
> / c4691ccb-2090-491e-8e82-d7cc822db04a ├─sda8 8:8 0
> 23.3G 0 part /home 19fb397b-a113-4536-a03d-d60e176cbfdf └─sda9
> 8:9 0 651.9G 0 part /stuff
> 95058c4a-44e2-4a90-87b5-2a5fe40d3cdb sr0 11:0 1 418.7M 0 rom
Is not me thats confused but both lsblk and blkid spitting out 4 sets of identical UUID's as all drives are identical.
Example:
root@coyote:etc$ lsblk -o +UUID
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT UUID
sda 8:0 0 1.8T 0 disk
├─sda1 8:1 0 953M 0 part /boot 06aa3215-a6a6-4fbb-86ca-186c47e1334c
├─sda2 8:2 0 14.9G 0 part [SWAP] 8b675a91-5aa5-401b-bf50-d8afc3e8115a
├─sda3 8:3 0 46.6G 0 part /var ee491e5c-7394-434f-b50a-f4354f6c9869
├─sda4 8:4 0 1K 0 part
└─sda5 8:5 0 1.8T 0 part / 0e698024-1cf3-4dbc-812d-10552c01caab
sdb 8:16 0 223.6G 0 disk
└─sdb1 8:17 0 223.6G 0 part /sdb 4982ee4c-58c4-4d2b-b9d5-69344c3cb090
sdc 8:32 0 1.8T 0 disk
└─sdc1 8:33 0 1.8T 0 part /amandatapes 3b6848c1-7b09-43be-a7aa-ae63d82f5f26
sde 8:64 0 931.5G 0 disk
├─sde1 8:65 0 878.9G 0 part 3d5a3621-c0e3-2c8a-e3f7-ebb3318edbfb
│ └─md0 9:0 0 1.7T 0 raid10 /home2 708320b3-10af-4c15-b5b1-a9ff7be06d99
└─sde2 8:66 0 48.8G 0 part ddb6ffa2-e068-b701-f316-cc5f83938a13
└─md1 9:1 0 97.6G 0 raid10 /snapshot 733718b2-e7f8-4b00-a390-264e5c73c453
sdf 8:80 0 931.5G 0 disk
├─sdf1 8:81 0 878.9G 0 part 3d5a3621-c0e3-2c8a-e3f7-ebb3318edbfb
│ └─md0 9:0 0 1.7T 0 raid10 /home2 708320b3-10af-4c15-b5b1-a9ff7be06d99
└─sdf2 8:82 0 48.8G 0 part ddb6ffa2-e068-b701-f316-cc5f83938a13
└─md1 9:1 0 97.6G 0 raid10 /snapshot 733718b2-e7f8-4b00-a390-264e5c73c453
sdg 8:96 0 931.5G 0 disk
├─sdg1 8:97 0 878.9G 0 part 3d5a3621-c0e3-2c8a-e3f7-ebb3318edbfb
│ └─md0 9:0 0 1.7T 0 raid10 /home2 708320b3-10af-4c15-b5b1-a9ff7be06d99
└─sdg2 8:98 0 48.8G 0 part ddb6ffa2-e068-b701-f316-cc5f83938a13
└─md1 9:1 0 97.6G 0 raid10 /snapshot 733718b2-e7f8-4b00-a390-264e5c73c453
sdh 8:112 0 931.5G 0 disk
├─sdh1 8:113 0 878.9G 0 part 3d5a3621-c0e3-2c8a-e3f7-ebb3318edbfb
│ └─md0 9:0 0 1.7T 0 raid10 /home2 708320b3-10af-4c15-b5b1-a9ff7be06d99
└─sdh2 8:114 0 48.8G 0 part ddb6ffa2-e068-b701-f316-cc5f83938a13
└─md1 9:1 0 97.6G 0 raid10 /snapshot 733718b2-e7f8-4b00-a390-264e5c73c453
sr0 11:0 1 1024M 0 rom
So we are talking at cross purposes here as this did not answer my question well enough
to make it work on the first try.
I'll use labels, /home2 and /snapshot, thank you.
Cheers, Gene Heskett.
--
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-Ed Howdershelt (Author, 1940)
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- Louis D. Brandeis
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